↓↓↓ Complete description, time index and links below ↓↓↓First we have a look at the module. The addresses of the sensors are 0x1E and 0x0D respectively. I. I have added a QMC5883L and am only using the X axis for compass. Overall, the Matek M8Q-5883 GPS Compass Module is an outstanding investment for anyone looking to take their drone or autonomous vehicle to the next level. So I. Calibration is a two-step process. align_mag_pitch=1800. 0x0. He told you "Go West, young maker!" - but you don't know which way is West! Ah, if only you had this triple-axis magnetometer compass module. 0 out of 5 stars Not compatible with Adafruit's library (use QMC5883LCompass library by MRPrograms) Reviewed in the United States on January 18, 2020 Verified Purchase {"payload":{"allShortcutsEnabled":false,"fileTree":{"src":{"items":[{"name":"QMC5883LCompass. This datasheet provides the technical specifications, pinout, and application examples of the QMC5883L module. This voltage shift is the raw digital. It is absolutely necessary to calibrate the magnetometer in its final mounting and position. and I even can't find more Arduino+QMC5883L code examples. Step 1: Run Calibration. High sensitivity 18x18mm GPS patch antenna, low power consumption, strong signal, lightweight. 3-8 Gauss3-Axis Digital Compass IC HMC5883L The Honeywell HMC5883L is a surface-mount, multi-chip module designed for low-field magnetic sensing with a digital interface for applications such as low-Calibration with scale matrix and bias vector, fixing i2C glitches. Usage example: import raspy_qmc5883l sensor = raspy_qmc5883l. All that is different is the library required to interface to the chip. mprograms / QMC5883LCompass Star 54. This ASIC is equipped with high resolution HMC118X magneto-resistive sensors and a 12-bit ADC. QMC5883L Compass is a Arduino library for using QMC5583L series chip boards as a compass. The primary components for this circuit are: Arduino Mega 2560 R3 and HMC5883L. /** PID Basic modified for steering by 2 motors QMC compass heading added *****/ #include #include QMC5883L compass; //setup timer to regulate serial prints const. I have designed a unit for our RV that reads several sensors and displays driving, leveling, distance to front objects, engine and atmos conditions, etc. The sensor converts any magnetic field to a differential voltage output on 3 axes. 5 mm, small size and lightweightA tag already exists with the provided branch name. Aug 21, 2021 at 15:27. 2. 0 out of 5 stars Not compatible with Adafruit's library (use QMC5883LCompass library by MRPrograms) Reviewed in the United States on January 18, 2020. . Hi! I have recently purchased a QMC5883 magnetometer and I am having some trouble getting it to work. Step 1: Run. Here an Arduino UNO is linked to an HMC 5883L digital compass via an I2C serial bus. The values used for setMode can take the following values: Mode : Mode_Standby / Mode_Continuous ODR : ODR_10Hz / ODR_50Hz / ODR_100Hz / ODR_200Hz ouput data update rate RNG : RNG_2G. Some magnetometers measure a magnetic field’s direction, strength, or relative change at a particular location. There is a 2. The HMC5883L compass module can be addressed via I2C, like many other sensors. Just select the relevant library and use the code below for calibration. Hi, When I am compiling the code of QMC5883L, found that's a kind of complex as the code attached, not like the HMC5883L code seems simple, such as "#define OSR 0b00 " etc. Magnetometers don't work as compasses, "out of the box". The iFlight M8Q-5883 GPS comes with an integrated QMC5883L compass module, built-in TCXO crystal, and farad capacitor for a faster hot start, additional front-end LNA and many other features! The only function it is used for in this application is to determine the robot's current heading relative to magnetic North. For more details, please refer to Arduino PLC IDE documentation. Hi there, Im very new to arduino. Some magnetometers measure a magnetic field’s direction, strength, or relative change at a particular location. ACROBOTIC QMC5883L Triple-Axis Compass Magnetometer Sensor Breakout Board GY-273 for Arduino Raspberry Pi ESP8266 GY273 | HMC5883L EOL Replacement: Amazon. with. 1 × QMC5883L Compass Module Available for a few dollars from Ebay. Locate the included calibration sketch under EXAMPLES > QMC5883LCOMPASS > CALIBRATION. 