's HAT
1. 4-channel relay module: This module is able to control various appliances and other equipment with high-voltage and high-current. It can be controlled directly from Raspberry Pi's GPIO pins.
2. Multi-function expansion board: This board comes with a variety of interfaces, including UART/RS232, I2C, SPI, USB and more. With it, you can easily expand the functionalities of your RasperryPi.
3. 4K HD LCD module: This module is equipped with a powerful display controller and supports resolution up to 4K.
4. Reversible OLED display module: This module features an adjustable 0.95-inch OLED display with a wide viewing angle and great brightness.
5. NFC reader/writer module: With this module, you can easily configure and read/write NFC tags and cards with your Raspberry Pi.
6. IR receiver module: This module can receive infrared waves from remote controls and recognize the corresponding signals.
7. USB to CAN module: This module adds USB support to the CAN bus and is perfect for communication applications.
8. RTC/memory module: This module has a built-in real-time clock, SRAM, and backup battery to keep your Raspberry Pi properly timed and powered when it is powered off.
9. EMS expansion module: This module adds multiple interfaces to your Raspberry Pi, such as GPIO, ADC, PWM, I2C and UART, making it ideal for embedded applications.
10. Analog expansion module: This module adds an 8-channel analog to digital converter to Raspberry Pi and is perfect for measuring temperature, humidity, light, and other parameters.