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--- projects:arlec_smart_fans:overview [2023/10/30 11:22] – tjhowse
+++ projects:arlec_smart_fans:overview [2023/11/01 04:57] (current) – tjhowse
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+{{:projects:arlec_smart_fans:pasted:20231101-045735.png}}
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-And it all works mostly perfectly. OTA updates via wifi only work occasionally, perhaps inside a 30-60 second window after the RTL chip powers on. It takes a fair bit of bouncing the power and retrying the connection to get it to stick.
+Initial flashing done with a USB-TTL serial adaptor using the wiring diagram shown above and ltchiptool. I took a backup of the stock firmware with <code>ltchiptool flash read ambz stock.bin</code> then I used esphome to generate the uf2 file and flashed it using <code>ltchiptool flash write <filename>.uf2</code>
+ Works mostly perfectly. OTA updates via wifi only work occasionally, perhaps inside a 30-60 second window after the RTL chip powers on. It takes a fair bit of bouncing the power and retrying the connection to get it to stick.