16 EUR. - Calculating Azimuth. For example, a compass is a simple magnetometer. This maximizes the position availability, in particular. Download the library file: QMC5883L Compass library . He told you "Go West, young maker!" - but you don't know which way is West! Ah, if only you had this triple-axis magnetometer compass module. Ensure that your QMC5883L chip is connected. This tutorial will get you started on using this sensor, with code and wiring diagrams. Included a calibration routine in. Datasheet-QMC5883L-1. XD I'm building a project using an arduino DUE along with the GY-87, which is a 10Dof IMU. Calibration is a two-step process. QMC5883L Compass is a Arduino library for using QMC5583L series chip boards as a compass. solving hangup of the sensor (in continuous mode) enhancement. {"payload":{"allShortcutsEnabled":false,"fileTree":{"":{"items":[{"name":"QMC5883L Datasheet 1. - Calculating Azimuth. mount 16 -pin l eadless chip carrier (LCC). . Add Tip Ask Question Comment Download. New features - Wolf V1-V3 and Apex OSD. DRDY (DataReady): When the output value of the sensor is ready, an interrupt occurs in this pin. The HMC5883L includes our state-of-theart, high-resolution HMC118X series magneto-resistive sensors. This sensor is very simular to the HMC5883L sensor and is oftern found as a knock off replacement. Hi everybody, First of all, I hope I am in the right forum. 3-Axis Magnetic Sensor QMC5883L The QMC5883L is a multi-chip three-axis magnetic sensor. What am I doing wrong? Maybe set the parameters manually? UPDATE 01. For example, a compass is a simple magnetometer. (I have that Idea from the BME280 library from GitHub). Problems with GY-271 magnetometer (HMC5883L != QMC5883L) #68129. GPS is a nice unit. The more rounds you do, the better results you will. This breakout board makes the HMC5883L easier to interface with a microcontroller. Output Interface: I2C. Improved 3D. The GY-271 compass module [ also known colloquially as HMC5883L, but is in fact a QMC5883L - made under licence ] works 'out of the box' with the ESP32's I2C interface. Plug a monitor, keyboard, and mouse into your Pi, then turn it on by plugging in the battery. pdf","contentType":"file. Locate the included calibration sketch under EXAMPLES > QMC5883LCOMPASS > CALIBRATION. The module size is: 16mm*18mm. This is probably the most complicated step in the project. pdf","contentType":"file. Connect Vcc to +5V and ground to the ground pin. Sensors. Pastebin. Step 1: Run Calibration Sketch ; Ensure that your QMC5883L chip is connected. GY-271 Module has 5 pins. Step 1: Run Calibration Sketch. HMC5883L is a 3-axis digital compass used for two general purposes: to measure the magnetization of a magnetic material like a ferromagnet, or to measure the strength and,. This maximizes the position availability, in particular under challenging conditions such. fzpz (8. // STM32 WITH PPM INPUT AND. This is GY-273 HMC5883L 3V-5V Triple Axis Compass Magnetometer Sensor Module For Arduino(Power supply :3-5V) Means of communication: IIC communication protocol,Measuring range:± 1. Some devices are using a HMC5883L compass instead of a QMC5883L. 3-axis magnetometer. HMC5883L is 3-Axis Digital Compass with 12-bit ADC that enables 1° to 2° compass heading accuracy. g. It communicates via I2C and is able to provide magnetic flux density in three axes. HMC5883L Digital Compass (from electronic flea market) 3. I highly recommend it to anyone looking for precise and reliable GPS capabilities. I get some results but the heading seems to flip around quite a bit even when the chip is stationary, and if you rotate it it doesn't seem to reflect the actual direction. 