Hi all, I’ve been having serious problems flashing v440 boards. They programmed through the control board first time ok, but never established proper communication with the controller. I also don’t see them blink the blue led every 8 seconds. I tried reprogramming them with lower baud rate image…

Quick update. I did end up desoldering the attiny841 from the board and was able to read and write fuses from it with a high-voltage programmer. Interesting was that the fuses were still set to their default even though there was this one time successful programming through the controller board. …

Hi Tom, I’ve got a new controller and modules (all v4.4). The controller is the latest revision too. I’ve flashed my ESP32, have configured the controller and can access it on port 80. All good there. I’ve flashed a few of the modules using the controller (they say successful). I immediately disc…

@jamesjames it looks like you have done most of the basics. The flashing blue led every 8 seconds is a good sign - it means the modules are working as expected, and code is running. If you loop the TX to RX on the controller, do you see a change in the web interface - the “OOS” errors should incre…

Hi @Stuart , Thanks very much for replying. I’ve connected tx to rx on the controller and I see no changes anywhere. Please would you explain to me what OOS errors are and where I’d find them. The red bar across the top of the page remains. The one that’s waiting for a module to connect. I was goi…

Ok. You would see the OOS error count (if there were any) on the screen it automatically appears. So this suggests a problem with the controller circuit soldering or with the JST cables you are using. Where did you get the JST cables from? You need to make sure they are straight through cables, s…

Hi @Stuart , Thanks for the advice. The JST cables were bought premade from eBay. I’ll check when home in a couple of hours and report back to you. Thanks again for your ongoing support, I really appreciate it. James

Hi @Stuart , My apologies for the substantial delay in reply. I can confirm the JST cables I was using were not straight through. I’ve converted them and now have connectivity between controller and module. Thanks again for all your efforts and assistance. Much appreciated.

[image] JamesJames: I can confirm the JST cables I was using were not straight through. Great, glad its sorted.

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Issues flashing v440 boards

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