 The great search brah do you buy did you key and eight for every single week lady uses her power of engineering and more To show you how to find things on did you key lady to what is a great search of the week this week? Okay, this week so I was doing some analog mams and mikes projects, and I wanted to make a breakout for An amplified mams microphone. I like mams mics because of course there's no hand soldering you can pick and place them they're very small compared to electric mics and You know you don't need to buy us them the circuitry is is sometimes a little simpler because they just kind of give you analog output We also have done a lot of PDM mics and I2S mams mics Those are really nice because you know you get a little microphone and get your digital output But there are some times when you really want an analog output like a true and long waveform And in that case, yeah, you need to go with with the mams design Nothing's going to be is is for pick and placing Nothing's going to be as simple as just you know a simple Tin can style mams microphone with a little amplifier And there's no hand soldering which I'm trying to avoid in this design So we do have a breakout that is unamplified for the spw-2430 at the time when this came out a couple years ago You want to go to computer? Yeah When this came out, you know, this is a nice little mams mic, you know, it's it's quite simple You give it power and there's a three-volt regulator and then you get AC coupled or DC coupled output The only problem is yeah, this is only a hundred volts, you know peak-to-peak. So I want to read we do this design I've kind of meant to redo this in a while and I'm finally getting to it but the bad news is that when I went to Order these to just check in on them to make sure that they were available They are in stock But there are NRND so not recommended for new designs, which yeah, there are 97,000 stocks It's not like I can't use this and I think You know, this is something that I'll be able to purchase for a bit, but You know, I don't want to design it if I'm gonna design a new design, you know I'm going to see if there's anything else available So don't get stuck in two or three years having to do a re-spin I might as well You're like a mems mic is a mems mic. I don't feel like there's any one that's particularly better than the other So let's find an alternative to this that is available So I definitely want to be a mems analog micro member There's there's three types of microphones you can get in mems you can get I2S PWDM and Analog and I2S and PDM are more expensive in specialty Analog is is usually very inexpensive. You see these are, you know, 50 cents or so I Don't actually care too much about You know the shape or anything. There's different sizes and packages, but they're all going to be about the same I don't really care about the signal noise ratios or something very simple Normally I would pick on the directional, but there are Just that's not a specific thing and also the frequency range can change so I think I'm just gonna look for any mems analog mics and Then I'm gonna look for only the active ones For this for this new design So let's see there's a couple options Looks like, you know, there's some that are in stock some that are not in stock a lot of that are bottom ported I think I want a top port design a top port design looks like this where there's a hole at the top Bottom port looks like this where that you have to have a hole in the PCB and audio goes at the bottom That's that's good when you want something flush, but in this case I don't I don't think I really need that. I kind of like this top. I kind of get top ported design So let's select for Port Location top and then let's also go with that normally stocking and So it looks like there's a lot of options here, which is really nice again. These are kind of generic There's you know, this is sort of looks like a weatherproof version. There's this kind. There's this kind Looking at You know the ranges it looks like, you know, I can do 20 to 20 kilohertz. That's kind of cool and They're all gonna be three volts But you know, you're gonna pay more for for fancier, so let's let's sort by price and see what we get So there's a couple. I think this is maybe a it's not look marketplace. Okay, okay Avoiding the marketplace looks like CUI devices has this one and then there's also this one this one looks kind of good to me because it's both inexpensive and There's three hundred and seventy thousand stock, which is always a nice look everything else. There's about two thousand stock I'd like it when there's a lot available. This looks like a pretty standard one And what's also nice is it looks like the pad out on the bottom It's actually kind of similar to the pad out here like it's got the four pads Which is pretty cool so I can you know use this and I'll check the the dimensions But hopefully it'll it'll be about the same so let's Let's open this up and then comparing it to This component So this one is Three by point one by two point five millimeters. This one is 3.7 by three millimeters It's a little bit wider and a little bit taller But I think I could probably have the pads fit either which would be kind of nice so I could start with maybe the parts I haven't stopped now and then adapt up to this other the SPU part and then another thing that was kind of neat is There are Different if you don't do the top port requirement Get rid of the port location. I still want to exclude marketplace There are a couple of cool ones like I saw this one. There was a 80 kilohertz Microphone it's bottom ported, but this is kind of cool because it can do You know ultrasonic High-frequency noise so it could be good for You know recording You know you could record high frequency noises that normally microphones are filtered out They usually kind of a window filtered from 20 to 20 Hertz to 20 kilohertz But if you want to make like a back detector This microphone is pretty cool. This is not what I'm going to use I might make a different break out for this back detector, but I thought it was neat that There is there is a men's mic that can go up to 80 kilohertz, so that's you know bats are getting a better app lately So I mean maybe we got to start detecting bats more. Yeah Like the new the new Batman. What else can use it besides to I don't know I think I think it said it was for like effects Like if you like it was for detecting sounds because you can and maybe far field It's kind of it was a little bit unclear exactly what it's for could be military use or You know high-frequency signaling, you know there was the the Wi-Fi chip from Amazon that would use high-frequency signaling to To set the Wi-Fi access point And because you can you can send very high frequencies and this would be able to detect them Stuff that you know even for humans. We can't really hear very well at close to 20 kilohertz You know we can't especially as we age we start I'm not being able to hear Over like 10 or 15 kilohertz This could be interesting. So this is not like the product. I want to use but I thought it was an interesting part That's kind of cool. I could see us. I mean, you know, we can't We'll get in trouble on Twitter if we start like making stuff that Angers the person so we just got to be careful with that but I think just some good ideas. Okay. Okay. All right Well, that's the great search. Okay, it's a great search Where is