3. Learn how to wire the Magnetometer to Arduino Mega in a few simple steps. This tutorial will get you started on using this sensor, with code and. 0: The best Betaflight ever! We recognise that most of our users just want to two things with. QMC5883L Compass is a Arduino library for using QMC5583L series chip boards as a compass. Moreover, try to move slowly, especially at points. Getting 16 point Azimuth bearing direction (0 - 15). Open the IDE and click to the Sketch menu and then Include Library > Manage Libraries. QMC5883L 3-Axis Magnetic Sensor Components datasheet pdf data sheet FREE from Datasheet4U. com Datasheet (data sheet) search for integrated circuits (ic), semiconductors and other electronic components such as resistors, capacitors, transistors and diodes. 3 accel + 3 gyros (MPU-6050), barometer (BMP-180) and. 3V and 6V. and I even can't find more Arduino+QMC5883L code examples. The compass module consists of an HMC5883L three-axis (Cartesian axes x, y, and z) magnetic field chip which consists of 3 magneto-resistive sensors arranged in axes perpendicular to each other. setSamplingRate (rate); compass. Further information from Mission Planner. 2760×4000 586 KB. It can be used for compass orientation, magnetic field detection, and robot navigation. . - Getting 16 point Azimuth bearing Names (N, NNE, NE, ENE, E, ESE, SE, SSE, S, SSW, SW, WSW, W,. He told you "Go West, young maker!" - but you don't know which way is West! Ah, if only you had this triple-axis magnetometer compass module. com: Matek M10Q-5883 GNSS Compass Module GNSS Ublox SAM-M10Q QMC5883L Magnetic Compass for RC Drone FPV Racing : Toys & GamesConnect the QMC5883L Electronic Compass to Arduino via the I2C port. 3 to 5VDC. {"payload":{"allShortcutsEnabled":false,"fileTree":{"examples/azimuth":{"items":[{"name":"azimuth. Ensure that your QMC5883L chip is connected. When it appears, type QMC5883L into the search field, press enter and you should see a library named QMC5883LCompass listed. I recently purchased the HMC5883L I2C compass module. 0 out of 5 stars Not compatible with Adafruit's library (use QMC5883LCompass library by MRPrograms) Reviewed in the United States on January 18, 2020. Check if new data is available. It’s communicate with the HMC5883L. The high number of visible satellites enables the receiver to select the best signals. 4. 6V) and Low Power Consumption (75 A) The QMC5883L is a multi-chip three-axis magnetic sensor. Hi, I am working on my first arduino project with a Lilygo TWatch 2021 board. The GY-271 QMC5883L 3-axis Electronic Compass Module Magnetic Field Sensor is designed for low field magnetic sensing with a digital interface and it is perfect to give precise heading information. 9 mm surface. GY-271 QMC5883L 3-axis electronic compass module is designed for low-field sensing with a digital interface and it is perfect to give precise heading information. This ASIC is equipped with high resolution HMC118X magneto-resistive sensors and a 12-bit ADC. \arduino-1. 4) Now we will change the update rate of the GPS. The chipset which is use in this module is HMC5883L The sensor converts any magnetic field to a differential voltage. GY-271 Compass Module Pinout. setOverampling (ovl); Allowable values for rate are 10, 50, 100, or 200 Hertz. QMC5883L Compass is a Arduino library for using QMC5583L series chip boards as a compass. These are the common, cheap HMC5883L magnetometers available on well known reprobate auction sites, I'll post a link if necessary, but I suspect you know the ones - 5 pins: Vcc, Gnd, SCL, SDA and. To get HMC chip to be identified and working on GY-87 board need to add into initialization (beginning) the following: `//Bypass Mode to get HMC module on GY-87 working!4. Calibration basics, min/max calibration, azimuth calculation. - Getting 16 point Azimuth bearing Names (N, NNE, NE, ENE, E, ESE, SE, SSE, S, SSW, SW,. Stanley compass With this principle, a device can understand if It’s changed its position or direction on the 3 axis x, y, and z. You can directly connect this breakout board with