This usermod allows WLED to run on the EleksTube IPS clock. It enables running all WLED effects on the background SK6812 lighting, while displaying digit bitmaps on the 6 IPS screens. Code is largely based on https://github.com/SmittyHalibut/EleksTubeHAX by Mark Smith!
Supported:
- Display with custom bitmaps (.bmp) or raw RGB565 images (.bin) from filesystem
- Background lighting
- All 4 hardware buttons
- RTC (with RTC usermod)
- Standard WLED time features (NTP, DST, timezones)
Not supported:
- On-device setup with buttons (WiFi setup only)
Your images must be 1-135 pixels wide and 1-240 pixels high. BMP 1, 4, 8, and 24 bits per pixel formats are supported.
Compile and upload to clock using the elekstube_ips PlatformIO environment
Once uploaded (the clock can be flashed like any ESP32 module), go to [WLED-IP]/edit and upload the 0-9.bin files from here.
You can find more clockfaces in the NixieThemes repo.
Use LED pin 12, relay pin 27 and button pin 34.
Binary 16-bit per pixel RGB565 format .bin and .clk images are now supported. This has the benefit of using only 2/3rds of the file space a 24 BPP .bmp occupies.
The drawback is this format cannot be handled by common image programs and an extra conversion step is needed.
You can use https://lvgl.io/tools/imageconverter to convert your .bmp to a .bin file (settings True color and Binary RGB565).
Thank you to @RedNax67 for adding .bin and .clk support.
For most clockface designs, using 4 or 8 BPP BMP format will reduce file size even more:
| Bits per pixel | File size in kB (for 135x240 img) | % of 24 BPP BMP | Max unique colors |
|---|---|---|---|
| 24 | 98 | 100% | 16M (66K) |
| 16 (.clk) | 64.8 | 66% | 66K |
| 8 | 33.7 | 34% | 256 |
| 4 | 16.4 | 17% | 16 |
| 1 | 4.9 | 5% | 2 |
Comparison 1 vs. 4 vs. 8 vs. 24 BPP. With this clockface on the actual clock, 4 bit looks good, and 8 bit is almost indistinguishable from 24 bit.
