I am wanting an op amp that can act as a voltage follower. Essentially the project is speed control of a motor and since PWM is being used, the following circuit was going to be implemented: Essentially just a RC filter to get the analogue signal, then a voltage follower so that the motor can draw the required current it needs since the arduino can only output say 20mA. (Ignore the output 1k resistor)
As i do not know that much about opamps and what to look for for when choosing them, i was wondering if i could get some suggestions or even possibly a standard op amp that will work?
The supply to the op amp will be 5V, and preferably a component from Jaycar due to the time limit?