Problem with my Devantech MD22 Motor Driver

[mhalde]

Hi all,

I’m trying to control a Devantech 24v motor with MD22 motor driver without success: the motor doesn’t turn at all.
As you can see on the picture attached, a fujaba receiver is connected to the MD22 settled in RC Servo mode (dip switch on-off-on-off).
The outputs M1 are used to drive the motor, and the signal (channel #2) of the receiver is connected to the SCL input of the MD22.
At the terminal screws, my multimeter have mesured 5 volts at the input terminal and 24 volts at the output terminal. So, power supply is good. Also, i tested my receiver alone and he works well.
Do you know if the MD22 motor driver are compatible with the Devantech 24v motor ? Because i can’t see voltage at the M1 terminal screws.

Thank you for your help.

[scharette]

Hey,

@mhalde

I’m trying to control a Devantech 24v motor with MD22 motor driver without success: the motor doesn’t turn at all.
As you can see on the picture attached, a fujaba receiver is connected to the MD22 settled in RC Servo mode (dip switch on-off-on-off).
The outputs M1 are used to drive the motor, and the signal (channel #2) of the receiver is connected to the SCL input of the MD22.
At the terminal screws, my multimeter have mesured 5 volts at the input terminal and 24 volts at the output terminal. So, power supply is good. Also, i tested my receiver alone and he works well.

We’ve contacted the manufacturer concerning your issue.

@mhalde

Do you know if the MD22 motor driver are compatible with the Devantech 24v motor ? Because i can’t see voltage at the M1 terminal screws.

According to the manufacturer product page, it should be compatible with up-to 24 V DC motors. Here’s a direct quote:

@manufacturer

The H-bridge has a rating of 60v allowing motor voltages up to 24vdc.

We will post again here once we receive a reply.

Sincerely,

[scharette]

Hey,

Here is a copy of the feedback from the manufacturer:

@manufacturer

The board monitors the servo pulses and if either channel doesn’t receive a good pulse the board stops the motors. If the customer just wires a link between the two inputs (so both channels see a valid signal) I think it will work.

Let us know if this works for you.

Sincerely,

[mhalde]

It’s right, nice catch!

Putting signal on both channels (SDA and SCL input) has solved my problem.

Thank you for the follow-up.