My project consists of a MC33926 Motor Driver Carrier, Arduino Pro Mini, motor, and video monitor.
The Arduino sends PWM to the controller to drive a small 1 amp brushed motor. The video monitor watches the process.
I have a 12 volt battery powering everything, the monitor takes 12v, the arduino receives 12v and regulates it to 5v which is shared with the motor controller logic. I am using a 7805 to drop the voltage to the motor side of the controller for the motor power.
My problem is the monitor is getting horizontal lines and I have tracked it down to the 12 v power line. I have put caps on the motor, twisted the wires, etc. Nothing was working until I disconnected the 7805 from the 12v battery and used a second battery sharing the same ground. All the noise went away, so now to find a solution that allows me to use only one battery.
The Arduino sends PWM to the controller to drive a small 1 amp brushed motor. The video monitor watches the process.
I have a 12 volt battery powering everything, the monitor takes 12v, the arduino receives 12v and regulates it to 5v which is shared with the motor controller logic. I am using a 7805 to drop the voltage to the motor side of the controller for the motor power.
My problem is the monitor is getting horizontal lines and I have tracked it down to the 12 v power line. I have put caps on the motor, twisted the wires, etc. Nothing was working until I disconnected the 7805 from the 12v battery and used a second battery sharing the same ground. All the noise went away, so now to find a solution that allows me to use only one battery.