 We're just a lady. I brought you by did you key? Thank you. Did you key and Lady data lady data you use your engineering powers every single week to find things on Did you key? What is the great search this week? Okay this week We got this paper shoot camera that we just did a little bit of tear down on and I really like this four-position switch I'm I'm a huge fan of slide switches. I really think They're super awesome. I mean I like buttons tactile buttons are good But you know if you're not doing tactile buttons. I really like slice switches. They're easy to understand They're they're you know, you can use them even if you aren't looking at something you by feel which I really like so they're good for accessibility They last a long time, you know, you know for the most part unless they get wet, but you can still get weatherproof ones They're good for power. They're good for signal. They're good for everything. So you know on the on the LED glasses designed here I've got This is a slide switch that I use for on off. So you can Turn the whole thing on and off pretty easily With the slide switch There's also buttons of course to do reset, but side switches are where it's at my opinion and I've used, you know single pole single throw switches, which are kind of rare usually use tactile buttons But single pole double throw which is on off single pole triple throw for like three modes But then this was this was a fabulous Single pole for throw and I thought like let's let's check that out because It could be useful for other people and I like that. It's a through-hole switch You could easily add it to a design to add a four elements of selection. So let's go to The computer and actually wanted to show real fast Different switch Schematics and what what they mean. So this is You know, I always get confused. What's what's the pole and what's the throw? So if you don't remember, which is which don't worry. I've been doing for 20 years. I still can't remember But the most common thing is, you know a single pole single throw, which is like a usually a tactile button You know, it's it's just you you press you press it to turn it on There's a single pole double throw spdT Which means there's a there's a single thing and it can go between it can throw between two options So that's usually an on off switch There is the single pole triple throw So again three options and then I'll note something that it always You know doesn't trick me up but can trick other people up Um, I'll go this image make it nice and large so the Single pole single throw is spst and then spdT and then you'll also often see dpdT. That's the dual pole dual throw I see these often because surface mount slide switches from mechanical strength. They often have two separate switches It's also good. Um, the double pole double throw if you want to I like these switches when it's like, oh, I want to switch I squared C or UART connections. You want to switch like a simple two wire bus from one set of pins to another or from controller to peripheral I like the spdT or dpdT. I use those often on Our shields like for gps modules where it's like, oh, do you want to use UART on the soft serial or the hardware serial one switch switches both pins over between two sets But then when you get to sp3T and above you don't use T Like use s for single d for dual But when you get to three or four you use the number so just remember that don't sp Tt does not exist. There's no t for three. You actually use the number three So, you know, it's good to know when you want to, um, search for it because when you go to digikey You know, you can search for spst And you'll get all sorts of like toggle switches and stuff Um, then spdT also Totally awesome lots of different options relays. Also, you can get them in spdT type But if you want to do, um You know fourth row it's not spft Which sounds like something you put on your skin to avoid getting burnt. You actually want to do sp4t So sp4t actually will get you, you know the thing you want and I think you can get five t but i have four t is kind of maxed out that, you know DT and three t are kind of not too uncommon But four t is quite rare. Um In fact, it's so rare that there's only 31 options in slide switches. There's also, um rf switches You know, there's soft switches so that that philosophy of like, oh, there's a throw and a pull The the throw and the pull might be completely software implemented. Um, which is what you'll get with rf switches and stuff Um, but for slide switches. Oh toggle switches also, you know, those are you can use those but they tend to stick out of it Not it's easy to implement into design Uh for slide switches Um, yeah, there's not that many, you know, I mean they do look Kind of like what we want, but there's not a ton Uh, that said let's only look at the ones that are in stock and active Which cuts it down to only eight options really not that many Um, but all these look pretty good. Uh, this one I thought was like really compact, you know, surprisingly So this looks very slim So I don't really want this one and this one is a right angle Um, one thing to note when you're programming these when you're when you're putting these into your design Really look at the data sheet very carefully because it's not like The there's sometimes two pins even though it's a single pole Sometimes there's two pins for the like for the mechanical layout Sometimes there's two poles and sometimes Um, they're not in the order that you think it is like the leftmost switch is not the leftmost pan or whatever So just really read the data sheet and and maybe use a multimeter when you get the part to really make sure you're mapping it correctly Um, but these all look pretty good. There's like a bunch of right angle ones Uh, you know, there are our voltage ratings if you're using these for power switches check out the voltage rating the current ratings Um, you know, you can get you know, you can get switches that are high current high voltage But what I like to do is if if I really like a switch, you know, you have to switch power I'll connect it through to a transistor and then the transistor does the the switching itself But that said the one that I kind of like the most, you know, there's there's Inexpensive ones. This one's the cheapest. This was, you know, 45 cents Um her it's a right angle style and I do like that it has the two mechanical Connects on the side. Um, but for style and looks and also number of parts in stock the This one the apm one. I mean, I was 47 000 pieces in stock, which is always kind of promising I like that and uh, I mean like it gets a lot and then they do have the The 3d um rendering of this So if you're interested in like, what does this what does this look like? I like it has a nice sticky outy part the The actuator sticks up quite a bit And it looks like it's easier to solder into place You know, it is open. So you just have to make sure that it's uh, keep it dustproof, but otherwise So you can switch, you know, not too bad dollar or so and then, uh, can do up to 300 milliamps at 125 volts So you could use this as your power switch You don't need to have any extra circuitry or you can use it a signal if you like either one, but A nice switch as p4t Good for you when you're making a camera with four different filters and that's the great church