Introduction: HIGH CURRENT MOTOR DRIVER ( V 1.0 )
Want to drive some low turn - high current motors ? well you can make your own high current motor driver with some MOSFETs.
PART LIST :
2 x IRF540N
2 x IRF9540N
2 x 10k resistors
1 x diode
3 x male headers
2 x MCT2E ( or equivalent optoisolators / optocouplers )
4 x Heat Sinks
1 x DC fan ( optional )
1 x 2 pin terminal blocks
Step 1: Layout and Schematic
The schematic looks pretty simple. It has been labelled with every part and their value . The output headers have a ground pin and 2 input pins which can work on PWM too.
Step 2: Using and Basic Working
The circuit can work with or without a micro-controller. Micro-controllers can be used to give PWM inputs to the driver and control the motor speed. The first pin on the header is for input , the second is ground on micro-controller and the third is input 2 .
Why optocouplers / optoisolators ?
- Because they "isolate" the HIGH current circuit optically from the microcontroller board.
Why these heatsinks and fans ?
- The low turn motors use more than 10 amps which can create heating issues which could reduce the performance and also sometimes damage the components .
Happy tinkering !