The aim: Create a 3.3V source from a –5V supply. You can obtain a precise, positive-output voltage from a negative-voltage supply with a boost converter and a linear regulator. The input and output ...

For those looking to upgrade their kid’s ride, [David] has provided source code for the ESP32, a parts list, a wiring diagram, and even the 3D models for the few parts that needed to be printed.

There’s no shortage of things to like about the ESP8266 and ESP32, but if we had to make a list of the best features these WiFi-enabled microcontrollers have to offer, their power management … ...