# Throttle Doesnt Work

Source: https://forum.modalai.com/topic/4833/throttle-doesnt-work
Category: VOXL 2 and VOXL 2 Mini (https://forum.modalai.com/category/26/voxl-2-and-voxl-2-mini)
Tags: voxl-2-mini
Posted: 2025-10-23 16:20:47 UTC by jeremyrbrown5
Replies: 6 · Views: 1418

## jeremyrbrown5 · 2025-10-23 16:20:47 UTC

Hello

Very weird problem.

Using the Voxl2 mini. We are able to arm the drone. The motors respond to Yaw, Roll, and pitch as expected, but do not respond to throttle. We double checked the radio calibration and the can confirm through QGound that its receiving throttle, but it's not being output to the motors. We have tried multiple flight modes (manual, stabilized, altitude) and still no motor output when sending throttle. 

Any help would be appreciated 

Thanks

## Reply by Eric Katzfey (ModalAI staff) · 2025-10-23 16:26:25 UTC

@jeremyrbrown5 Can you attach a px4 log?

## Reply by Eric Katzfey (ModalAI staff) · 2025-10-23 16:27:27 UTC

@jeremyrbrown5 What type of RC are you using?

## Reply by jeremyrbrown5 · 2025-10-23 16:49:31 UTC (in reply to Eric Katzfey)

@Eric-Katzfey [here](https://review.px4.io/plot_app?log=ff1e65cc-1a13-4aba-ae02-e5dc5ca84373) is the log, and we are using the Radiomaster Nomad dualband. I will say the TX is on ELRS 3.6 and the receiver is on 3.5.3, but the Nomad's 3.5.3 is wonky.

## Reply by Eric Katzfey (ModalAI staff) · 2025-10-23 18:10:37 UTC (in reply to jeremyrbrown5)

@jeremyrbrown5 It doesn't look like there is any problem with the RC. The log shows the throttle stick being moved up. And it shows the motor actuators being set based on that throttle input. But, for some reason, the commands going to the ESC are all 0 so the motors don't spin. It kind of points to a configuration issue but I'm not able to see anything obviously wrong in the parameters. Which ESC are you using? Is this in a custom vehicle? Are you using any of the px4 parameter sets from the voxl-px4-params package?

## Reply by jeremyrbrown5 · 2025-10-23 19:51:54 UTC (in reply to Eric Katzfey)

@Eric-Katzfey Solved.... it was in turtle mode

thank you

## Reply by Eric Katzfey (ModalAI staff) · 2025-10-23 19:56:55 UTC (in reply to jeremyrbrown5)

@jeremyrbrown5 Ah, yes, that'll do it.