How to Design a Cheap Plant Watering Sensor (Part 4)
Posted on 2017-03-04— How and Why
I guide you through writing a near-final firmware for my cheap plant watering sensor, describing module structure, incremental development, and practical tests. I cover ADC sampling, oscillator checks, EEPROM settings and a prototype fix for the push-button. If you’re building a similar device, I invite you to read the full post.