three wire throttle

[eprom]

I was wondering if someone could help me figure out what is coming out of the three-wire throttle that hooks into the receiver?

i'm assuming the wiring is standardized, so what are the red, black and white wires used for? what type of waveform would I see if I connected them to an oscilliscope and opened the throttle on the transmitter?

Thanks

[rccardude04]

The frequency on the "signal" or white/yellow/orange wire will change depending on throttle application.

-Eric

[adamzty]

Red - Positive voltage
Black - Negative voltage
white/yellow - signal

the signal wire tells the servo what to do.

[eprom]

so, I guess if the throttle is not engaged, the frequency should be zero? What should I expect for a maximum frequency with the throttle fully engaged? Also is the waveform just a simple sinewave? or squarewave? What is the typical peak-to-peak value? :confused:

[rccardude04]

There is always a frequency except with Spektrum aircraft radios, where the throttle channel is dead until the transmitter comes online.

I would imagine it's a sine wave but I'm not 100% certain. You should be able to get values from any of the manufacturers... Futaba, Hitec, JR, Airtronics, etc.

-Eric

[kschauwe]

All about Radios:
http://www.torreypinesgulls.org/radios.htm

[rccardude04]

I always wondered why those Traxxas AM radios seemed to have better signal than some of my better FM radios. That's why. :D

Good read. Thanks for the link!

-Eric

[eprom]

just to be clear...I was refering to the throttle that connects the ESC to the reciever. Not the signal for the steering servo.

I'm still not certain what is exactly coming out of the throttle, from the reciever connection.

[adamzty]

oh, on nitro theres a servo for throttle, electrics have esc for throttle. They both will get the exact same signal from the receiver. Is your reciever borke or something, or are you just wondering?

and thanks for the link!