Environmental Monitoring Board
A small sensor board for measuring Temperature and Humidity that I use around my house. First prototype model (left) was based on through-hole components and off-the-shelf add-on boards. Rev. 1 moved it all to SMD and was designed and fabricated through JLCPCBs online platform EasyEDA.
It's easily flashed with tasmota or ESPHome as the SHT30 sensor I used is standard part. The included LED is RGB and allows basic display of e.g. colors mapped to humidity level inside my plant cabinet.
One day I'll get around to a rev2. I can use a smaller esp and do a better job of isolating the temperature sensor from the rest of the board. As is, as it heats up a bit the temperature measurements gets offset by a few degrees. But overall it's a very useful little board.