Firmware development for the ESP32-C3 0.42" OLED board (ESP32-C3FH4, QFN32) — the ABRobot / 01Space "ESP32-C3-0.42LCD" mini board and its clones, sold as "ESP32-C3 SuperMini with OLED" and "ESP32 C3 OLED development board". Covers its 72x40 SSD1306 OLED on I2C, the single I2C bus, blue LED on GPIO8, BOOT button on GPIO9, USB Serial/JTAG console, ADC1, Wi-Fi/BLE, and the ESP-IDF + PlatformIO setup around them. Use when working on this board or a bare ESP32-C3: project setup, platformio.ini and sd
mdr add alexex1993/mcu-skills/esp32c3-oled042@git:20260901.8fa8d1dmdr add alexex1993/mcu-skills/esp32c3-oled042@sha256:02c2cd0ac32d4e9f[](https://markdownregistry.com/a/art_ulzh3wvocag62fyq)
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| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260901.8fa8d1d latest | 2026-09-01 | 8fa8d1d | 13,361 B | A | view · diff |
| git:20260824.3f90932 | 2026-08-24 | 3f90932 | 13,040 B | A | view |
alexex1993/mcu-skills · 15 stars · license MIT · pushed 2026-09-03 · branch main
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