 from New York it's SS engineer everybody and welcome to ask engineer it's me lady Ada the engineer with me is Mr. Lady Ada on camera control and also helping out with this show we just got done with show and talent was amazing we'll chat about that in a minute but for the next hour we're gonna be showing off videos and new products and MPIs and guides and some news and videos and gifts and more and it goes on and on so let's kick right into it what's on tonight's show tonight show the code is can feather you can 10% off the need for sorrow away up to 59 p.m. Eastern time or whenever I'm trying to put off anything in stock user to lose it tonight save a buck to and also support a cool open source hard work company 100% women on VC and loan free we're doing this in New York we got some bills we need to pay and some skills that we want to pay people to do too if we're live we just did a bunch of our live shows including show and tell we'll talk about that in just a couple minutes do a little bit of recap from the desk of Lady Ada including if great search which we do every Sunday JP's product pick of the week do a little bit time traveling some retro tech some really retro techs sort of kind well it is now it's a it's an older thing we'll show that off to a little bit of advance manufacturing in New York City some 3d printing we got Ion MPI top secret new products when it's your questions you do that discord data for a T slash discord so we answer all the questions because we got a bunch of streaming going on it makes it easy for us to find it there all that and more on you guessed it ask an engineer yay okay so let's pay some bills coats can feather what do folks get as they add stuff to their car I'm glad you asked we still have some freebies we've got $99 or more the promo proto half-size breadboard great for ticking your breadboard project and making it permanent they'll do this for a little bit longer and I'm gonna probably change out to some other freebie but for now so we got 149 or more you got the KB 2040 but now it's an eight of a black we had the pink version for quite a bit but we wanted to get back to our roots so it's back to black as somebody say in 199 or more we have free UPS ground shipping in the Continental United States and we don't have any circuit programs so there's no other that's it for now but as soon you get more circuit programs we'll add the 299 freebie back okay we do a bunch of live shows including show and tell which we just did right now lots of cool stuff this week J stop by from ditch key new glasses and stop by with the floppy jewelry project you learn how to make we'll talk about that on the learn yeah yeah also last week we because we were on dual duty I didn't get through all the guides we're gonna do a little bit longer guide yeah cuz we didn't do this the video synth guy Scott came by working on a lot of cool new stuff I totally heard said him he's like I don't know to work on them like I got some yeah he's like oh no I'm JP showed up since stuff jeep was off an older project Pedro showed off this really neat wearable nearly showed off this case for the USB the Star Trek and the Star Wars family I'm not supposed big favorite project however check out Britain's work with being able to silk screen on top of PCBs with colored inks that still will go through the yeah even the reflow oven process so it was really neat I remember when we saw some printers the UV printers that would print ink it's okay but it's like it's really it burns off and also like it's expensive and it's like basically no can do it and that's why you don't see a lot of it and this is a really neat way to have really colorful PCBs that are still functional yeah okay on Sundays we do from the desk of Lady Aida this week part one what was on your desk okay I'm working on getting through a whole pile of stuff that was designed during some chip shortages and get to so this neopixel I squared C driver so let you control neopixel some chips that don't have neopixel support you played the data over I squared C also a little little joystick gamepad controller also that uses stemma so just those two boards and I show you know how I design and how I program it we also talked about a micro python history they hit ten year yeah talking about that in our I found our hardware section this week yeah and yeah then we do the great search this one Lady Aida user power of engineering to help you find things on digikey.com what was on the great search this week this week you know we were talking about up to 2040 and how I'm designing so many feathers with it and I realized we actually are covered how to find all the different varieties of Rp2040 boards and chips on digikey so you can get chips they're in stock at digikey and they're cheap they're only 70 cents a piece a very good deal that's basically like wholesale price and if you want to have a ready-to-go board of course a fruit has steps available at digikey but you also pick up the Rp2040 Pico and Pico H which come in pick-and-place real so you can actually place them directly onto a circuit board so I talked a little bit about the layout what things to look out for we'll cast related pads and such and also they have the Pico with header and I found a socket that you can use to plug that into your board so you don't just solder it directly you just you just plug it into your PCB since replaceable not soldered in place like the cast-related pad version and then other live show highlights from this week JP does a product pick of the week broadcast live from the product page here's this week's highlight quick that's my product pick of the week this week it is the cutie pie ESP32 Pico you can code it with our whippersnapper firmware which means there's really no coding at all I've got the cutie pie ESP32 Pico it is plugged in over USB in this case just for power this is paired to a Wi-Fi router this is plugged into the little control pins on one of