Pro 120's and dmr 202 interface

hi,

i have a problem with my heavys electronics it was working fine yestoday until last night when i was driving it around and all of a sudden it stopped and when i power it up again it moves a tiny bit then completly stops and doesnt do anything now i have tested the conections with a meter they are all fine and tested the reciever with a servo to see if it works and thats fine, now if theres voltege going through the system what could be wrong?

i tested the dmr 202 interface from 4qd and when i power the system up it works for a tiny bit so the interface works fine but when i take the main 4qd conectors out the motor turns for that side but when i plug it back in again it does completly the same moves a tiny bit then stops

anyone have this happen to them before?

Hi Kenny,
I have experienced a similar problem with my roboteq speedo.

This might sound rather silly but the problem was more comical than technically complex, my batteries had charged out. They had enough power to start the system up, but they couldn´t run it.

If my post is of no help to you I hope it can give yuo a quick laugh anyway :)

//Mrten (bot builder of Sweden)

thanks it works now :)

hi, i bought this speed controller off kenny, and am now a little worried as I am experiencing the same problem - its fine unless you ask for more than about 20% throttle at which point both controllers shut down and wont respond unless you kill ignition and repower.

I can think of 3 possibilites

1. Radio interferance with higher rpms
2. Incorrect settings/ current protect?
3. Ive been sold faulty speed controls (unlikely he said they worked, but I cant rule it out after seeing above message)

any ideas?

ps. that is fresh batteries - open terminal voltage is 26V

James