Multiplexer is a multi-protocol converter which is composed by multiple interfaces for using controller communication. Multiplexer supports conversion interfaces among USB, TTL, RS232, RS485, and allows to have one input and multiple outputs. It's more convenient for many kinds of controllers to communication. Power SupplySupply Voltage is 5V ，and is divided into two way. - Via Micro USB data wire.
- Any pin 5V.
Note: please do not plug two or more 5V to aviod to burn the chip. And, do not connect 5V if already connected from Micro USB.
PIN Function DescriptionPoints to note:Multiplexer board is divided into Area A and Area B. Area A includes Micro USB、ATTL and A232 interfaces. Area B includes BTTL、B232、B485 interfaces. The signal can be converted between A and B. The signal in the same area can't be converted. For example, ATTL can't be converted to A232, but it can be converted to B232. Only one input in the same area, but it allows to have multiple outputs. For example if micro USB interface in A is input multiplexer can be allowed to have 232、485 and TTL as outputs. Indicator：- POWER: power indicator
- AR->BT: The interface in A as input, the interface in B as output
- BR->AT: The interface in B as input, the interface in A as output
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