Cirkit Designer LogoCirkit DesignerYour all-in-one circuit design IDE Launch Cirkit Designer App

Arduino Nano RF Remote Controller with Dual Joysticks and Potentiometers

View and Edit Project In Cirkit DesignerImage of Arduino Nano RF Remote Controller with Dual Joysticks and Potentiometers

Circuit Documentation

Summary

This document provides a detailed overview of an RF RC controller circuit. The circuit includes two joysticks, seven buttons, two potentiometers, and an NRF24L01 module for wireless communication. The controller is powered by a 7.4V battery and uses an Arduino Nano as the main microcontroller. The circuit is designed for battery operation with optimized power consumption and RF communication stability.

Component List

  1. 7.4V Battery

    • Pins: +, -
    • Description: Power source for the circuit.

  2. KY-023 Dual Axis Joystick Module (2 units)

    • Pins: GND, +5V, VRx, VRy, SW
    • Description: Joystick module for user input.

  3. 8 Push Button Board PCB

    • Pins: K1, K2, K3, K4, K5, K6, K7, K8, GROUND
    • Description: Board with 8 push buttons for user input.

  4. NRF24L01

    • Pins: IRQ (not used), MOSI, CSN, VCC (3V), GND, CE, SCK, MISO
    • Description: Wireless communication module.

  5. 3.3V Regulator

    • Pins: GND, OUT, Vin
    • Description: Voltage regulator to provide 3.3V for the NRF24L01 module.

  6. Electrolytic Capacitor

    • Pins: +, -
    • Description: Capacitor for power stabilization.
    • Properties: Capacitance: 0.00001 Farads

  7. Arduino Nano

    • Pins: D1/TX, D0/RX, RESET, GND, D2, D3, D4, D5, D6, D7, D8, D9, D10, D11/MOSI, D12/MISO, VIN, 5V, A7, A6, A5, A4, A3, A2, A1, A0, AREF, 3V3, D13/SCK
    • Description: Main microcontroller for the circuit.

  8. Tantalum Capacitor

    • Pins: +, -
    • Description: Capacitor for power stabilization.
    • Properties: Capacitance: 0.000001 Farads

  9. Potentiometer (2 units)

    • Pins: GND, Output, VCC
    • Description: Potentiometer for user input.

Wiring Details

7.4V Battery

KY-023 Dual Axis Joystick Module (1st Unit)

KY-023 Dual Axis Joystick Module (2nd Unit)

8 Push Button Board PCB

NRF24L01

3.3V Regulator

Electrolytic Capacitor

Arduino Nano

Tantalum Capacitor

Potentiometer (1st Unit)

Potentiometer (2nd Unit)

Code Documentation

/*
 * RF RC Controller
 *
 * This Arduino sketch is designed for an RF RC controller with two joysticks,
 * 7 buttons, and 2 potentiometers. The controller communicates with an NRF24L01
 * module to send the state of the inputs to a receiver. Power consumption is
 * optimized for battery operation, and RF communication stability is monitored.
 * If a transmission fails, it is retried 10 times maximum. Every 5 seconds, the
 * transmitter verifies if the receiver is listening. If no confirmation is
 * received, a message saying 'connection lost' is sent.
 */

#include <SPI.h>
#include <nRF24L01.h>
#include <RF24.h>

// NRF24L01 configuration
#define CE_PIN 9
#define CSN_PIN 10
RF24 radio(CE_PIN, CSN_PIN);
const byte address[6] = "00001";

// Joystick pins
const int joy1X = A2;
const int joy1Y = A3;
const int joy2X = A0;
const int joy2Y = A1;

// Button pins
const int buttonPins[7] = {2, 3, 4, 5, 6, 7, 8};

// Potentiometer pins
const int pot1 = A4;
const int pot2 = A5;

// Data structure to hold the state of the inputs
struct DataPacket {
  int joy1X;
  int joy1Y;
  int joy2X;
  int joy2Y;
  int pot1;
  int pot2;
  bool buttons[7];
};
DataPacket data;

unsigned long lastCheck = 0;
const unsigned long checkInterval = 5000; // 5 seconds

void setup() {
  // Initialize serial communication
  Serial.begin(9600);

  // Initialize NRF24L01
  radio.begin