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Hacking a Smart Home Device (2024)

(jmswrnr.com)
318 points walterbell | 1 comments | 15 Apr 25 03:12 UTC | HN request time: 0.21s | source
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harg ◴[15 Apr 25 08:17 UTC] No.43690253[source]▶
I wonder if it would be possible to figure out which pins are connected to what on the device's board and just flash the thing completely with ESPHome and write a custom yaml config for it, rather than adapting the existing vendor firmware.
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ddeck ◴[15 Apr 25 08:26 UTC] No.43690310[source]▶
It's certainly possible. Tracing the MCUs IO lines to LEDs/buttons/relays etc on a PCB is usually pretty straightforward.

I have just finished doing this and writing replacement firmware for the Aqara E1 series of Zigbee switches, after getting fed up with them not supporting basic Zigbee binding functionality.

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1. wezdog1 ◴[15 Apr 25 15:14 UTC] No.43693992[source]▶
Amazing. I have the Aqara Z1s and it has the SI labs MG24 chip. Ive always wanted to reflash it because I believe it supports thread at a hardware level.