Part 2 went up on April 28, 2025, right after the corn went in. I ended it with a list of things I wanted to fix and a promise that Part 3 would cover fertilizer application. That took a little longer than “the coming months,” because this project gets used basically twice a year (once… The post DIY Precision Agriculture: Fertilizer Monitor with Raspberry Pi Pico Part 3 appeared first on Justin's IT Blog.