RC India

Hi! I have started facing a problem with my quad copter. It loses the radio link completely after a few seconds of the start.

I'm using an Arduino Mega coupled with a ITG3200 + ADXL345 and running the Multi Wii 2.1 firmware on it.
For the radio control I have a Sanwa SD6G and the paired RX-600 receiver bought from RCDhamaka.

The entire setup used to work great earlier. I had to keep it all packed for 3 months as I was stuck up with work and now when I tried to get the thing working, this new problem cropped up!  :(

Any heads up on what should be done?  :headscratch:

First of all, have you checked if the problem is at the receiver level or the quad level, by connecting a servo or a motor alone directly to different channels in the receivers, thereby keeping the quad controller/arduino out of the equation ?

@Anwar sir: Yup, just checked the radio by putting up a servo motor on all the channels one by one. It worked perfectly!  ;D

For the controller side, I checked up all the controls on the Multi Wii configurator. The sensors and the radio outputs are as they should be!  :headscratch:

Two things that I'm not really sure about are:

1. The receiver antenna wires are slightly bent. Considering that they are optical fibres, bending could be a potential problem for range. But then the quad was not even 10 feet away when the control was lost.

2. The receiver was positioned around 3 cms away from two ESCs. Could magnetic interference be causing a problem?

Did you try re-flasing your setup with multiwii v2.1?

Yup, I did!   :(

First of all, antenna wires are not "optical fibres".  And them being slightly bent (alone) should not be a problem.  You would get maximum range if you keep the thinner tips on those two antennas at right angles to each other though.

Seems like we need a bit of clarification.

1.   Does this happen when the quad moves away from you only ?  Does this happen even when the transmitter is  close to the quad ?

2.   Does this happen consistently (ie, every time you try flying) ?

You can try moving things around, and re-wiring... this has helped in the past on some issues. Try to keep the high current pulsating stuff (ESC to motor wires) away from the receiver/antennas. But then you said it was working fine earlier, so unless you made changes, I am not sure.

@Anwar sir: Checked everything! Reverting back to Multi Wii 2.0 code eliminated the problem. Maybe I'm doing something stupid with the new code!  :banghead:

For now, I've shifted to the KK 2.0 FC that i bought from Adiboy!  ;D

KK FC worked almost out of the box!  :salute: Let's see how it flies tomorrow!  :)

hello everybody,
i have started quadcopter with sanwa sd-6g remote control and kk multicopter board v5.5..
has anyone used it?
actually i dont know how to configure my sanwa with quadcopter..means what are the setting to be made?
can anyone help me? :help: ???