 electronic friendship bracelet. This is for like the cyber Taylor Swift concert. Now this is a 300 millimeter long not one foot long swd cable handy for if you say want to debug your metro m7 with a jlink or any other swd debugger this is a 0.05 pitch not 0.1 inch pitch connector like i said very common for arm cortex chips is a very standardized connector that you would then use to do step debugging or programming so our metro boards tend to have them some more feathers have them you'll see this on almost every kind of dev board okay next up next up we have the corvo to dev board from expressive we try to carry all their dev kits i will say that this is the a minimal version of a dev board it is meant to support lcd and camera but it doesn't actually come with the lcd and camera so just be aware of that like it comes as is it has an esp32 s3 on there and it's designed to make it easy to interface with cameras displays it has two microphones on there it has a input and output i2s amplifier and and microphone input so good for like av camera projects with the s3 it sort of replaces an earlier corvo one board which we actually liked we did a lot of our initial esp32 s3 development on it that got discontinued so there's this one has battery in speaker out couple buttons you know some capabilities extra debug port with um it's sorry usb serial port with a usb serial converters that's why there's two usb ports on there on off switch i think you know good for developers with the s3 you want to especially use the camera and i2s peripheral support all right the star of the show tonight besides you lady our team our customers our community everybody who makes this thing go called eight fruit is the in a 228 power measurement breakout does land us actually in mid 2020 and was unable to get chips until like last week so now it's in stock this is a really really nice power monitor we've had the in a 219 the in a 260 it's kind of like the best of them all it's a little more expensive but it can do up to 85 volts common voltage which is great the other ones i think max out at like maybe 24 volts this can do up to 85 volts and it has a 15 milli ohm 1 percent current measurement resistor that's that big resistor in the middle there which means it can do up to 10 amps in one motor up to 2.7 amps in like a different gain mode there's an internal gain of four positive or negative direction and low or high side measurement and it's got a astonishing 20 bit adc inside of there so even if you're measuring up to 10 amps you can still get some milli amp precision and accuracy it's very nice you know 20 bit current and voltage measurement device we've got Arduino library for it secret python library coming shortly but basically like you want to have high dynamic range of measurements this is a chip that's going to do it because the other measurements chips like the in a 260 and 219 i think they max out at like 12 or 16 bit resolution and that that extra 4 bits does help so i do have a live demo i put my live demo still works yes let's go let's go ahead okay so i've got here i'm going to move this a little confusing i've got here two two feathers one's being measured and one's the measure so this is this is just the feather that's connecting to the sensor itself and then this is the sensor so this is the in a 228 and the in a 228 is wired so it's between this battery this battery and this feather board so i'm trying to get everything here so this is a esp 32 feather being powered from this battery and the battery is going through the current measurement live demo um and then this is measuring it so what this what this feather is doing is it's going through three different modes it's going through not sleep mode where the leds on light sleep and deep sleep because i wanted to show that it does um you know just because it's got that 20 bit adc it can measure i mean go up to 10 amps but easily measures the 40 milliamps that is how much it does uh use when it's in running mode and then when it goes into light sleep mode it goes down to like you know one or two milliamps and then when it um goes down to deep sleep i will say it's not as precise because the deep sleep mode is about 15 micro amps that's kind of when you know you might want to do some more averaging um to verify the uh the current draw um or you might want to i i'm honest i didn't reduce the gain by four like i could but it can go down to the micro amp range uh it won't be as precise as something designed specifically for micro amp measurements but given that you can go up to 10 amps on this it's a very wide range of you know three decades of current measurement and the voltage measurement is also really great um you can also get temperature from here and we'll also do power measurement for you it will actually do the power or not just instantaneous power but coulomb counting and it will do the coulomb counting for you continuously and then give you like how much total uh how many total coulombs you've used in power so this is really this is particularly good for low power and high power measurement and overall power usage not just instantaneous voltage and current and that is new