these smart outlets and I have that running to a little spotlight keep an eye on the spotlight here just clicked my Adafruit IO on off that is essentially just toggling a pin high and low so I've got ground and a digital pin what is it D 13 here plugged in that is controlling the relay on this AC power tail that I have there that is my product pick of the week this week it is the cutie pie ESP32 Pico and catch JP's workshop tomorrow and then we also have deep dive with him on Fridays time travel time so this week couple things that are going on on our website please check out our blog this is Asian American and Pacific Islander heritage month you can learn about this on the website that they have specifically for this but you can also we go to our website so just like every month when there's like which group of people can we celebrate that folks maybe aren't in the spotlight all the time so you can see not only our posts from this year scientists engineers artists and more but from previous years as well lots and lots and lots and lots and lots and lots and lots of people celebrate so check that out and if there is someone you know that we should put in the spotlight let us know and get it up on our wow some open-source news we made a little video celebrating 300 new redesigns and then first it was a still and then then we made a little video so here it is celebrating 300 redesigns all open-source hardware this is the maybe the trailer for a movie we'll see if we turn into a movie so that was a big deal for us and all the ones that we redesigned were submitting of course to the open-source hardware association for certifications because speaking of the open hardware summit was this weekend and for the first time in three years we had guests we did a tour yeah Steph emailed and said hey like could could could some of us come by and I'm like man and she was like hey I know you probably can't do it just had a kid and all the stuff but I figured I'd ask you know what I shall endeavor to figure out a way to make this happen so we had like 15 people and they came by and what was neat is a lot of the folks that were visiting they were from really far away they're from Australia around the world and they they're people that sell their stuff to us and then we resell it and they were able to go down the aisles of Adafruit and like film where it is and everything so we were able to do a complete tour worked out really crazy rainy day got to try out a stroller with with a rain thing that was kind of fun for me and our kiddo but they also came by and gave us these gifts these are some of the things that they they make so more do you want to say what some of these are yes I'm afraid I don't remember who gave me each one but the first one was just a little badge with a battery second one was a cool butterfly with LEDs is it was a pin badge that was like a brooch had beautiful these this is a battery charger but it's got like a little Pikachu it's a yellow PCB you can see they they marked it with so with marker to make the sub-screen and then there's a the solder mask okay go back one the solder mask is missing over the cheeks and there's like a little LED behind it so when you're charging the battery the cheeks glow red so it's like it's like a little Pikachu so it's cute and then this is from a maker queen Steph Viper who we carry a bunch of her stuff gorgeous she does amazing silkscreen by the way just like top-notch the best and most beautiful PCBs so that was really neat I got a chance to meet the Borg David from me just a lot of folks that I've corresponded for years now online they're all so nice everybody's so nice it was really nice to get together it felt normal it felt like hey we're kind of getting back to to see in people so we'll see if we could do tours again just this worked out really well special thanks to Steph to organize this because I would have not been able to figure out a way to get 15 people on time at the same time she was very organized yes okay let's do some retro yeah it's retro tech time what was your question now cuz we had that yeah that was I already played it yeah we can hear cuz yeah don't worry this isn't it is like so Richard take this week we had a little a little funny music clip that we played for the time trial section anyways yeah yeah cuz we heard it all day I was working on it it was important to me yeah I'll play it again after this so Richard take this week this one's a little different because it's not the usual like oh here's like an Amiga or you know here commenter 64 um this is something that I happen to like but it but it has a somewhat kind of dismal pretty much everything I like has a dark side to it but um so this is a clear TV and I'll remove us for a second and it allows you to see on the inside of the television and how it works and it's yeah and it has no no remote you have to plug headphones into it it has a RF thing in the back you can see directly into it reminds me of those iMacs when they first came out that you could see in the saddest iMac yeah and it's called the secure view and I'll get to that in a second the reason I have one of these is we're building a game area for our kids she's very young but you have to start early and ideas we start her off on like Atari and then work her way up to modern game systems but I thought it'd be neat to see how the innards of a television work now the downside of this is you're probably wondering well where are these where do they come from so this is um where you can buy something like it let me um hit refresh I think the site kind of so this is the more modern one this is called uh it's a secure view clear television there for prisons so you don't put any you don't have any drugs in them or prepare for you know weapons or anything and uh this new one the secure view clear television has like every input possible so despite it being like this totally sucks um it does have better it's it has rf input