arduino Nano V3.0 ATmega328P 5V 16MHz CH340C Type C

4 LED and 4 Keypad kit module for Arduino

2.42 inch 128*64 OLED Display Module I2C 5 pin interface SSD1309 Driver Chip

USB External Sound Card Module with Speaker Interface for Raspberry Pi, jetsun and pc  

Introducing the Arduino UNO R4 Minima! This board boasts the RA4M1 microprocessor from Renesas, delivering increased processing power, expanded memory, and additional peripherals. And the best part? It stays true to the reliable UNO form factor and operates at a practical 5 V voltage. Brace yourself for an upgrade like no other with the Arduino UNO R4 Minima!  

Arduino is an open-source physical computing platform based on a simple i/o board and a development environment that implements the Processing/Wiring language.  

Ultrasonic Mist Maker Humidifier, 5V Atomization Disc 108KHz Mist Atomizer DIY Humidifier with PCB, DIY Mist Atomizer Micro USB Board Ultrasonic Atomization Module for Home  

Arduino Nano 33 IoT with headers

SIM808 GSM/GPRS/GPS Bluetooth Compatible Development Board With GPS Antenna COM45 ,R17

"Nextion NX8048T050 5 inch Resistive Touch Screen Man-machine interface HMI kernel

Nextion NX4024T032 3.2 Inch display Man-machine Interface HMI Touch Screen

MOD-TCA9548A CJMCU-9548 TCA9548A 1-to-8 I2C 8-Channel IIC Multiplexer