Tools, APP Software Used etc.

KiCad 8.0

Description

FPV Head Tracking System – Receiver PCB (Large Version)

This Large Receiver PCB is a core part of a DIY FPV head tracking system, designed to receive head movement data wirelessly and convert it into precise servo motion for FPV camera pan and tilt control. The board prioritizes signal stability, long-range performance, and easy assembly, making it ideal for testing, prototyping, and reliable field use.

The receiver is built around an Arduino Pro Micro, which processes incoming orientation data received via an NRF24 RF module. For extended range applications, the design supports high-power NRF24 modules such as the E01-2G4M27D, capable of up to 500 mW RF output. With proper power regulation and a suitable antenna, this receiver is intended for long-range FPV setups.

The PCB provides standard RC servo outputs for two axes:

Pan (left–right)
Tilt (up–down)

These outputs directly drive micro servos used in the head-tracking mechanism. While basic micro servos are sufficient for functionality, higher-quality servos can be used to achieve smoother and more precise camera motion.

As a large-format PCB, this version features:

Wider trace spacing and clear routing
Easier soldering and debugging
Better accessibility to connectors and test points

This makes it especially suitable for users who prefer a robust, easy-to-work-with board during development or for permanent installations where space is not a strict limitation. Power stability is a key design focus. The receiver includes proper decoupling and regulation to ensure clean power delivery to the RF module, which is critical for maintaining long communication range and preventing signal dropouts.

Overall, the Large Receiver PCB offers a dependable and easy-to-assemble solution for FPV head tracking systems, delivering long-range wireless performance, stable servo control, and a layout optimized for reliability and ease of use.

Credit & Acknowledgement

Complete Design & Engineering Credit: RC Maker Lab (This project is shared for educational and community reference purposes)

Code

C/C++

// FPV HEAD TRACKING RECEIVER CODE  |  ALICI KODU
// BY KendinYap

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

// Servo tanımlamaları
Servo yawServo;
Servo pitchServo;

// NRF24L01 tanımlamaları
RF24 radio(8, 10);  // CE: D8, CSN: D10
const byte address[6] = "00001";  // Verici ile aynı adres

// Veri yapısı (verici ile aynı olmalı)
struct Data_Package {
  byte pitch;
  byte yaw;
  bool calibrationDone;  // Kalibrasyon tamamlandı bilgisi
};
Data_Package data;

// Son sinyal alma zamanı
unsigned long lastSignalTime = 0;
const unsigned long signalTimeout = 1000; // 1 saniye sinyal kaybolma süresi

void setup() {
  Serial.begin(115200);

  // Servo pinleri ayarla
  yawServo.attach(5);   // Yaw servo, D5 pinine bağlı
  pitchServo.attach(3); // Pitch servo, D3 pinine bağlı

  // Servoları başlangıçta merkez konumuna getir
  yawServo.write(90);
  pitchServo.write(90);

  // NRF24L01 başlatma
  radio.begin();
  radio.openReadingPipe(1, address);
  radio.setChannel(120);
  radio.setAutoAck(false);
  radio.setDataRate(RF24_250KBPS);
  radio.setPALevel(RF24_PA_MAX);
  radio.startListening();

  Serial.println("Alıcı hazır!");
}

void loop() {
  // Veri alındı mı?
  if (radio.available()) {
    radio.read(&data, sizeof(Data_Package));
    lastSignalTime = millis(); // Son sinyal alma zamanını güncelle

    // Normal veri işleme
    int yawAngle = map(data.yaw, 0, 255, 0, 180);   // 0-255 aralığını 0-180 dereceye dönüştür
    int pitchAngle = map(data.pitch, 0, 255, 0, 180); // 0-255 aralığını 0-180 dereceye dönüştür

    // Servolara açı değerlerini gönder
    yawServo.write(yawAngle);
    pitchServo.write(pitchAngle);

    // Seri monitörde değerleri yazdır
    Serial.print("Yaw: ");
    Serial.print(yawAngle);
    Serial.print(" Pitch: ");
    Serial.println(pitchAngle);
  }

  // Sinyal kaybolursa servoları merkeze getir
  if (millis() - lastSignalTime > signalTimeout) {
    yawServo.write(90);
    pitchServo.write(90);
    Serial.println("Sinyal kayboldu! Servolar merkeze döndü.");
  }
}

Schematic and Layout

Schematics

FPV-Head-Teracking-Circuit-Receiver-DIY-Circuit-Large-1536x864 (1).jpg

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Jan 17,2026

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FPV Head Tracking System – Receiver PCB (Large Version)

Published: Jan 17,2026

Standard PCB

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BOM(Bill of materials)

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PCB+Assembly

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