yeah it doesn't have better features than like it has dj and hgmi it has composite and co and you can see into it ntsc and it has every possible video input scart um so it's it's sad but it's also like yeah there's some video hacking we have like a weird device that had rf output it doesn't you know it doesn't even have it ntsc didn't exist yet or pal it was expected to connect due to the antenna um you know it passed the antenna through so you could have into a tv like your old nintendo and it was like uh i don't have a modulator and you was like oh wait this tv has an rf input yeah and it's like it's just they're really beautiful but you know the the sad part about it is it's it it's it's for prisons um so you can pick up these older ones that just have rfn on ebay or like auctions or whatever and then there's more modern ones that you can get from like gel gel supply dot com um but that's uh this week's uh retro tech okay and then i'll i'll play so we made a new intro i've been wanting to add a musical intro for the time travel section yeah so um we're gonna play this now um see if anyone knows what that's from um because it's it's multi-layered uh there's a couple different uh references to that let's do some python on her word okay python on hardware this week in the newsletter um we are celebrating uh micro python new release and 20 and and and i think um gel supplies yeah i think the browser is like i completely filled like it's just like i'm just not gonna cooperate so um there's a new version and then of course um happy birthday we're gonna talk about that in just a second um but this is the new version we'll you know be doing our part to uh grab the things that are um added so we can keep up with all the changes um and then i think the raspberry pi pico w is now supported with wi-fi that's kind of officially supported and then there's a new lightweight um wireless manager so like the pico w is a great example where you can download uh library files that you need through the internet um they don't have drag and drop file support they don't do mass storage what we do so it's extra useful for what's great is you can pick depending on what you want to do and uh that brings us to um so micro python we're one of the financial supporters we'd support it with code this is where circuit python came from um micro python is celebrating its 10th year it's birthday so we'll get the noise out about that we're a sponsor on uh github and so if you use micro python check out the github sponsors and toss them a buck or two it keeps the development going it definitely helps it's it's what we build our core off of and as they celebrate their latest year um they have one of these cool um here's all the pull requests yeah yeah you can visualize it um which is which is really neat so you can see like kind of what's happened over the last decade but this year they had a really neat poster and uh you can download it we linked to it but um let's just go through this here they go from the early days 2013 that's when we all ran into it kickstarter yeah yeah the kickstarter um then they had micro python pipeboards for everyone they did two talks at python uh uk in 2015 micropython went to space so they had uh micro python on embedded systems that were in rockets that were in um satellites and then um other news and this is where we come in um 2017 yeah so um we've been you know keeping keeping up with the the changes and then also uh making micro python work for our hardware and lots of different hardware and 2018 they announced the pipe board d um it uh i think at some type micro python got some type of space qualification yes cool they did a modular uh system with um their boards to make it yeah you could plug in little like like there's a led add-ons and wireless add-ons and then we did certified and then 2020 hybricks 2021 that's when some of the rp20 40 stuff came along and then kind of big news uh for folks who uh play along in 2023 apparently there's gonna be another platform supported ambic yeah does bluetooth very low power bluetooth very interesting yeah they picked that platform um we've never done stuff with ambic you know we use nordic for bluetooth and esp32 and rp20 40 but you know what it's great to have more chips supported yeah and then we'll see what we uh do and add to circuit my thumb with that it's all part of aid for daily newsletter delivered to you every single week aid for daily.com we do not do anything with your email address and we don't spam you have a completely separate site just to make sure correct it's super clear we don't like spam even more than you don't like spam um let's keep going one of us our hardware company lady eight i've talked about this before we have a bunch of absorbance hardware stuff going on yeah to prove it let's chat about the guides because i'm again i'm a little bit behind on the the guide reviews yeah to prove it we have a bunch of just do this until the graphic show up really yeah it is no besides i'm going your chrome is uh no safari safari is oh so fighting safari okay yeah anyways sorry we have a bunch of guides good thing it's not locked get it out we have a bunch of guides i'm fighting with a browser okay right so uh scroll down as a team so i can see which ones are um or i can i can scroll okay no go go back up see this okay stop uh okay so we've got um over here we've got uh JP's friend worked i guess on the set for Picard um and made these cool like Al Carr's panel for the Star Trek Picard set um and he got to take one home or maybe he stole one i don't know or maybe there was one that didn't make it into the set and he was working on it um and JP offered to make a cool display that would highlight um this panel in the original way these panels were backlit was like dozens of little incandescent lights that would uh light up the back through like you know a long tube so it would like look very diffused um but you don't want to do that