TRMNL
TRMNL OG DIY kit 4-gray e-paper
Other · And More
Partly worksLocal
1 report: 1 says it partly works.
Reported with 1 integration: OpenDisplay.
What people report
| Integration | In Home Assistant | In Apple Home | What they said | Source |
|---|---|---|---|---|
| OpenDisplay | Partly works Local | 4-gray panels render garbled because library is outdatedSaved copyThe problem ### Issue My 4-gray e-paper panel (TRMNL OG DIY kit) renders corrupted (dark, low-contrast, scrambled planes) when pushed via opendisplay.upload_image. This surfaced after I changed the IC type from 59 (1-bit mono) to 60 (2 bit 4-gray), through opendisplay web toolbox advanced configuration. https://opendisplay.org/firmware/toolbox/index.html?config=3wEBAA... _Full disclosure: bug was found and fixed by claude AI._ ### Root cause - In py-opendisplay 7.2.3, encoding/images.py::encode_image() encodes GRAYSCALE_4 via encode_2bpp(), a packed 2-bits-per-pixel layout. - Current … Excerpt saved from GitHub on 2026-10-23. | Issue #176293 · 2026-07 |
Each row is one report from a GitHub thread, an integration’s docs, or r/homeassistant. Check the date and the linked source before you buy.
In ReReHome
Once Home Assistant’s HomeKit Bridge shares it, this device reaches Apple Home as a HomeKit accessory behind your Home Assistant bridge, so ReReHome shows and controls it like any other.
Identifiers
| Brand | TRMNL |
|---|---|
| Category | Other |
