Only works when powered though computer USB about espresense

[boredomwontgetus]

yeah exactly the same for me. I have 10 (!) ESP32 flashed and working as long as they are connected to a serial port. I tried 8 different cables and 5 different power supplies. Also powering the devices on the 5v and GND pin does not help. The only way to get it connecting to WiFi is powering it from any (multiple PCs tried) USB port.

When powering from external power supplies the device just opens its AP after a minute. Connecting to this AP and reentering the WiFi credentials does not change the behavior.

[wongkaiyang11]

yup having the exact issue.

[Zitus]

...same issue discovered! What is going on? My esp32 code won't run on 3.3v, 5v, or powerbank USB! only works when powered from the computer USB

[boredomwontgetus]

I did a bit of trial and error and it turned out that i can make it power on from any 5V source when either holding down "BOOT" while plugging it in or by pulling down GPIO0 to ground with a 10k resistor. I have never seen this kind of issue on any nodemcu but for the ones i have (azdelivery) its the only way to get them going.

[angristan]

I also had this issue on my azdelivery one. I bought three from diymore that work fine on any power supply. Might be anecdotal evidence though 🤔

[Zitus]

On SeedXiaoC3 and LilyGo TQT-Pro , it happens, when the code is one that tries to scan for BLe devices. Doesn't happen when I upload other code so this might be code related. No pressing of any button helps with 5V.

[borodaaaaa]

The same issue here. It does not work with USB wall chargers(tried a few) . I see ping drops a lot or no ping at all when is on wall usb plug. Web gui does not load at all... pressing boot button before plugging it it - does not do the trick.

You have to connect it to a PC usb port. Once in a pc USB it Runs fine! the same cable used to connect to pc and wall chargers....