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Help! Ft gremlin won't arm

#1
I purchased the ft gremlin about a week and a half ago. I bound my receiver and I can see my transmitter(Spektrum Dx8e) inputs on the receiver tab. All I had to do was put the props on. But, it wouldn't arm. I got arming prevention flags 7 and 17. I am confused about what this means. Does someone know how to solve this issue?
 

ElectriSean

Eternal Student
Mentor
#3
You need to set up the channel endpoints in your transmitter using the Betaflight receiver tab as a reference. I believe it's called servo travel on Spektrum radios.