Electronics > Electronics
Radio Receivers in RC Cars?
garriwilson:
Can radio receivers be found in rc cars?
airman00:
Umm, yeah thats what makes them Remote control :P
Its a crystal with a circuit that controls two motors directly . They are DC motors not servos! Its very easy to hack. Just disconnect the wires from those motors and connect to an H bridge, relays, or your own motors.
Going to sleep ;D
garriwilson:
Hey I have two hs-311 servos, an old 49 mhz transmitter from an old rc car. I need a receiver to make it work, but there is no 49 mhz ones so can I change the frequency of the transmitter?
Steve Joblin:
the frequency of the transmitter is controlled by the crystal. Here is an ebay listing for them... http://cgi.ebay.com/27-000-MHZ-Crystal-Resonators-HC-49-U-100pcs_W0QQitemZ290165368487QQihZ019QQcategoryZ7286QQssPageNameZWDVWQQrdZ1QQcmdZViewItem
Admin:
You mentioned you made the $50 robot right? That means you already have a microcontroller . . .
Go here:
http://www.societyofrobots.com/remote_control_robot.shtml#components
and scroll down to where it says 'Optional: Teleoperation'
Attach your 49 mhz receiver from the old car to an analog port on your microcontroller using the given schematic. Then program your microcontroller to change servo commands depending on the different analog levels.
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