Operation Instructions

Page 3 of 18 Revision Date: February 20, 2007
SuperDroid Robots Inc
http://www.SuperDroidRobots.Com
Assembly of the 4 Relay board:
Figure 1: TTL High Current Driver with 4 Power Relays
1. Start by laying the board out in front of you. The Label should be on the middle left topside.
Refer to Figure 1.
2. Insert all the LEDs as shown in Figure 1 in a staggered location. The long leg of the LED
should be towards the TTL Input edge of the board (they will not work if put in the other way).
Please Note: If you use the LEDs, the supplied voltage to the output will be about 10% less
than the Input voltage since it drops some voltage to ground to light the LEDs. (If
you put 12V as the input voltage, you will only get about 11 volts on the output