to you know make this easy to build so uh he actually just put uh two matrix portals uh sorry a matrix portal and two 64 by 64 led matrices behind it and then mapped the pixels out to different sections and put a diffuser so it actually like lights up each section if you think about it's actually non-trivial to do this if you've got only a panel that has cut out parts like it's only you know it's colored in differently in different parts um but you're a really great guy and i think useful for anybody who wants to do like cell animation backlighting or wants to just light up certain that's a good idea you can get those cells from like cartoons like yes um okay uh circuit playground eight of three sorry eight of three playground notes um is what we're calling the user pages the user pages can be a boring name uh you'll see more rebranding on that uh anybody can write guides on our learning system it doesn't appear on the front page um but you can have your own guides as many as you want to um share content to put your notes it's a really great authoring tool like it's written for me and i'm very picky um and it's free so i can uh check that out and of course it generates pdfs as well uh i've also got a couple new guides the feather so you want to scroll just a little no i'll go through the text okay so the feather rp 20 40 with usb host uh lives with a guide on that um this is you know very rare find it's a mic controller board that you can program it and debug it through one usb port and then connect a separate device on the usb port so uh keyboards and mice you can plug in mass storage devices disk drives um also usb serials for like ft 232 h sorry ft 232 rl or cp 2104 uh is also supported or about to be supported so you can connect to devices that have serial so that you can do quite a bit normally you'd have to have a linux computer do this but maybe if you have a simple enough uh program you can connect directly over usb uh just a reminder it only works in and during at this time because it's very complicated um and in a mega guide i'm making pcb jewelry and art if you saw show and tell she was showing them off beautiful earrings um she always used to come to meetings with these like floppiest earrings and i'm like i know you got those they're very cool we should have make your own so she showed how to make little non-functional like doesn't do any electronics it's made out of circuit board material um using gingerbread which is this very cool um web software that then you can draw and it like does all the color mapping for you and then you export it into kikad which is where you maybe add some electronics so very useful for people making synthesizer panels or badges or pcb jewelry and there's going to be more to come from and she's learning a lot so keep scrolling do like go scroll one then yeah okay um last week we talked about the weather wise wi-fi umbrella stand uh from erin um it's a project it just uses a pico w and some neopixels and lets you know when um she got this like cool glass jar that's really big so she uses an umbrella stand it tells you when to grab your intel um well when you're leaving the house it's likely to ring in the next couple hours um we've got a huge guide uh by trevor about fond glider it's our ios and android app that allows you to write files over bluetooth or wi-fi to your circuit python devices uh simon monk wrote a guide about um his plant monitor he has a really like a multi-purpose capacitive touch uh temperature humidity uh measuring um plug-in board that is meant for no solder required and he has a circuit python library he also micro python i think arduino so good for like any use you want to build uh plant projects uh known Pedro uh there's a video they did a case for um the that feather up to 24 usb host so especially if you're not connecting any other hardware you just want to plug and play and do some hed translation this case will be handy and it's got straps and he's got a little live hinge buttons okay do one more one more chunk one more chunk um the feather this is the one i forgot the feather rp 2040 dvi video synth um is based off of you know we did this guide a couple weeks ago the pico dvi guide which um is uh how to use the dvi output on the feather dvi which can take the hdmi monitors and this is this guide is just like okay how to display shapes text to get it going but then uh liz took it up uh to 11 and made a very cool video synth with four knobs and multiple buttons and a lot of really cool video synth designs um written in arduino uh and if you want to do like cool ellie uh display art that maybe takes sensor data or uses knobs um something that's very hard to build uh to make something small and portable if you want to do video synthesizers uh is very very easy now with the dvi feather okay them's our guides for the week and last week and last week all right let's do some factory footage and that's factory footage let's do some 3d print i have to come up with a sound for this okay this week in 3d printing where to play these back to back this is the usb host video and this cool like browser ring the feather rp 2040 now has usb host support for making and hacking usb devices with two usb ports you can upload debug and have data communication but also send and receive data to just about any usb device at the same time it could also be used to emulate a usb host peripheral this feather features the rp 2040 chip 21 gp i o eight megabytes of spy flash and usb type c and type a ports our 3d printed case is designed to snap fit together and secures the feather without any screws it features actuators for the reset and boot buttons in the back features a slot for wires and mounting the usb ports are easily accessible so you can plug in just about any usb device you can use arduino and the tiny usb library to read information from an attached usb had device just install and load the demo sketch and arduino to see a usb devices info