TV stand motor control

Projects General Guidance
1

Hi there!

I’ve currently got a motorised TV stand but it seems to be proprietary in nature, I’m looking to create a device to control the motions of it and present this device as an Apple HomeKit accessory.

What has me puzzled is the 5 wires used in the connection for the motor and stand.

The wires are as follows:

GND
Turn Left 5v PWM
Turn Right 5v PWM
Current Position
14v+

I’m a little confused as I believe you need GND for PWM so would the turn left and turn right share the same GND?, also there seems to be no 14v-

I’m relatively new to this and would appreciate your wisdom :slight_smile:

Thank you

2

Hi,
Welcome to the forum.

Please read the first post in any forum entitled how to use this forum.
http://forum.arduino.cc/index.php/topic,148850.0.html

Yes, both PWM will be referenced to GND.
Current position, which I assume is an output from the stand to show where in its travel the TV is, will also be referenced to GND.

Tom... :slight_smile:

3

Thank you very much!