Flash MicroPython v1.19 firmware on ESP32-C3 (ESP32-C3-DevKitM-1/NodeMCU ESP-C3-32S-Kit)

To flash MicroPython v1.19 firmware on ESP32-C3, tested on Espressif ESP32-C3-DevKitM-1 and AI-Thinker NodeMCU ESP-C3-32S-Kit, both have a single USB connector. All steps run on Raspberry Pi.

To IDENTIFY connected USB port. 

- BEFORE Connect ESP32-C3 dev. board to USB
clear dmesg buffer:
$ sudo dmesg -c

- AFTER ESP32-C3 dev. board connected to USB
display dmesg:
$ dmesg

Download firmware.

Visit https://micropython.org/download/  to download for esp32c3.

Select "ESP32-C3 Espressif"

Flash Firmware.

To erase the entire flash using:

$ esptool.py --chip esp32c3 --port /dev/ttyUSB0 erase_flash

Flash firmware starting at address 0x0:

$ esptool.py --chip esp32c3 --port /dev/ttyUSB0 --baud 460800 write_flash -z 0x0 <.bin>

Finally, test with Thonny.

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more exercise:
~ MicroPython/NodeMCU ESP-C3-32S-Kit to control onboard LEDs
~ MicroPython bluetooth (BLE) exampls
~ detect onboard BOOT button, and control onboard RGB LED (Neopixel)
~ send/receive command via BLE UART
~ multithreading exercise, get user input un-blocked using _thread
~ ESP32-C3/MicroPython + SSD1306 I2C OLED
~ ESP32-C3/MicroPython BLE UART Communication