Raspberry Pi Pico vs STM32 BlackPill for MicroPython: Full Comparison Guide
Both boards cost around $4 and run MicroPython, but they have different strengths. This guide...
How to Build an 18650 battery capacity tester: Architecture & Logic
Part 1 – System Architecture and Firmware State Machine Introduction 18650 lithium ion cells are...
18650 LED Driver Module (AP3031 Boost) for Rechargeable Flashlights
Need stable LED brightness from a single 18650 cell? This AP3031 boost LED driver module...
AP3031 Boost LED Driver Explained: Current Setting, OV Protection, and Design Tips
Technical guide to the AP3031 boost LED driver: how it works, ILED ≈ 200mV/RISET, OV...