nixie-clock/firmware/uniclock

ESP_UniClock for the NixieIN12v2 clock

Firmware for this clock, based on ESP_UniClock by Peter Gautier (GPL-3.0-or-later), vendored from upstream commit 1189810 (2026-09-07).

• ESP32_UniClock2/: the upstream sketch folder (all .ino/.h files and the web UI in data/). It keeps the upstream layout, so it still opens in the Arduino IDE.
• lib/: the library versions bundled upstream (libraries/*.zip), only those the ESP8266 build needs. The upstream manuals, datasheets, photos and ESP32-only libraries were left out. Exception: arduino-home-assistant is v2.1.0 (upstream bundles 1.3.0, which has no light, number, select or button entities); mqtt.ino was rewritten for it.
• platformio.ini: PlatformIO build for the ESP-12 (4 MB flash, 2 MB SPIFFS).

Local changes are separate commits on top of the import (git log -- firmware/uniclock).

Build and flash

pio run                      # build
pio run -t upload            # flash the firmware over COM7
pio run -t uploadfs          # flash the web UI (data/) to SPIFFS
pio device monitor           # serial log, 115200 Bd

The CH340C adapter has no auto-reset: before each upload, hold GPIO0 to GND, tap RST to GND, then release GPIO0. See CLAUDE.md in the repo root for the wiring.