There is only one 1-channel UART port on the original Raspberry Pi. Once it is used for terminal debugging, no other serial device is allowed. With this shield you have additional 2-channel UART, plus 8 programmable GPIOs.
- Compatible with Raspberry Pi Zero/Zero W/Zero WH/2B/3B/3B/3B+.
- onBoard SC16IS752
- up to 16 of these modules are stackable
- integrated multi-LEDs for indication of the UART operating status
- reserved I2C control pins, allows working with other control boards
specifications
- Operating voltage: 3.3 V
- Expansion chip: SC16IS752
- Control interface: I2C
- Mounting hole size: 3.0 mm
- Dimensions: 65 x 30 mm
Scope of delivery
1x Serial expansion HAT
1x RPi Screw Package
Documentation and downloads can be found here:
https://www.waveshare.com/wiki/Serial_Expansion_HAT
