ESP32 Version：

ESP32-C3-0.42LCD

ESP32-C3 is a low-cost microcontroller from Espressif that supports 2.4 GHz Wi-Fi and Bluetooth® Low Energy ( Bluetooth 5 (LE)).Use RISC V as the core.There's a minimum number of pins on this chip, it's specifically designed to be low cost and for simpler projects than ESP32-Sx or ESP32 classics with their large number of GPIO. Think of it more as an intended replacement to the ESP8266 than to the ESP32! It has built-inUSB-to-Serial, but not native USB - it cannot act as a keyboard or disk drive. The chip used here has 4MB of Flash memory, 400 KB of SRAM.

The ESP32-C3 integrates a rich set of peripherals, ranging from UART, I2C, I2S, remote control peripheral, LED PWM controller, general DMA controller, TWAI controller, USB Serial/JTAG controller, temperature sensor, and ADC. It also includes SPI, Dual SPI, and Quad SPI interfaces. There is no DAC or native capacitive touch.

With its state-of-the-art power and RF performance, this SoC is an ideal choice for a wide variety of application scenarios relating to the Internet of Things (IoT), wearable electronics, and smart homes.

Features

based ESP32-C3FH4 WIFI & Bluetooth LE RISC-V Single-Core CPU

Type-C USB

4MB Flash

11x IO

1x1.0-4P connector(GND,3V3,SDA(GPIO5),SCL(GPIO6))

1x RGB(GPIO2)

1xLED(3.3V Power Supply)

1xReset button(CHIP_EN,great for restarting your program or entering the ROM bootloader)

1xBoot button(GPIO9,entering the ROM bootloader or for user input)

Compatible with MicroPython, Arduino and ESP-IDF

3.3V Regulator with 500mA peak output

Ceramic Antenna

Size & Weight

Size: 23.5 x 18 mm
Weight: 2.6g

DOCUMENTS

https://github.com/01Space/ESP32-C3-0.42LCD

RP2040 version :

RP2040-0.42LCD

RP2040-0.42LCD is a high-performance Development board ,Integrated 0.42 "LCD (70×40 resolution).with flexible digital interfaces. It incorporates Raspberry Pi's RP2040 microcontroller chip.The RP2040 features a dual-core Arm Cortex-M0+ processor clocked at 133MHz with 264KB internal SRAM and 2MB internal flash storage.

Inside the RP2040 is a 'permanent ROM' USB UF2 bootloader. What that means is when you want to program new firmware, you can hold down the BOOTSEL button while plugging it into USB (or pulling down the RUN/Reset pin to ground) and it will appear as a USB disk drive you can drag the firmware onto.

There is great C/C++ support, unofficial (but really good) Arduino support, You can also use micropthon and circuitpython.

Features

RP2040 32-bit Cortex M0+ dual core running at ~125 MHz @ 3.3V logic and power

264 KB RAM

2 MB SPI FLASH chip for storing files and CircuitPython/MicroPython code storage. No EEPROM

Four 12 bit ADCs (one more than Pico)

Two I2C, Two SPI and two UART peripherals

Integrated 0.42 "LCD

Both Reset button and Bootloader select button for quick restarts (no unplugging-replugging to relaunch code)

1x RGB(GPIO2)

3.3V power indicator LED

3.3V regulator with 500mA peak current output

USB Type C connector lets you access built-in ROM USB bootloader and serial port debugging

Size & Weight

Size: 23.5 x 18 mm
Weight: 2.5g

DOCUMENTS

https://github.com/01Space/RP2040-0.42LCD