# Sentinel HITL

Source: https://forum.modalai.com/topic/4310/sentinel-hitl
Category: Development Drones (https://forum.modalai.com/category/44/development-drones)
Tags: sentinel
Posted: 2025-04-01 21:45:21 UTC by jmltt
Replies: 2 · Views: 1377

## jmltt · 2025-04-01 21:45:21 UTC

Will these instructions work for a sentinel dev drone? 

https://docs.modalai.com/voxl2-PX4-hitl/

Is the J18 port exposed? Specifically for sentinels with the mircohard carrier board add on

Also, does modalai sell the FTDI cable I would need to run HITL?

Thanks

## Reply by Eric Katzfey (ModalAI staff) · 2025-04-02 16:54:49 UTC

@jmltt Yes, those instructions will work. But getting access to that UART is probably the most challenging part. I would purchase one of these: https://www.sparkfun.com/usb-to-ttl-serial-cable.html (or equivalent 3.3V cable) and this adapter https://www.sparkfun.com/breadboard-to-jst-ghr-04v-cable-4-pin-x-1-25mm-pitch.html. That combination has been working well for me.

## Reply by jmltt · 2025-04-04 15:55:40 UTC (in reply to Eric Katzfey)

@Eric-Katzfey Awesome, thanks for the feedback!