Error communicating with SonOff while flashing

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Chuckg
Posts: 56
Joined: Tue Feb 21, 2023 8:05 pm

Error communicating with SonOff while flashing

Post by Chuckg »

Good Evening,

I am getting an error when trying to flash a THR320D. The recommend flash software is reporting an error communicating and recommends lowering the speed. I have taken it down to the bottom speed 115200 with the same error though it does seem to start flashing. I accidentally started with the FT232R set to 5V. This is also my first time ever trying to solder. I'm assuming its my bad solder causing the error.

Thanks,
ChuckG
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Bernhard
Site Admin
Posts: 268
Joined: Sun Jan 23, 2022 3:53 pm
Location: Munich - Germany

Re: Error communicating with SonOff while flashing

Post by Bernhard »

Hi ChuckG,

not snugly fitting rainbow cables or really bad soldering can cause connection issues here (voltage in the cable is switched from 0 to 3.3V mutliple thousands of times per sec). But I'd blame it more likely on the rainbow cable connection or that you roasted the ESP32 with 5V, soldering has to *really* bad to have an effect.

Happy to look at your pictures to search for an error if you want to post your setup.

A very common mistake is to connect RX to RX and TX to TX instead of RX-TX and TX-RX.

Please let me know how you resolved it!

Cheers and good luck,
Bernhard.
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