Hi,
I am having trouble using a Maxbotix EZ1 sonar with the Axon II.
I use that sonar with its analog output pin. In fact I connect the sonar directly on one of the ADC header making sure the ground is connected to ground, power to power and signal to signal.
When I run the program, the sonar always output the same value; 12 cm (very small value, close to the minimum). I was hoping it was a software issue but it is not.
In fact, the sonar works perfectly, when connected to the same ADC pins, as long as it is not powered from the 5V regulated supply (middle pin). If I power the sonar from an external regulated supply and I connect only the ground and signal pins to the Axon then everything works fine (in fact I the ground pin of the sonar is attached to both ground from external power supply and ground pin on the ADC header on the Axon)
As per the spec, the 5V regulated power on the Axon can draw up to 1.5A. So I very much doubt the Sonar uses more than that!
So is this normal ? If not what could be the problem ?
Best regards.
François