MicroPython variant for ESP32C3

This firmware is designed to run on ESP32-C3 boards using MicroPython. It drives a Nixie tube clock with high refresh rate, advanced dimming, and blending effects, leveraging the ESP32's RMT peripheral for precise timing

Highlights

High Refresh Rate: Smooth, flicker-free display using RMT hardware
Dimming & Blending: Configurable night mode brightness and digit blending transitions
Configurable via config.py: All major settings can be overridden by uploading a config.py file
NTP Synchronization: Periodically syncs time with NTP servers
Timezone & DST Support: Adjustable timezone and daylight saving settings

Configuration Options

You can override any of these defaults by uploading a config.py file:

CONFIG_TIMEZONE: Timezone offset from UTC (default: 2)
CONFIG_DAYLIGHT_SAVING_ENABLED: Enable/disable DST (default: True)
CONFIG_NTP_SYNC_INTERVAL_HOURS: NTP sync interval (default: 24)
CONFIG_DIMMING_ENABLED: Enable night dimming (default: True)
CONFIG_DIMMING_BRIGHTNESS: Night brightness (default: 0.4)
CONFIG_DIMMING_START: Dimming start hour (default: 15)
CONFIG_DIMMING_END: Dimming end hour (default: 6)
CONFIG_DIMMING_GAMMA: Dimming gamma correction (default: 2.2)
CONFIG_BLENDING_ENABLED: Enable digit blending (default: True)
CONFIG_BLENDING_DURATION: Blending duration in ms (default: 150)
CONFIG_NETWORKS: Dictionary of SSIDs and passwords for auto-connect

Features

WiFi Auto-Connect: Scans and connects to known networks
NTP Time Sync: Sets system time via NTP after WiFi connection
Display Modes: Time, date, and temperature rendering functions
RMT-Based Display: Uses ESP32 RMT for precise display timing
Night Mode: Automatic dimming based on configured hours
Blending: Smooth digit transitions for improved aesthetics

Usage

Flash MicroPython to your ESP32-C3 board
Upload main.py and (optionally) config.py to the device
Reboot the board. The clock will auto-connect to WiFi, sync time, and start displaying

Notes

The firmware is intended for advanced users familiar with MicroPython and ESP32 hardware
For custom settings, create and upload a config.py file with your overrides
RMT and SPI pin assignments are set for typical Nixie clock hardware; adjust as needed for your build

For more details, see the source code and

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