 Well, I finally put together my first AT-Tiny UPDI-based programmer and tester kit. This is for the new AT-Tiny 817 breakout. Unlike many AVRs, this new series is programmed with a UART system called UPDI. And I have this running, the programmer itself is running on this Metro M0. So it's like, hey, where's the board? So I'm going to insert the board, put the orientation like this, plug it down. And you'll see, you know, it does fuse checks, it erases the chip, it programs, and it actually does a full test of the GPI over the product as well. This is cool because it's so fast. Even compared to using something like a USB console cable with a Pi MCU Pro, which takes like 20 to 40 seconds, this is like two seconds to program. All you have to watch out for if you're using UPDI is every time you write a fuse, you have to erase to unlock the chip. That only took me a couple days to figure out, but now I know.