Thanks all for your help and suggestions. Now I know what's going on, I can investigate my usb, and in the meantime I have a way forward. Hopefully this thread may save others some time if they experience a similar problem. To summarize for the benefit of future readers who just want the answer: If ...

Thanks for the comment about power. I tried connecting the rx0 and tx0 to a separate USB/3.3v serial board and then powering the ESP32 directly from a known high current USB power supply and it now works as expected. So there was nothing wrong with my software setup, and indeed, I can even get the a...

It's all gone a bit quiet here, and I'm still having no joy getting the ESP32 modules to work as soon as I start up wifi it just stops behaving itself.

If someone does have a working .bin file I can try, I'd be very grateful, cos otherwise I'm out of ideas.

Thanks in advance
Gary

Thanks for the suggestion. I have built an environment from scratch on Ubuntu 14 LTS and tried the sample there. When I flash that sample, I get exactly the same behaviour. If there's a known working version of the bin files I could try to flash, that might be the most effective next step. Alternati...

Thanks for the suggestion - tried it but no difference at all I've now added in some statements to flash the onboard LED on gpio 2 in a pattern to provide feedback. What's weird is that although the serial port dies on me, and there's no wifi connection, the chip itself continues to run (at least th...

This is what comes out on a terminal when I run the unchanged program. D (2468) nvs: nvs_open misc 1[0m D (2468) nvs: nvs_get_str_or_blob log[0m I (2471) wifi: wifi firmware version: 9bf11be I (2475) wifi: config NVS flash: enabled I (2479) wifi: config nano formating: disabled [0;32mI (2483) system...

I've just started trying out some ESP-WROOM-32 modules built into the ESP32 devkit v1 board from www.doit.am After a bit of messing around, I have got the esp-idf to work with various of the examples which come with the kit, but as soon as i try to use any wifi functions, weird things happen. Specif...