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ESP32 C6

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github-actions[bot] edited this page Oct 30, 2026 · 2 revisions

ESP32-C6

Status: supported, on hardware since 2026-10-14. Labels: about 500. Release file: openesl-ap-esp32c6-<version>.bin

The simple choice. One small board (the "ESP32-C6 Super Mini" with 4 MB flash) does both WiFi and the 802.15.4 radio to the labels, with the antenna on the board. It costs about 5 $.

An ESP32-C6 Super Mini board on a USB-C cable
The ESP32-C6 Super Mini, powered over USB-C 		The same board in a small black 3D-printed case
In a small 3D-printed case

Good to know

  • Labels: the C6 has 512 KB of RAM and no PSRAM, which limits it to about 500 labels next to WiFi (an estimate, not yet measured on hardware). When the table is full, the dashboard says so.
  • One radio, two jobs: WiFi and the label radio take turns. An API reply can wait a little, and a label's poll can now and then be missed while WiFi is busy. The label just tries again.
  • No weather by itself: the C6 has no memory to spare for fetching the weather; send it from Home Assistant instead.
  • Flashing: from the web page, the plain ESP32-C6 board. See Flashing the AP.
  • Updates go over the air from the dashboard (Updating the AP).

Next: Flashing the AP.

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