Description: This is a RS232 serial port general purpose I/O control board. This control board is built in a AT89S52 microcontroller and all the I/Os pin (P0,P1,P2) are brought out to header. You can easily send a command via the serial port to control the status (1 or 0) of the I/O port.
Features:
- Easy-to-use.
- P0,P1,P2 are brought out to header.
- Total 24 outputs.
- 8 LEDs indicators on P1.
- RS232 communication.
- Powered by +5VDC.
- Compact design.
Documents: Schematics Com Test Tool
How to use: Command format: 61 xx yy 61
xx: 00-02 (00: P0, 01:P1, 02:P2)
yy: 00-FF (value of output)
Example: If you want to set P1 to FF, send the command: 61 01 FF 61
