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Electronics 

Do I have somebody in my timeline, who is familiar with the ESP32 or electronics in general? It would be great if you could have a look: reddit.com/r/esp32/comments/jz

Thanks ☺️

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Electronics 

@margau I seem to remember such things from ESP32 dev boards... it was mostly fixed by using better USB cables or lower UART speeds. In one case, it only worked with supplementary power; the LDO on that specific board seems to have been at the lowest end of its voltage spec range.

Electronics 

@anathem hmm, having stable 3,28 V measured and completly working UART. The ESP itself tells me via UART that the uC is unable to talk to the Flash. So, no UART involved here.

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