Multi USB/RS232/RS485/TTL Converter Brand_EMSL a Pi Zero and a

a Pi Zero and a LiPo battery for a completely wireless name badge

https://github

Raspberry Pi model A+ v1 (the most energy-efficient model available)

It's versatile and small

8-Inch TFT LCD Display Module combines a 320×240 ILI9341 display with a resistive touchscreen

Multi USB/RS232/RS485/TTL Converter Brand_EMSL a Pi Zero and aMultiplexer has a set of interfaces for a variety of multi function adapter plates. It supports USB, TTL, RS232, RS485 interfaces between the system conversions. What's more powerful is that it also supports one input multiple outputs, which greatly facilitates the communication between various controllers. Tip: Multiplexer board is divided into A and B interfaces. The signal can be convertered between A and B. The signal in the same interface can't