Arduino Wiring

You will need the following parts for this tutorial:

  • 1x Adafruit IO compatible Feather
  • 3x jumper wires
  • 1x 10k resistor
  • 1x photocell

You will need to connect the following pins to the photocell and 10k resistor:

  • Feather GND to one leg of the 10k resistor
  • The second leg of the 10k resistor to one leg of the photocell
  • Feather A0 (or ADC) to the same leg of the photocell as the 10k resistor.
  • Feather 3V to the second leg of the photocell

Note: Resistors and photocells are not polarized, so they can be connected to the circuit in either direction.

You may want to try different resistor values depending on the exact light sensor and ambient lighting!

This guide was first published on Feb 16, 2017. It was last updated on Feb 16, 2017.

This page (Wiring) was last updated on May 16, 2022.

Text editor powered by tinymce.