User`s manual

ROBOT . HEAD to TOE

Product User’s Manual – SC08A

5.3 Connecting SC08A to Microcontroller

Another concern of user is for embedded system to control servo motors. For microcontroller

to interface with SC08A, the minimum requirement will be TTL UART (Universal

Asynchronous Receiver and Transmitter) and 5V supply. 5V will not be an issue since most

of embedded or microcontroller system is 5V powered, tapping the 5V from host system will

be reasonably easy. As for UART, a minimum of Transmit pin is required to send command

to SC08A.

1. Please refer to the sample schematic to interface SC08A to microcontroller. Following

sample schematic shows PIC16F877A interface to SC08A. No restriction to what type or

brand of microcontroller can be used, as long as it has UART peripheral. Schematic

above show sample schematic to interface SC08A to SK40C.

2. Although SC08A come with Tx pin, it is an alternative for user to connect if positioning

report is needed. Thus minimum wires from the host, microcontroller to SC08A are 3

wires. Please use proper connector to connect the wires. Following figure show an

example of wire interface to SC08A. It uses 4 ways 2561 socket. Please ensure the cable

is not connected in wrong direction, wrong connection will spoilt SC08A and worst the

host or microcontroller. Tx and Rx pin of SC08A should be cross connected to Tx and Rx