“When breadboarding, one often needs to monitor different parts of the circuit at once.
To avoid the pain having to stick the multimeter probes from one place to another, I wanted to design a multi-channel voltage and current meter.
The Ina260 board from Adafruit provides a very effective and efficient way for doing so. It contains a very accurate voltage and current meter with an integrated I2C bridge (saving a lot of pins when combining 3 of them!).
The only thing missing was a display. Hence the decision to hook the boards up onto an ESP32 development board, which can easily carry a webserver to present the measured items on a PC/mobile screen.
Supplies:
3 x Ina260 adafruit board
3 x header pins with long pins
Min 6 jumper wires
1 x ESP32 Wrover-B (or any Wifi other board with I2C support)
2 x 19 pin pin header (if applicable)
1 x PCB or Perfboard
1 x 3.3 V power supply”