using the serial monitor here we tested a usb gamepad from 8 bit do and an apple magic keyboard be sure to check out the product learn guide for more code examples and documentation we hope this inspires you to try out the new feather rp 2040 usb host for your next project don't forget before you pop over to ii the code is can feather you get all this free stuff too let's kick it off it's my npi big npi brought to you by digikey and ate a fruit it's cre leds that's right what is cre leds what are they doing what do they do well they make gigantic bright leds they're also known for uh pre lighting makes finished led lighting structures and lamps uh but today we're gonna be talking about and look at the part number correct it's the x lamp xp g3 photofill select leds that's the xp g3 um so these are um leds i love the name photofill i mean that's a cool cool name that's the way they call me when i take photos yes photo photo uh so photofill leds are designed for horticulture they're meant for grow lights and they're specifically tuned um for the light frequencies that plants respond to best because if you are going to be using um leds to uh led grow lights if led grow lights but if you're using leds to grow plants i mean of course the sun is free but in some cases maybe the sun has all sorts of extra wavelengths maybe you don't need those maybe you don't need them and so in this case uh you can get bend leds um that are specifically designed for led grow lights now you're gonna be thinking wait creed those are like the evil characters from the marvel cinematic universe that they're technologically advanced and they have blue skin no uh this is crea led and they're you know well known i've definitely used crea leds multiple times they're famous for really really high quality leds that last a very long time um are bend and like very very bright and customizable and um they they're very very good for indoor white lighting especially um but they also do uh different led colors you're often not going to use crea leds for like little indicators you're going to use them when you want illumination like you want a lot of light to flood uh something not just notify you um so for example you know these are some of the leds they have this is uh x lamp series um which is like the package available in just a blue color um with a typical frequency range of 451 which is uh blue so maybe i don't know maybe the crea future science fiction race found these leds they were so blue turned them blue and then this is what happened so it started yeah they started fighting the marvels okay but anyways um back to uh horticulture leds so um this series of leds are designed for you know whenever using um leds to assist or to be the primary light source for plants um they've made leds before that people use a lot of people to use kind of like these generic leds um not specified for uh you use the frequency ranges that you don't mention it later you know which frequencies but they weren't tuned specifically for like the different ratios of red green and blue whereas these leds are tuned specifically for that and the reason that's useful and what people use crea leds for is they're bend um that's like they're specified and you're going to get the specification because when you're making an led you know you have the p in the n type of doped silicon material you put them together and in that um boundary where the p type and the n type go when the electrons and holes pass through um you know they they jump down from one level to another level and they emit that power as light and you can tune and tweak that frequency that they emit like the first leds used dope silicon with um aluminum gallium arsenide or maybe it was a gallium phosphide I don't remember and so you have red leds and those were like the first ones and then as people tried different materials um like gallium three-phosphide or sorry uh aluminum gallium indium phosphide you could get greens or zinc uh silanide or in again n indium gallium nitride you could get violas and ultraviolets so you get different frequencies but in general when you are buying a red led and you're paying you know a penny or two for a red led you're going to get something you see here the lambda the wavelength is between yeah about 600 to 700 nanometers it's not going to be precise and you're not going to get matching between the leds you're going to get something approximate and that's why it's so cheap right you don't you know you're not paying for high precision you just want something where the red led on your microcontroller board or your your indicator just lights up and it's close enough um and so a lot of low cost leds even ones that are illuminating they're not going to be matched like you're going to get whatever brightness and whatever came off of that disc when they diced up um that silicon that the p-enjunction you're going to get whatever came off of that plate and each plate might be a little bit different and that's kind of your problem um when you have plants and you know you've got these green leaves and they're absorbing the light and uh they're using that light to convert the carbon dioxide into oxygen it also takes uh you know nutrients from the soil water and that you know using all the hydrocarbons and the light to convert them um turns it into energy that the plant can use and then when maybe we eat in those cases um the frequency of light that's coming from the sun now the sun happens to be a pretty broad spectrum but not every frequency is used there's certain frequencies that are absorbed much better so you can see you know it's kind of weird about this on wikipedia can i sort of assume that you want the the widest band light but actually you don't you sort of want this you want like a non-linear wave where it's kind of centered around the visible spectrum um but it's not perfectly linear and so like you kind of want a lot of red and you want blue and then green