01Space “ESP32-C3-0.42LCD” is a small (23.5 x 18 mm) board equipped with ESP32-C3 RISC-V WiFi and Bluetooth microcontroller, a 0.42-inch display, and a Qwicc I2C connector to easily add modules such as sensors.
The first time I saw it, the form factor immediately reminded me of the nRF52840-based XIAO BLE Sense board I just used to test Edge Impulse machine learning framework. Both boards should have similar use cases, but XIAO BLE Sense includes a 6-axis IMU sensor, and I had to connect an OLED display, while the ESP32-C3 board already integrates a display, and I would have had to connect an external Qwicc module with an accelerometer.
ESP32-C3-0.42LCD specifications:
- SoC – ESP32-C3FH4 SoC with RISC-V core @ 160 MHz, 4MB flash, 2.4GHz Wi-Fi, and Bluetooth 5 LE with Long-Range support
- Ceramic antenna
- Display – 0.42-inch LCD
- USB – 1x USB Type-C port for power and programming
- Expansion
- Qwiic I2C connector
- 7-pin and 8-pin headers with up to 11x GPIOs, SPI, I2C, 4x ADC, 1x UART, 5V, 3.3V, BAT, GND
- Misc
- Reset and Boot buttons
- RGB LED, power LED
- Power Supply
- 5V via USB-C port or Vin
- BAT pin for battery input
- 3.3V regulator with 500mA peak output
- Dimensions – 23.5 x 18 mm
- Weight – About 2.6 grams
The developer says the board is compatible with MicroPython, Arduino, and the ESP-IDF, and provides several Arduino sketches (BLE, WiFi host/station, SCD01 sensor, graphics, etc..) and basic instructions on Github.
It’s not the first time we write about 01Space boards as we previously covered their ESP32 boards with 25 RGB LEDs also pictured above.
ESP32-C3-0.42LCD development board is sold on Aliexpress for $9.95 plus shipping.
Jean-Luc started CNX Software in 2010 as a part-time endeavor, before quitting his job as a software engineering manager, and starting to write daily news, and reviews full time later in 2011.
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