Jay Jarrett asked 2 years ago
I have two new FTDI boards that I cannot get to work programming an ESP32-CAM, but the -MB board works just fine.
I have been over all the RNL instructions many times, but cannot find the problem. Both boards are 5V and both boards get the same error message “A fatal error occurred: Failed to connect to ESP32: No serial data received.” and “the selected serial port does not exist or your board is not connected.”
Sara Santos Staff answered 2 years ago
Hi.
Are you connecting GPIO 0 to GND when uploading code?
In some boards your need to press the RST button right after starting the upload.
Check which drivers are used by your FTDI programmer. You’ll usually find that information on the product page.
You may need to install them on your computer.
Regards,
Sara
Jay Jarrett answered 2 years ago
Hello, again,
Tried all of the above, again this morning. No bueno. The FTDI board blinks when I connect it to the computer, but when the IDE tries to connect to the ESP after compilation, nothing happens.
I’m using a Sparkfun FTDI and installed the drivers they link on their site again this morning, but same result.
I’m stumped.
Jay
Sara Santos Staff answered 2 years ago
Hi again.
Can you double-check the connections again between the FTDI and the ESP32-CAM?
If the ESP32 board is working and I believe that the Sparkfun FTDI is a good one, maybe it is a problem with the wiring. Also check if your jumper wires are in good shape.
Regards,
Sara