At one time, the biggest drawback was that Zigbee radios weren’t included in the phones (Android or iOS).
Unlike BLE or WiFi.
Has this changed?

Sometimes just order through Mouser and they might adjust the delivery—for better or worse. My C3 Dev Kit back ordered for 9/28 just went to 9/13. You can always cancel. Won’t help you but maybe all the C3s went here https://www.cnx-software.com/2021/09/09/lilygo-t32-c3-small-esp32-c3-wifi-ble-iot-m...

On a ESP32-C3-DevKitM-1 I measured 3.29 VDC
White looks a little blueish but they all do for me Edit: (all white LEDs look a little blue for me).

Maybe you are missing udev rules? Indeed I was. :oops: :oops: :oops: Thanks again chegewara (the USB, Bluetooth, BLE, ...) expert. note to self: read ALL the instructions! __________________________________________ /home/pi/.espressif/tools/openocd-esp32/v0.10.0-esp32-20210401/openocd-esp32/bin/ope...

OK. Removed resistors and chopped up a cable. /dev/ttyUSB0 went away and /ttyACM0 showed up--as we hoped. ls /dev/ttyACM* /dev/ttyACM0 However, openocd fails trying to open a USB port now. Does it need two ports? One for JTAG and one for serial? Any help would be greatly appreciated. Those resistors...

@ESP_Sprite Thank you. Will put my DevKitM1 under the microscope and give it a try. you need to move some zero-ohm links to route the USB port to the internal USB-serial-JTAG pins first, specifically R1 and R4 should be moved to R1 and R3. If these are too tiny for you, you can also take an USB cord...

Thank you chegewara. I think I understand. so no JTAG Do you know what espressif hardware devkit and version supports ESP32C3 jtag over USB without soldering anything? I want to use VSCode or Eclipse with visual real-time debugging (like with the raspberry pi pico) but don’t want to buy a j-link. th...

A Raspberry Pi 4 with (Linux Buster) is all I have. I'd like to get jtag usb debugging on a rev. 3 ESP32C3DevKit openocd built OK. Open On-Chip Debugger v0.10.0-esp32-20210401 (2021-04-01-15:45) Or the one I built yesterday Open On-Chip Debugger v0.10.0-esp32-20210721-12-g1cdfdce2 (2021-08-29-20:28)...

Wow! A lot going on there. At the very least, I’ll pick up one of those controllers
Thank you.

I’ve never had much luck in finding a spec on the maximum sample rate for a ESP32 ADC but … The “preliminary” warning seems to have disappeared from the ESP32-C3 spec and Table 14 clearly lists — TaDa — 100 Ksps! I would celebrate but my acquisition code uses two cores! I can’t win. :D But it’s a st...