WirelessRC

A simple Arduino library for building wireless RC cars using the RadioHead ASK RF module.
It splits the project into two clean classes:

Class	Role	Upload to
WirelessRCCar	Receives joystick packets and drives motors	Car Arduino
WirelessRCController	Reads joystick + button and transmits packets	Controller Arduino

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Dependencies

• RadioHead — install via the Arduino Library Manager

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Wiring (defaults)

Car (receiver)

Signal	Pin
Motor A IN1	2
Motor A IN2	4
Motor A ENA (PWM)	3
Motor B IN3	5
Motor B IN4	7
Motor B ENB (PWM)	6
RF data (RH_ASK)	11

Controller (transmitter)

Signal	Pin
Joystick X	A1
Joystick Y	A0
Button	2
RF data (RH_ASK)	12

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Quick Start

Car sketch:

#include <WirelessRC.h>

WirelessRCCar car;   // uses all defaults

void setup() { car.begin(); }
void loop()  { car.update(); }

Controller sketch:

#include <WirelessRC.h>

WirelessRCController ctrl;  // uses all defaults

void setup() { ctrl.begin(); }
void loop()  { ctrl.update(); }

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Custom Pin / Speed Configuration

// WirelessRCCar(in1, in2, ena, in3, in4, enb, speed, deadzoneL, deadzoneH)
WirelessRCCar car(2, 4, 3, 5, 7, 6, 200, 400, 624);

// WirelessRCController(joyX, joyY, buttonPin, txDelayMs)
WirelessRCController ctrl(A1, A0, 2, 50);

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API Reference

WirelessRCCar

Method	Description
begin()	Initialises motor pins and RF driver. Returns false on RF failure.
update()	Checks for incoming packet and drives motors. Returns true when packet received.
setMotors(m1fwd, m2fwd, speed)	Manually drive both motors.
stopMotors()	Immediately stop both motors.
lastX() / lastY()	Last received joystick values (0–1023).
lastButton()	Last received button state (LOW = pressed).

WirelessRCController

Method	Description
begin()	Initialises button pin and RF driver. Returns false on RF failure.
update()	Reads joystick + button and transmits if interval elapsed. Returns true when sent.
lastX() / lastY()	Last transmitted joystick values.
lastButton()	Last transmitted button state.

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License

MIT