How do I drive the Cytron SmartDrive40 in PWM mode?

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How do I drive the Cytron SmartDrive40 in PWM mode?

Postby Metalmind » Thu Apr 19, 2018 9:34 pm

Hello, I am just trying to get the Cytron SmartDrive 40 to work in PWM mode with a standard Arduino Mega.

I have the DIP switches set to the following positions:

I have the inputs connected to an Arduino Mega like this:

Input 1 connected to Pin 2
Input 2 connected to Pin 26
Ground on the smartdrive connected to ground on the Mega.
The 5 volt pin on the smartdrive not connected with anything.

I then tried to run the following code on the Mega:

void setup()
pinMode (2,OUTPUT);
pinMode (26,OUTPUT);

void loop()
analogWrite (2,0); //set PWM pin to low
delay (5000);
analogWrite (2,255); //set PWM pin to high

When I connected the arduino with this code, I can observe that I do not get the Input Error (I do not see the LED flash 2 times) however, when the PWM goes to high, the motor does not spin.

I tried more experiments, and I saw that when I uploaded code to the arduino while it was connected to the SmartDrive the motor would spin, and then it would stop after the code had finished uploading. I am also capable of driving the motor using the push buttons on the SmartDrive.

Any help or assistance would be greatly appreciated. I used the Cytron 10Amp DC Motor Driver in the past and I was very happy with it.
Posts: 1
Joined: Thu Apr 19, 2018 9:19 pm

Re: How do I drive the Cytron SmartDrive40 in PWM mode?

Postby ober » Tue Apr 24, 2018 6:46 am

I don think is the problem of the SmartDrive40 since it can work with the manual/test button and there is no input error.

You can try replacing the SmartDrive40 with MD10C, see if it works?
Ober Choo
Cytron Technologies Sdn Bhd
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Posts: 1409
Joined: Wed Apr 15, 2009 1:03 pm

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