🔌 KF Arduino
NOT CONNECTEDLive from the panel
–watts
–volts
–amps
0.000watt-hours today
–peak watts
Put a program on the board
No Arduino software needed: pick the program and your board, plug it in by USB, and press Install. Works in Chrome or Edge on a computer.
If it says it can't reach the board, switch to the other Board choice (many inexpensive Nanos use the old bootloader). Close the Arduino IDE and any other app using the board first.
Serial monitor
What you need
- Arduino Uno or Nano and its USB cable.
- INA219 sensor board (for the best program), or two resistors, 100 kΩ and 10 kΩ (for the no-sensor program).
- A small solar panel (5–6 V, up to 26 V) and something for it to power: a USB battery, or a 10–20 Ω resistor.
- Jumper wires.
Wiring · INA219 program
- INA219 VCC → Arduino 5V, GND → GND, SDA → A4, SCL → A5.
- Panel + → INA219 VIN+. INA219 VIN− → + of your battery or resistor.
- Panel − and battery/resistor − → Arduino GND.
Wiring · no-sensor program
- Panel + → 100 kΩ → A0 → 10 kΩ → GND (reads up to about 55 V).
- Optional: a 10 Ω resistor across the panel so it can estimate watts.
- Panel − → Arduino GND.
The programs' code
Already built in: you don't need these unless you want to change them in the Arduino IDE.