This is a bit of a side project, but I need more Photon sensors to control the electrical outlet controller. I am creating a PCB with:
2 - NeoPixel WS2812B outputs.
1 - USB port with power switching
(This is to test the switching high-side switch, which will be featured on the next PhotonHome revision)
1 - DHT22 Temperature and Humidity Sensor Input
(I can't keep putting the whole sensor PCB in the freezer, its going to short someday)
1 - Thermocouple input header
(This requires the SparkFun Thermocouple Breakout - MAX31855K)
Here is the schematic:
Here is my first pass of PCB routing:
Once I get paid for another electronics job, I am going to order this board and the materials for the next iteration of the PhotonHome. This board will give me the sensor functions that I need, and test out a few circuits which will appear in the next PhotonHome revision.