is useful but it's not like the most and so you know a lot of people use just red and blue light and so you can see the elliolite panel on the top right there from a nasa experiment so you can see space is becoming important here this is one of the the kree aliens race learned about this they found our potato plants that's right um and they love these kree LEDs um but the the amount of radiation and the frequency of the radiation is important and it does affect how the plant grows and different plants have different radiation and like you know if you have the sun again it's free who cares but if you're going to be paying for the electricity for these lights you have to pay for the LEDs you want to get the most bang for your buck you want to get the most efficient transmission of electrical energy into uh photonic energy that will be absorbed and then turn into plant energy whether that's corn or flowers or basil what have you um and there's a lot of papers actually there's there's a whole um journal called court of science and there was like dozens of articles in it about uh different LEDs and they they tested all the different um frequencies and ratios between the LEDs uh and brightness is and what types to try to tune it because there's actually a lot there's a lot of investment in it because a lot of people are moving from uh halide lamps or fluorescent lights to LEDs because you don't have to change the bulbs they don't burn out they don't really dim over time um they're a little bit more expensive but like once you buy them you're set and they run for you know a decade plus um LED lights they're not you know they don't last forever forever but they last a lot longer than an incandescent bulb um so the photofill select LEDs have red uh and blue and then you can tweak the amount of green and you'd also I guess add a separate photo red LED if necessary and so you don't actually want white like a pure white color um you actually want this kind of ratio mix of green and blue and you know to be honest I I delved into this for a few hours but you can go on for years and study this and I'm assuming that um Cree and their wisdom uh figured out the exact ratios that most people are interested in and so these are the distributions they have of the different lights there's three versions two 2.5 and three um and they basically looks like there's a peak about like you know 450 nanometers um and that's where you're going to get more or less um relative radiant light compared to um the more blue ratio um so this is uh the order codes so you're going to get um the green blue ratio how much green versus blue um some plants I guess do better with more green you know again you're when you buy two three cent LEDs it's called green they're going to give you the material you're going to get somewhere within you know the the the brightness that you think it is when you buy crealities what you're paying for is that guarantee that um you're going to get the exact frequency and the exact power output that's going to match it's a little bit more expensive but then you don't have to go back and rework it when the LED dies because the crealities are just designed to last a lot longer uh and deal with um the thermal load of lighting a huge grow light um and uh second they're going to get the binning that you're expecting in this this ratio is going to be precise and the way they do it of course is they make all the LEDs and they test them and then they sort the LEDs out so um you know rather than trying to control the doping which they do also they'll bin them after manufacture and so you'll get everything on the wheel is going to be the same match um these LEDs are are very bright you'll notice under the dc4 current um it's two amps right that's the maximum uh current range so these are very small and they're extremely bright um definitely do not look into them with the remaining eye you have um then forward voltage of you know it says if you wrote it about a watt it's about three volts so you'll definitely need a uh LED driving current management system you can't just like put a resistor on them it's it's two amps it's you're gonna want you know buck converters and you probably want to have them all in series so maybe you boost it and have a very high voltage so you can control the current going through a string of LEDs um because you're going to be pushing two amps through them there's also a very specific footprint for the copper um and how you want the paste to be deposited you know there's also a lot written about how to design uh products using these LEDs they're very small for the amount of power going through them aluminum backed LEDs are strongly recommended uh you might need heat sinking um and you know depending on how big your heat sink you might even need active cooling so you might need a fan not a very powerful fan not as powerful as you would need for hid lights um but definitely something to kind of move the air through because even though leds last a very very long time they uh the you know the bonding wires and the substrate won't last if it's overheated too much available on digi that's right they're in stock all the different bins but this is the one we picked out um and I'll just show it on the over to show you how small it is um it's a very small led so think about putting two amps through that it's going to get really hot uh so you're gonna definitely have to think about how you're gonna heat sink this don't don't just plop it on a pcb and think you're gonna be happy you're gonna be it's you know it'll it'll actually get so hot it might dishonor itself and there's a video and we'll wrap up by an api hi my name is derrick miller i'm the rnd applications group manager here at cre led here you're looking at our new j series three volt g class led optimized for horticultural lighting that we call photofill select in this led we were able to optimize the phosphor mixture so that you can pair