I've determined that the machine is actually booting fine even without the USB connector. The indicator that it was not booting was an issue with the serial port output - which I'm working on - and that led me to believe that the machine was not booting. So all is fine, and I thank you for your supp...

I put the ESP32 on a cheap oscilloscope and it seems to be sending correct data. I suspect that something is wrong with my usb-serial cable. I will update if I find anything. http://www.rv8.ch/wp-content/uploads/2022/03/IMG_5878-1024x1024.jpg http://www.rv8.ch/wp-content/uploads/2022/03/IMG_5874-102...

One browser getting data from one server can (and usually does) open multiple connections for performance reasons.

https://stackoverflow.com/questions/985 ... -a-browser

I'm using a FTDI USB-Serial adapter with macos, and getting garbled data, but somewhat consistently garbled. I'm sending this: uint8_t buffer[] = { 0x0, 0x1, 0x2, 0x3, 0x4, 0x5, 0x6, 0x7, 0x8, 0x9, 0xa, 0xb, 0xc, 0xd, 0xe, 0xf, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1a, 0x1b, ...

Just a quick update - I didn't have enough time to complete the testing. Will report back with my results in the next day or so.

Might try imagemagick "convert" command - looks like this: $ convert esp32.png esp32.h $ ls -l esp3* -rw-r--r-- 1 esp32-user staff 6789966 Mar 7 14:37 esp32.h -rw-r--r--@ 1 esp32-user staff 50113 Mar 7 14:36 esp32.png Note that the size is huge. Not sure that this will work for you. $ head esp32.h /...

What you can try, perhaps, is simply hardwiring all the required bootstrap pins to what the ESP32 requires... wire GPIO 0 and 15 to 3.3V, GPIO2 and 12 to ground, power on the ESP32 and after a second also hardwire EN to 3.3V. See if that works; if it does you have an issue of the USB-serial chip me...

Paul, did you ever get a reply? I have a similar issue, not sure what I need to do to make sure that my board boots every time it gets power.

Does it work standalone after you either press the reset button or lower the EN line on the ESP32 to ground momentarily using e.g. a wire? If so, you can try adding e.g. an 10uF capacitor between EN and ground. Thanks for your help! Unfortunately neither the EN pin grounding or reset button make it...

Hi, I'm looking for guidance on the boot process for the ESP32. My chip is ESP32-D0WDQ6 (revision 1) on a "FREENOVE" ESP32-WROVER-DEV development board, using Arduino IDE to program it. My issue is that it works perfectly when plugged into my laptop with the USB cable, but not if I move the USB cabl...