Hi, after 6 years of fun ESP8266 development, I’ve bought 3 ESP32C6 dev boards with serial ports to try. Plugging them in to my laptop with a USB C to A cable causes the tri-color LEDs to light white. Pressing BOOT button, the LEDs changes colour to RED but comes white again if power cycled. Where I am stuck is that I cannot download to it. I never see the /dev/ttyUSB0 device after pressing BOOT then RESET. I have tried numerous button combinations but the serial port never appears in /dev. ‘lsusb’ shows no device. I’ve even tied Input 8 to 3v3 and 9 to 0v to force programming without success. With the old ESP8266 and an FTDI adapter, holding down the button while applying the power brings up the serial port every time. What’s the secret with ESP32? Thanks, Andrew
I may have worked it out. The pins TX and RX at top right on the board seem to output some data. So only the power is via USB and the data is by an FTDI chip that I’ve connected to the PC.
Hi Andrew,
Welcome to the forum!!
Seems like you are getting to the bottom of it! Definitely not the first time someone has had trouble flashing an ESP32.
If you do run into more trouble, could you please send through a link or SKU for the product you have?
We ought to be able to figure out anything that might be going wrong.
Liam
Hi Liam
The boards are
- 2 x WS-27035 - ESP32-C6 Mini Development Board
- 1 x WS-26976 - ESP32-C6 Mini Development Board
They arrived just last week. I’m definitely getting some results - here is the message from some diagnostic software:
Chip is unknown ESP32-C6 (revision 3)
Features: Wi-Fi
Crystal is 40MHz
MAC: c0:00:00:00:00:00
So this is quite pleasing. This new ESP32 supports Zigbee as well so that’s why I want to try it. It looks like things are now underway.
Regards
Andrew
Glad to hear that, @Andrew142038, good to see that you’re making progress.
Let us know if you stumble upon any new problems.
Thanks Jane, all is going well, I managed to program and get 2 units to communicate following the examples at XIAO ESP32C6 Zigbee Quick Start Guide (ESP-IDF) | Seeed Studio Wiki. I’m now ready to write my own code. These C6s support I2C in hardware which is such an improvement over the ESP8266s I’ve been using.
You may want to remove the ‘ from the url above… Currently shows a 404 
