Diagram

last modified: October 23, 2025

Plant Watering Sensor - Precise Current Measurement

Posted on 2017-02-23— Projects

I struggled to measure microamp currents for my plant watering sensor until I tried the µCurrent Gold. In this post I show oscilloscope traces, energy estimates with and without LED flashes, and explain how the µCurrent converts current to voltage. Read on for measurements and upcoming PCB prototype details.

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Long-Term Test Finished

Posted on 2015-08-27— Projects

I finished a multi-day test of the minimal data logger, recording hourly readings to check stability and battery use. I walk through the reset issue when connecting via TTL, the coarse integer readings, how I imported and charted the data, and the small improvements I plan next — please read on.

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