 All right, so we found out, we knew that Maxim Integrated is now part of Analog Devices, but we really found out now because we were going to link to the Maxim Integrated Twitter account and it's like, nope, gone. So this week's IonMPI is for sure, it's Maxim Integrated, but it is Analog Devices. Okay, it's both. It is though. But the part number is a Max part number. So this week's IonMPI is the Max31888. It's a new high precision, high accuracy, one-wire temperature sensor that's available from Maxim, which I think purchased Della Semi because the DS series was the DS18B20 and this is clearly kind of a next generation. So yeah, these companies, they just kind of squished together a lot, but that's great. They're all Analog Devices now, congratulations to ADI. So again, this week's new product is the Max31888. It's a one-wire temperature sensor, but it also has a unique NIST traceable 64-bit identifier and it has like three GPIO as well. And it kind of does like a lot of stuff going on there and it's a little bit specialty. It looks like it probably goes into somebody's product, like I have some ideas of what that might be, but I thought it would be also useful if you have any kind of temperature monitoring that you have to do, especially if you have either a very limited number of pins that you want to use for temperature modeling, because like the DS18B20, this is a parasitically powered sensor. So one-wire, people don't talk about it as much as I2C, I2C is the most popular sensor protocol right now, but one-wire, which started with Della Semi and is now owned by Maxim, is kind of neat in that you only, like they say one-wire, but it's really two-wires. You need ground and then one data slash power wire, and that's half as many as I2C, which uses four-wires and a lot fewer than SPI that can use, you know, five or more because you need power, ground, and then three or four data lines. So you only need one-wire and that one-wire is used for power and data. You can see the diode inside this simplified block diagram and it can parasitically power, you just need to give it a single capacitor to help that parasitic power, so like I think a one microfarad or so is good enough. And then all you need is the ground wire and the data power wire, and you can chain as many as you want, which is kind of neat. And there's also a special case here where you can use a GPIO pins as kind of pseudo addresses, so you can have eight, you can have as many as you want on one-wire, but if you want to like be able to kind of sub-address them, you can use a GPIO wires as well. I thought, you know, one of the examples they had in the data sheet for what this could be used for is cold chain monitoring, and cold chain monitoring is something that nobody used to know about two years ago, and now everybody knows about because it's how we transmit, sorry, transport vaccines around the world. Vaccines, some of them have to be kept very cold, negative 80 degrees, and you want to make sure that that no point do they heat up. So if you have a big box, let's say you have, you know, a pallet that has vaccines in it, and the box is maybe a meter by a meter by a meter, you want to be able to measure the temperature at every corner, so that would be six different sensors in one one in the center and make sure that at no point does any side of the box get above negative 80 degrees. You could use something like this and you would have minimum wiring, like you wouldn't have to pass a long chain of I-squared C cables and bus expanders around. You would just use two wires and they all connect onto that one bus. Another thing that's really nice about one wire is it's designed for long distances, unlike I-squared C, which is, you know, power ground, SDASCL, and some pull-ups, and it's really only meant for like maybe, you know, 200 millimeters. You can easily put I-squared C bus on with just a pull-up resistor on 200 meters of cabling using a Cat5 cable, which is a lot, like 200 meters total. That's a ton. And here is, there's some examples of different topographies you can use, and it's up to you whether you want to use star or bus or, you know, stubs, and they have some examples also of if you have a active driver, like they have specialty chips for active driving of one wire, you can go up to 500 meters. So, you know, a cable like this that would be very tough to do with I-squared C, this is a one-wire temperature sensor. So this sensor kind of builds on the DS18B20 popular series. It's 0.25 degrees centigrade accurate compared to 0.5 degree. And of course, as those extra GPIO pins that the DS18B20 does, it only has one pin for power and data and then ground. So, you know, it could be good for battery packs, for cold storage, for data logging, ultra-low power, temperature, and GPIO control. There's also a handy-dandy valve board available that you can use from Maxim, which has a sensor, and then an I-squared C to one-wire converter. If you haven't used one wire, do check it out. It's very reliable. It's really good for temperature sensing. There's a couple other, you know, there's eProm, and I think Microchip also has a secure element that's one-wire as well. So it, you know, it is available for multiple different manufacturers. And it's great when you really just want, you know, one-wire simplicity and long-distance support for sensing. Okay, available on Digi-Key. You can actually get it. It's in stock. Yeah. It's available right now, both the valve board and individual chips. There's a short URL, there is the Digi-Key ID, and don't forget, Maxim integrated is now part of analog devices. And that's right on MPI.