# Extension board

Source: https://forum.modalai.com/topic/1932/extension-board
Category: General Questions (https://forum.modalai.com/category/2/general-questions)
Posted: 2023-03-10 17:48:54 UTC by Jose Alfredo Rosas Cordova
Replies: 1 · Views: 554

## Jose Alfredo Rosas Cordova · 2023-03-10 17:48:54 UTC

Hello everyone:

I am planning on adding a gimbal for my drone for that I would need either another serial port or PWM capabilities. I found [this](https://www.modalai.com/products/voxl2-io?variant=40610514206771) I/O board for the VOXL 2. I wanted to know if this could be used to control a gimbals using PX4 using the PWM outputs. I read the docs and it seems to plug into the J19 connector where the GPS and spektrum receiver plug in on the flight deck. Could I modifiy the connector to use this board alongside the GPS as I can connect the receiver to the expansion board?

Thanks in advanced :-)

## Reply by Vinny (ModalAI staff) · 2023-03-10 18:17:54 UTC

Hi @Jose-Alfredo-Rosas-Cordova 
Yes, absolutely.
That is one of the use-cases to have this along with GPS/Mag/RC.

These cables are all related to those functions and can help you make whatever custom adapter you may need:
https://docs.modalai.com/cable-datasheets/#mcbl-00061
https://docs.modalai.com/cable-datasheets/#mcbl-00064
https://docs.modalai.com/cable-datasheets/#mcbl-00070

Note, MCBL-00070 is brand new so we'll have the purchase link up soon.

This guide also tells you some tips on how to modify these cables to your needs:
https://docs.modalai.com/cable-userguides/
So, if we do not have exactly what you need, you can easily modify some others to get you there.

Hope this helps!
Thanks