Why not use those 27mhz toy remote?

[redboat219]

Pardon my ignorance on electronics but I've seen DIY controllers made using an Arduino coupled to a 2.4ghz module. So why can't one use the 27mhz RC transmitter from those cheap toy cars instead.

I'm thinking of something like those old single channel controllers. instead of you pressing a single button in sequence the arduino in the transmitter will be the one to interprets your command inputs into morse code like blips that are then transmitted by the 27 mhz radio which are then picked up by the onboard receiver and decoded by an arduino.

[Sam Victory]

Redboat,

Of course you can use Arduino, as it is a micro control module. For any frequency that's your choice as long as it is legal for the surface frequency in your country. For your another question, why can't we use 27 mhz toy transmitter, it is just because they just use infrared remote control.The drawbacks are also obvious: the remote control range is too short, and the fact that you have to point the antenna at your remote control toy. Traditional RC model plane transmitters have a high frequency circuit section where the ppm or pcm signals are sent out at high power to increase the RC distance.

RF circuit for futaba FM radios:


V

[type7]

How about rf noise, interference and range?

[redboat219]

I don't know about RF noise or interference, as I said, not electronically savvy. As for range, I'll be happy in 10-30 feet range. As David said, if you can't see it you can't drive it.

I think this is what the guy who made those Lego submarines did https://brickexperimentchannel.wordp...-0-radio-7-10/

[redboat219]

Someone over at the AMS range tested one of these radio submerged at 0.5m (1.5ft)

[cheapsub]

Is on or off motor control, a old parkzone 27MHz will be way easier.

May be one of these days, someone comes up with a voice command system, so we could use CB radio calling out command, CB gone FM recently.

is time to let go some of my "back up" system, any one interested.
Get one too many Frankenstein transmitter.