I've just purchased a couple of Maxbotix's Sonar products (EZ1 x2 and EZ3 x1). I'm planning a fun project messing about with my radio controlled-car (we're trying to make it semi-autonomous). My idea is to place two of the sensors on the front of the car (one on the front-left, one on the front-right) and another on the rear.
The goal is to react to obstacles in the way of the car and act accordingly.
So far, in testing on the bench, I've found that the sensors are quite 'noisy' - i.e. pointing a sensor at a wall while keeping it in a fixed location may yield slightly different results per scan, but I suspect that could be 'dampened' by taking multiple readings and averaging.
My main query here is in my planned implementation. Due to the fact I'll be using three sensors on the same frequency, I'm guessing the best way to go is to power up each sensor individually, get a reading, power it down, then cycle to the next sensor, and so on.
Does this sound viable? To control power to the sensors, I was just planning to use 3 digital pins to connect to +5V on the sonar boards and then set them to high/low accordingly.
Wondering if anyone else has done this before and if they can offer any insight/experience?