it with our xp gds photo red to get the highest efficiency horticultural led solution available now this fixture behind me has 1152 photo fill select mid power leds mixed with 48 xp gds high power photo red leds in this fixture we were able to demonstrate up to 3.25 ppf per watt efficiency this fixture has a two channel tunable solution so you can get exactly the amount of red that your plants need our photo fill select leds are available in two different recipes with both a high green to blue ratio and a low green to blue ratio by selecting the two different recipes of green to blue ratios you can mix and match to get exactly the spectrum that you want okay lady it is time for a new product what's up okay well this is a back in stock it's not even a revision but i know people have been waiting like almost a year for these the feather m4s which i'd love the samdi 51 chip it's so powerful this cortex m4 processor um and fpu it's great we got a lot of products and projects that are using the samdi 51 series and we had a shipment of reels in until we were able to get some feather m4 expresses out the door so they're in stock i think last i checked we had about a thousand left i don't know when we're gonna get our next shipment of samdi 51 so if you uh need the same the feather m4 for something uh please do get it soon uh you can overclock the heck out of this it's a great chip um so yeah this is your your fyi next up we have a revision to the mlx 90 393 melexis was hit very hard by the um chip shortage and a lot of sensors were not available but one version of this chip is available i could get a reel of chips it's the same magnetometer but the i squared c address is different so i think the default used to be um o x o c uh c in hex decimal and now it's 18 hex decimals so it codes all the same the sensors the same everything's the same except the default i squared c address is different um i thought it was worth it to get them and you know even though it's annoying to have to change the code examples to use a different address it's a little confusing uh we do print it on the bags now so the bag says it's address x 18 i thought it'd be worth it just to get it back in stock so people could use this very nice very wide range magnetometer all right start the show tonight besides you lady our team our customers is the can feather so the uh so really i'm cranking out these rp20 40 boards with different peripherals on the right hand side um i always wanted a board that had canvas built in for easy plug and play no solder can projects uh and the rp20 40 uh feather is a great place to start that so it's got your classic rp20 40 chipset that's a dual core cortex m0 arm processor nice chip we pair that with eight megabytes of q-spy flash so you'll use that for your program or your files that's kind of the middle top area there you've got boot and reset button so you can enter the boot loader and the reset button of course you can reset whenever you want it's got usb type c for data and uploading um firmware and debugging um lipo battery built in uh with battery charging through usb c so you can take this project on the go uh there's a stomach ut port as well and then in the you know the feather pinout is standard it's got you know 21 gpio pins and four more analog and two i squared c ports and two spi's and two u r so it's got a lot of stuff going on with it great for use with arduino micro python or circuit python and then what i did is on the right hand side um i stuck a mcp 25 625 you know like i've never heard of it yeah it's basically a chip that has inside of it an mcp 25 15 which is a very very popular can controller plus a can transceiver it's just they just took those two chips and they squished it and they called it the 25 625 but the firmware you run on it is mcp 25 15 like firmware wise what the code you'd run for this chip controller is like the most popular can controller we've got arduino code for it there's circuit python i think micro python also has code for it pretty much any programming language is going to have code for that can controller because it's the most popular one in the world there's also a little uh switchcapped boost converter um above it that'll generate the five volts so you can do can bus with five volt power because you need a five volt power um sorry five volt logic interface so the feather still running at 3.3 volts but it has the five volt necessary to do that the can controlling uh there is a terminator a 120 ohm terminator which you can disable by cutting that trace you need at least one termination on your can bus and then uh three terminal blocks low ground and high so now you can plug into any can bus there's a differential signal system uh your shared ground which is handy and then uh low and high and then you know terminal screw on how many wires you want to shove in there and they're pre soldered so it's a new thing i'm trying to get more boards where you don't have to do any soldering it's plug-and-play if you'd like to use it on a breadboard you can solder headers that comes with um this photo shows it yeah we've tossed some headers in but you know if you don't want to use the headers um you just want to do can you're ready to go and again we've got arduino and circuit python code and we also have uh u try f which is a software that ones uh firmware that ones on the rp2040 it allows you to use your computer to connect a can device so like it adds as a usb to can bridge which is very handy and then of course if you want to add sensors so you want to get can node with sensors you have a stem and qt port you can plug in almost any of the many hundreds of stem and qt or quick or picodev boards that come with the connector okay before we uh do some questions um i forget to code to canvother um we're going to do some top secret but put your questions up and discord don't forget a different dot it slash jscore that's the only place we can do the questions