how to give specific voltage to arlo robot using propeller board
vaibhav
Posts: 25
in Propeller 1
i have arlo robot and I want to excite robot with some specific voltage using the propeller board. Robot is having 12v dc motor and suppose i want to give 11v how can i do that?
Comments
Is it an Activity Board? Must ask the purpose of the 11 volt so we may answer better. And do you have a DHB-10 installed? Based on your past questions, I think so.
Yes, sort of. You would pulse width modulate (PWM) the 12V going to the motor.That provides a better method of controlling the motor than controlling the actual voltage. By turning the voltage on and off at a high frequency (100 to 1000 or more times per second) the speed of the motor can be controlled to go from 0 to it's maximum speed.
see theimage below for reference.
PWM control is really the best option for motor control, as described by another poster.
If you really want to control the voltage you can use a switched power supply module controlled by a digital pot/Propeller 1 configuration.
Some details in the thread below;
http://forums.parallax.com/discussion/170066/using-prop-as-solar-panel-mppt-controller-via-adjustable-switchmode-power-supply#latest