Hello (EZ_Robot) World!
As an introduction, my name is Chris. I learned about EZ_Robot a few years ago, when my brother started experimenting with a robot project which he has since almost abandoned. So I've decided to jump on board and get involved and help him continue with it. My experience in programming is limited to a High School class in the BASIC language back in 1980, and in the early 90s I took a one day course in HTML. My brother has only learned what he taught himself from the EZ_Robot website. While I have watched a few of the tutorials, and plan on learning from more of them, so far they seem to be geared specifically toward the indicidual robots sold by EZ_Robot. (If there are tutorials on scratch building, I haven't found them yet.) Our robot is going to be somewhat unique, so I have some very basic questions to begin with that I have not seen covered anywhere yet. First of all, our Robot is going to be large and heavy. It will be powered by an automotive battery and be running (comparatively) heavy duty Motors instead of servos. (i.e. windshield wiper motors and power wheelchair motors.) The amperage needed will be too much to run directly through the EZ_B board, so our plan is to run the 12 volts right from the power source to the motors, and switch them on and off using Automotive relays controlled by the easy board. So my first question is, would there be any better suggestions then simple Automotive relays? I know those would turn the motors off and on, but I would like to use the pwm feature. Could I do it using relays or not? I was thinking of maybe having the easy board turn servos that would rotate potentiometers controlling the voltage to the motors instead of 'on/off' relays, but I've been told that pwm is better than voltage control for speed of a DC motor.
I'm going to have more questions later, but before I even start I need to figure out this step. Any input would be appreciated. Thanx in advance.