Order Number: UT-702203-WH
Product Name: Crux35 Hd
Brand: HappyModel
I’ve just opened up the box for the crux35 that I bought from you and plugged it in to betaflight to set turtle mode and the buzzer.
The drone will not arm and on betaflight it’s saying the front right motor isn’t working.
Betaflight showed me the problem
Sorry to hear about this.
Its great to see that you have tried to test thee motors via the betaflight motors test GUI, which would suggest that there is either an issue on the ESC itself, or with the FC/ESC config.
Can I ask if you have tried to update any firmware on the FC/ESC? and can you also just manualy double check the 3 motor wires are connected properly to the FC?
I will then pass this info back to Happymodel to offer their suggestions (either a replacement FC, or a specific firmware setting to change/check)
How would you rate our customer service?
Kind Regards
Alex
Unmanned Tech Support
Join our community at dronetrest.com, or on Discord.
Hi Alex.
No I haven’t tried to update the firmware on the esc or fc as I’ve never done that before.
I’ve checked the three wires to the motor and they look fine.
What can I do next mate?
Rory
I am just waiting for some feedback from Happymodel, but for now if you can try use the ESC-configurator.com tool and read thee ESC settings and double check you have telemetry enabled on that ESC #2 that may be the cause of the issue.
just make sure you disconnect betaflight before you use that tool, otherwise the ESC tool will not be able to read ESC settings since betaflight GUI will be using the serial connection.
Kind Regards
Alex
Unmanned Tech Support
Join our community at dronetrest.com, or on Discord.
Hi Alex
Did you receive the last email about the ESC Configurator?
It’s saying it’s bounced back??
Hi Alex,
I’m not sure if my emails are going through
Rory
Hi Alex,
Hope you’re well?
Do you have any updates yet?
Thank you
Rory
Hi we are getting your emails, but for some reason not thee attachments, As this is the issue apparently:
My suggestion would be to upload the images/video to imgur.com and share the URL here so we can check them as the will usually downsize/compress thee videos/images for you. The only limit is videos need to be less than 60 seconds long per clip.
Hi,
I don’t think you need anything else, I would like to get a replacement.
Can you tell me the next steps please?
Kind regards
Rory
Hi Alex
I would like to resolve this as soon as possible, please don’t make me wait 24 hours for each reply.
I buy goods from you guys in good faith and this is the first problem I’ve had.
I want this sorted out.
Thank you
Rory
Hi Alex
Can I have an update on this please?
Thank you.
Rory
Hi Alex,
I’m not hearing back from you, I want to request a refund now, I’ve been sold a product that doesn’t work and you are taking to long to respond to my emails to resolve this issue.
I’m rejecting the item under the consumers rights and if you’re unhappy with that, I can get visa involved.
I expect a response about this ASAP.
Thank you
Rory
Having had a look at the screenshot, it would seem that the firmware flash has failed on the motor #2? Have you tried to reflash firmware onto that as I believe this will solve the issue.
Otherwise if you do not wish to test that you can return it back for us to check, if we find there is a hardware fault then we can get this replaced/refunded for you as per our terms, but if its a firmware/config issue then this would not be considered faulty since these items all run third party open source firmware not controlled by ourselves or the manufacturer. But either way we should be able to get the issue resolved for you, in the case of a config/firmware issue depending on the actual issue and time to resolve we may need to charge a service fee for this but will let you know before hand so you can decide to proceed with this or not. Something like an ESC reflash we would not charge for as its a 5 minute job.
If you do wish to return it back you can do so via this link - Returns - Unmanned Tech Shop (select faulty return, skip troubleshooting)
I would also like to apologise about the delays on our side, we are a small team and our primary support person has had some medical issues and been off work all week, I appreciate that isn’t an excuse for slow and poor service, but just wanted to let you know as often we find customers assuming we are a much bigger company than what we are, today there are only 3 of us in the warehouse…
Kind Regards
Alex
Unmanned Tech Support
Join our community at dronetrest.com, or on Discord.
Hi,
Thank you for your email
I understand if you’re short staffed.
I will return it and ask for a refund as I have not used the item and it came faulty, I haven’t flashed any new firmware to the drone as I shouldn’t have too.
Kind regards
Rory
Hello Rory,
Thank you for providing us the tracking info. We will process your refund once we receive the parcel.
We also appreciate your patience as we work through some delays due to limited staffing.
If you have any other questions, just let us know! 
Best,
Isel 
Unmanned Tech
Hey guys,
Not a problem at all.
If you can do a straight replacement? I’ll be happy with that, I was a bit stressed and hasty when asking for a refund, I just don’t what that drone as it came out the box fault.
Hope you can understand?
Kind regards
Rory
Hello Rory,
Alright, noted on this. We will let you know once parcel is received and I’ll inform our warehouse team.
Best,
Isel
Unmanned Tech
Awesome, thank you so much!
