It’s been a while since I built this but I felt like this little sweety should not be held behind bars.

It’s a small development board that I built in Altium, featuring an nrf52840, a PHT-Sensor as well as an FTDI USB-to-UART converter connected to a USB-C connector. It also has a small switch and a battery connector so it can run self-sufficiently. The elongated holes around the PHT-Sensor are supposed to decouple it thermodynamically from the rest of the board and it can be programmed using a Tag-Connect adapter.
Finally, in the top-left there is a small header that breaks out some useful pins for development purposes.

The v1 actually worked first-try, which is a big win in my books. If anyone is interested in the design files or schematics, hit me up!