Custom-outline PCB with eight edge-distributed phototransistor channels, shared VIN and GND, and eight separate analog outputs.

Phototransistor

Two-board ESP32-C3 optical clip with USB-C LiPo charging, OLED display, red/IR LEDs, and remote phototransistor receiver.

A simple Arduino weather shield which allows an Arduino Uno R3 to interface with: ● Barometric pressure sensor ● Phototransistor ● Humidity Sensor ● Temperature Sensor #Arduino #Uno #Shield #Template #project-template #project