Web circuit diagram of the receiver in 27mhz toy car is shown in fig. Building hobby rc race car circuit diagram, electronic design and schematic pcb layout design Web  it's never too late to foster a strong love for radio controlled vehicle. Web  from the above circuit diagram, the raspberry pi gpio pins 18, 23, 24 and 25 have been connected with l289d driver inputs 2, 7, 10 and 15 respectively. A remote control circuit is a device that you can operate with remote control from a.