RC Servo to 27 MHZ receiver connection

Using Arduino Project Guidance
1

Hi Guys,

I have hacked open a 27mhz RC car which had two dc motors and trying to interface the receiver with the couple of servo motors and use the transmitter to control the servos. Due to limited knowledge in electronics Im not sure how to achieve this. I was able to measure the voltage on each channel (back/forward, left/right) varies from +6V to -6v. Any help would be highly appreciated. Thanks.

2

"a 27MHz RC car"? Most things on 27MHz are toys and it is very likely that the transmitter does not produce anything like the right sort of signals to drive servos. What it does produce is anyone's guess, particularly since you've given no details about the RC car, receiver or transmitter.

BTW does this have anything to do with Arduinos?

Steve

3

Thanks for your reply Steve.

The receiver has "jG-403R-0402" printed on it and transmitter has nothing. Its a cheap $10(AUD) rc car. I did google the receiver but couldnt find anything.

The joystick produces the varied voltage on the receiver which is all I found. I was thinking if I connect it and the servo to Arduino will I be able to get the signal to the servo from transmitter (my electronics knowledge is limited).

If this is not possible I will go to 2.4 GHZ transmitter receiver and there are plenty of tutorials online about that.

4

From your description, it sounds like the receiver doesn't output sevo control PWM pulses but goes straight to DC motor control.

I'd bin it

5

Converting +/-6V signals into something that can drive a servo is not impossible but it will be a bit fiddly. First you need to convert it into 0-5V which is all an Arduino can take.

And then you can treat that as though it was the output from a potentiometer and borrow some code from the Servo/Knob example to send signals to the servos.

It's up to you to decide if it's worth the effort.

Steve

6

AWOL, thanks for your comment, i have been thinking along the same line.Thanks.

On the other hand, Steve, what you said would be good for my learning electronics. I will google and try to find some guide. Any input on this will be very appreciated. Thanks.