README.md

Photocell

WORK IN PROGRESS!

Overview

Photocells are sensors that allow us to measure light. This repository will provide useful (to me anyhow) utility C and Python source code for using photocells with IoT micro controllers such as Arduino and Micropython.

Goals

• Convert: Resistance -> Volts -> ADC n-bit integer -> Lux/K
• Accumulate: Combine Lux measurments so that a meaningful amount of light for a given time period can be determined
  • How much light did a plant get?
  • How much UV exposure?
  • etc.

CdS Photocells

References

• Adafruit Tutorial
• Datasheet
• Datasheet