As I've experimented and played with a lot of different sensors, I've discovered that these basic devices can be built for super cheap, and they're incredibly versatile. When you're done using an ...

[Stefan]’s Mini WiFi/BLE 4WD robot platform (seen next to a matchbox above) packs an impressive capability into a tiny rover. It’s based on a SparkFun ESP32 Thing, a very compact way to add ...

Espressif Systems makes the chip, and its ESP32 data sheet has nearly no mention of the Hall sensor – this is the longest and most detailed section:. 4.1.3 Hall Sensor ESP32 integrates a Hall sensor ...