Hello everyone!
In my project I use ESP32-WROOM-32.
For the first two boards, the programming went smoothly with the specified module (in the picture marked 1).
I use a mini-nova programmer based on CP210x with added transistors for BOOT and RESET. In addition, I added two buttons to it in case of need (marked 3 in the picture).
After successful testing I made 6 identical devices, the only difference is the module. Now it is ESP32-WROOM-32E (board number 2). My supplier says these modules are fully compatible and I found that in the documentation as well.
However, this is not the case.
I never get a response from the module. Nothing is displayed in the terminal when I press BOOT or create a BOOT-RESET-BOOT sequence.
That awful message "A fatal error occurred: Failed to connect to ESP32: Timed out waiting for packet header" comes out when I try to program.
I disconnected all peripherals from the module, only the necessary for programming remained and again negative.
Has anyone had similar experiences and how do I resolve this?
Photo: 002 — Postimages