because we have multiple streams going everywhere so please put them there let's uh do some top secret and post up your questions while we do that our lady what is this these are slim kale chalk style switches these are very uh low profile switches compared to most mx style uh keycap and switches um and we've got a little breakout that we designed for them um this one has a neopixel that goes through you show it it's got a socket so you can uh connect either linear or clicky style there's that uh glow through neopixel and then uh you need keycaps as well and then we've got a diode so you can matrix these and breakouts all over the place uh so you can um breadboard these very easily so an update to our existing mx compatible neokey uh this is the neokey chalk chalk chalk chalk chalk hi lady who is this this is my new updated tester for our feather rp20 40 with rfm 9x laura i did this board before and i had this module kind of like dangling off these pins here and i wanted to clean it up a little bit and one thing that added to our brains tester board is this ispy connector and this has spi and i squared c and lots lots of gpio so it's like gotten way more pins than just these because it's a tightly packed connector and then over here you see i have a laura module and this antenna and this antenna are coaxial and so uh when i put this board down and i do the test um the rp20 40 programs the client board the feather and then communicates with the laura module uh sending data back and forth that hello world and make sure that the signal strength is correct so this is a nice fast test for our new feather laura boards all right lady what's this this is me uh testing out our seesaw neopixel driver so this is a board that connects over i squared c and it has a 80 tiny 816 here and then there's turtle blocks to connect to neopixels so here i've got one wired up to this extremely long well there's a lot of pixels it's not physically long but a lot of pixels like 200 pixels per meter led strip and it's being controlled over i squared c using python 3 so we've got a circuit python library and it's doing all these neopixel animations and what's interesting is that yes you know this is a raspberry pi and we could run neopixels directly from it but because this is i squared c this will work on any single board computer or device even if it doesn't have a neopixel bitbang timing support you can just send the commands over i squared c and it's converted to neopixels and that's top secret of the week okay we're going to answer your questions i got to do a question like something too i wonder like maybe the riddler had a song like riddle me ask them all these question marks or it could be that uh that infomercial guy that's like you can make money from the government yet all the the the question marks on a suit anyways um we need to want to start reading start with the okay question ever about a product needing a four wire stepper driver to one wire pwm have a tv pcb solution for something like that it's a tiny tiny camera stepper to stuff into a toy tank um i think the smallest four wire stepper drivers you can get are the ones like the little ones that are used for 3d printers they're pretty tiny um and you can just solder into the four pads and then you just send it like a little like step messages it's not one wire but it's it's like only two or three wires required okay next up any et's on mag tags we love them yes um the eink display unfortunately got discontinued and i have to rewrite for a new chip and is it going to be part of the 300 yeah it is it's it's a want to redesign but more on the way it's a bigger it's a bigger redesign because after we write all the firmware code and it's i had i got a couple samples but all the more like yeah we sport grayscale but it's like they don't really it's a little bit like okay except and it is for low power adrino you specifically 80 tiny 841 i'm getting about 500 microamps in sleep mode the adc office at reasonable um in light sleep mode 500 microamps seems reasonable i think a deep sleep should probably be a little bit more like 100 microamps or 50 microamps i'd imagine for the 80 tiny 841 so maybe check your peripherals off you don't have any uh current leakage and then you want to go to deep sleep mode that'll get you the uh the most current but if it's a light sleep yeah half a milliamps about about right okay i can answer the 80 box stuff so we put out a video um just like a month or so ago uh 80 box is shipping this year as you can tell we're slowly collecting all of the parts that we finally got getting all of the boxes ready we'll do an announcement we know for sure because if we say any date at all whatsoever it'll be like where's my camera where's my camera where's my camera um but it'll be shipping soon and we're going to be back to shipping 80 boxes on a regular basis and we have some surprises and more but uh it is just recovery from kind of the worst time ever over the last few years um not only with the lockdowns and just everything that happened but then we had a chip shortage that was kind of never ending and then we had to redesign so yeah i had to give birth yeah yeah there was that too and we have that video of the 300 thing like literally there's some products that most of the components had to be replaced yeah so is it even the same product who knows we've taken it from like 80% to almost 95% of it's getting back which is really good uh let's see if there's anything else before we uh that's our show for night everybody okay thanks everybody yeah nine o'clock yeah right on the dot um don't forget the code is can't matter that'll get you 10% off in the store all the way up to midnight ish special thanks to Dakar who's running things behind the scenes thank you Dakar uh we're gonna play out this has been a different production than i'm like a little funny video at the end if you want to um see everybody next week here's your moment as enor