 Hi, I'm NPI. OK, this week's Eye on NPI is from Digilent. This is all brought to you by DigiKatorFruit. Does he's every single week, Lady Aida? What's this week's Eye on NPI? Hi, thanks. I'm glad. Thanks. I'm glad you asked. This week's Eye on NPI is, in fact, from Digilent. It's doing all the triangle companies. Triangle. All triangles all the time. This is also from Measurement Computing, which is the originator of this hardware. Digilent purchased them and merged with them. So if you see, like, I'll show it on the overhead, you're like, why does it say Measurement Computing instead of Digilent? It's their one company now. So this week's Eye on NPI is the USB 2001 TC. I just thought this was a really great, simple device. It's a single channel, thermocouple monitoring data acquisition device that plugs into USB. That's all it does, but it does it really well. So let's go again. It's got a data sheet. So this is, again, from Measurement Computing. It has one single thermocouple input. It has a 20-bit ADC. It can do four samples per second, which is totally fine. Your temperatures are moving that quickly. You can use any kind of thermocouple, not just k-types, if you have n or t or whatever, which I've never really seen people use. I've only really seen j and k, but you can use any kind. It has the trace curves that convert the microvoltage to temperature. And it's got support for Linux and Windows, and also desktop Python. And so you could use it on a Mac with command line Python. And it just plugs into USB. And on the end, there's standard thermocouple mini-jack. So Measurement Computing, they're a company in Massachusetts, and they do data acquisition devices. They actually sell a bunch of different things. They've got, for example, this Raspberry Pi hat, lots of different DACs, temperature monitors, et cetera. But this is kind of their first miniature desktop data acquisition device. Thermocouples are often used for calibrating equipment. For example, we have a reflow oven at the office where we reflow our boards. You saw that if you tuned in earlier to the footage we have from our factory. You'll use a thermocouple to measure the temperature as a board goes through. It goes up to 250 degrees C. As you can see, a K-type thermocouple or a J thermocouple can go up to 1,200 degrees C or higher. So these are very high temperature readings for kilns, for smokers, for any kind of ovens, et cetera. Anything that can get very hot. Thermocouples are the way to go. They're kind of the best way to measure. Oftentimes, people would say, oh, are you taking Arduino or something and connect analog devices or maxim. Thermocouple amplifier, you read it, et cetera. But this is kind of nice because all in one, it's ready to go. It's plug and play. It has software. It's also got isolation. They have an ADUM signal isolator inside of it. So you do have an isolation between earth, ground, and the thermocouple, which is often like on all of our boards we don't have, you'd have to add your own isolator. So by the time you put the whole thing, it's about the same price as getting this ready to go little deck board. To connect a thermocouple, you're going to need a one of these mini plugs. They're really common. Digikey has them in stock. They're a couple bucks. You'll get your thermocouple wire, which Digikey also stocks. You can get them in any length or you can make your own. And then you just open up the thermocouple connector and you screw in your cable or you can get ready-made ones as well. And what's nice is also the plus and minus. I think the width of the minus is a little bit wider so you can't plug it in backwards. There's called mini thermocouple connectors. So inside is, you're starting from the right. There's the USB controller. It's actually an 8051 Cypress chip. It's the C8051F343 connected to USB through this cable. And then there's an isolator, which uses the ADU-M5401. The text that goes with this presentation has got the link to the Digikey part number. And then it goes to a 20-bit ADC. That is the AD7785. It's a nice quality analog devices ADC that it's got there. I got a little bit of low-pass filter. There's a little capacitor and a ferrite probably to keep them from having a low-pass filter. Probably to keep them from having little spikes that can be picked up by the cables or the 60 Hertz signal that is emanating all around us. And then the software actually is what probably converts that ADC measurement into the temperature because you have to match it. There's a curve that goes with each thermocouple type. So that's done for you. What's nice also is you could get raw data values out. So if you don't want to connect a thermocouple, you could probably just pull that raw value out for a measurement of bridge rectifier or something. Sorry, resistive bridge sensor. This is just a photo of the board I took and she opened it up and the USB connector is that white looks like a JSTPH in the middle there. It's got the five pins that goes to the USB cable and then you see the chips inside and then the Omega connector for the thermocouple. And then I just plugged in a thermocouple that I had sitting around. For software, there is a couple of options. So I just downloaded and installed Dakami or Dakami. It's their desktop Windows software. It auto detects the board and it just grabs data and it was pretty much ready to go in about two minutes. Since this company measurement computing was acquired by Digilent and Digilent is a national instruments company, of course, there's a lot of LabView and MATLAB support. So definitely LabView, if you use NILabView, you're gonna have the best support. There's no direct Linux or Mac graphical interface for that, like I said, there's only Windows it seems, but there is Python support. So, sorry, this is the software for Windows and then for, if you wanna use it with Linux or Mac, honestly, I would just say use the Python library that they've got below. It looks like you can just like query it and get the raw data as needed. This is the software, you know, I just loaded it up. Like I said, it pretty much instantaneously worked. It told me a temperature. You can see I kind of heaped up in my hand and then I released it and you can see the temperature go from 33 degrees C down to 28. Seems to work fine. You can, of course, save to files, change how often you want to do data captures. And then if you need more complicated data acquisition devices, this is, you know, yes, this is the one we're featuring on IMPI, but they do have fairly complicated and nice ones that have multiple channels that have DACs, have ADCs, up to 20-bit ADCs on there, GPIOs, multiple thermocouples, et cetera. In fact, when, you know, we ordered this and we ordered some Digi-Key, they had a hundred in stock and they sold out since. So, yeah, this is- Maybe someone knew that this was gonna be IMPI. There's a little bit of a, yeah, this was a rarity. Usually when I get something, it stays in stock until we do the video, but this time it was, where? The pre-cogs figured it out. And then it got sold out. But do sign up, they'll have more. And if not, check out the other data. This isn't a supply constraint thing where there's never gonna be them for like three years, don't worry about that. I think they really just sold out much faster because it's a pretty good deal for like a ready to go isolated thermocouple amplifier. All right, and that's this week's IMPI. Yep, thanks everybody. Hi, IMPI.