I am using the ESP32-S3-DevkitC with Arduino IDE. When I load a program from Arduino via USB, the code runs without issues. When I remove the USB connection and power the DevkitC board with an external 5V DC power supply, the program does not run. If I press the reset button the program runs.
How can I get the ESP32-S3-DevkitC to boot up from an external 5V supply without physically pressing the reset button?
Thanks
ESP32-S3-DevkitC does not boot up when powered by external 5V supply
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Re: ESP32-S3-DevkitC does not boot up when powered by external 5V supply
Can you try adding an 10uF capacitor between Gnd and EN?
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Re: ESP32-S3-DevkitC does not boot up when powered by external 5V supply
OK. I will try that. Just to clarify, it looks like the EN pin is connected to the RST pin on the Devkit board (pin 3 on J1). Is this correct?
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Re: ESP32-S3-DevkitC does not boot up when powered by external 5V supply
Yes, that is correct.
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Re: ESP32-S3-DevkitC does not boot up when powered by external 5V supply
I added a 10uF capacitor between 5V and GND. It still did not boot up and run the program the first three times I applied 5V. However, it did start up the forth time I applied 5V. So this is solution looks like movement in the right direction but marginal and that obviously is not good enough. Any other suggestions? Different capacitor value?
By the way, I also tried powering the board with 3.3V and that does not work either, but I do get a message over the U9TXD (GPIO43):
rst:0xf (BROWNOUT_RST),boot:0x0 (DOWNLOAD(USB/UART0))
waiting for download
By the way, I also tried powering the board with 3.3V and that does not work either, but I do get a message over the U9TXD (GPIO43):
rst:0xf (BROWNOUT_RST),boot:0x0 (DOWNLOAD(USB/UART0))
waiting for download
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Re: ESP32-S3-DevkitC does not boot up when powered by external 5V supply
Correction to last post. I added a 10uF capacitor between RST(EN) and GND.
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Re: ESP32-S3-DevkitC does not boot up when powered by external 5V supply
That is nice, but did you also try it between EN/reset and gnd like I suggested?
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Re: ESP32-S3-DevkitC does not boot up when powered by external 5V supply
I corrected my original post.
My last post says:
"I added a 10uF capacitor between RST(EN) and GND"
My last post says:
"I added a 10uF capacitor between RST(EN) and GND"
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Re: ESP32-S3-DevkitC does not boot up when powered by external 5V supply
Gotcha. Hm, I'm not sure why it does that then... you have nothing else connected to the DevkitC?
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