ultrasonic sensors from Cybot
I'm trying to understand this sonar-board from my old cybot robot, but I think I will need a little help :
- If I'm correct I should put a voltage on the transmitter sensors for a short period of time (100 ms?), then read in the value of pin 2 and 3, right?
- What voltage should the transmitters get? 5V?
- I do not know which are the transmitters and/or the receivers : on 2 sensors there's a mark : "2F" and on the other 2 it reads : "2H", but which are which?