Arduino Uno without the need of extra components. ; field_strength_y (Optional): The field strength in microtesla along the Y-Axis. Or fastest delivery Wed, Sep 27. ino","contentType":"file. A magnetometer can sense where the strongest magnetic force is coming from, generally used to detect magnetic north. Finally, press the Send button to send these settings to the GPS. My connections seem to be secure, and I have installed and updated all the necessary components also: sudo apt-get update. The iFlight M8Q-5883 GPS comes with an integrated QMC5883L compass module, b uilt-in TCXO crystal, and farad capacitor for a faster hot start, additional front-end LNA and many other features!. This module is actually a combination of 3 sensors. - Getting 16 point Azimuth bearing direction (0 - 15). Locate the included calibration sketch under EXAMPLES > QMC5883LCOMPASS > CALIBRATION. QMC5883LCompass library includes a calibration function and utility sketch to help you calibrate your QMC5883L chip. This surface -mount, small sized chip has integrated magnetic sensors with signal condition ASIC, targeted for high. The first one: GitHub - mprograms/QMC5883LCompass: QMC5883L Compass is a Arduino library for using QMC5583L series chip boards as a compass. exit status 1 Compilation error: could not convert 'compass. ₹ 106. Targeted for high precision applications such as compassing, navigation and gaming in drone, robot, mobile and personal hand=held devices. com) for a project where I need a semi-accurate (+/- 5 degrees) compass reading. A code walk-through is. Using Arduino Sensors. I bought these and they were actually working great, but then I encountered a weird problem. Reviewed in the United States on November 20, 2022. mount 16 -pin l eadless chip carrier (LCC). . You can get the temperature and teh magnet values out of a qmc5883l. Superior position accuracy in urban canyons. 0x0. To associate your repository with the magnetometer-calibration topic, visit your repo's landing page and select "manage topics. The Matek M8Q-5883 is a GPS and compass combo that provides rock-solid location data for any project. Calibration is a two-step process. Calculating Azimuth. QMC5883L. Communication with the QMC5883L is simple and all done through an I 2 C interface. He told you "Go West, young maker!" - but you don't know which way is West! Ah, if only you had this triple-axis magnetometer compass module. Rotate the QMC5883L Compass Magnetometer around all three axes until the calibration is complete. . - Calculating Azimuth. 1. Specification: Name: QMC5883L modules (three-axis magnetic module)The qmc5883l allows you to use your QMC5883L triple-axis magnetometers ( datasheet) with ESPHome. Select “RATE (Rates)” on the left, which brings up the rate settings. It will tell you the address of the device, if it finds it !! With any I2C device, this should be done. The Honeywell HMC5883L is a surface-mount, multi-chip module with a digital interface for applications such as low-cost compassing and magnetometry. get_magnet print (m). HMCs are being discontinued, I believe. Includes on-board voltage regulator, allowing you to power the module with voltages between 3. Features. Reviewed in the United States on November 20, 2022. 1 × Nextion NX4832T035 3. ↓↓↓ Complete description, time index and links below ↓↓↓In part 2 (link below) we read every bi. gps_guided_autonomous_vehicle. DKARDU 2 pcs GY-271 QMC5883L Triple Axis Compass Magnetometer Sensor Module 3-5V Electronic Compass Module with pin Header Dupont Cable for Arduino: Amazon. Hi! I have recently purchased a QMC5883 magnetometer and I am having some trouble getting it to work. Compatible in all gizduino boards. For your UAV systems, Robots, RC, FPV or other projects. I can read the data normally, but I have no way to complete the compass calibration. QMC5883L is a 3-axis magnetic sensor with high resolution and accuracy. Using Arduino Sensors. The C code below shows you how to do HMC5883L Arduino tilt compensation but uses the alternative chip QST5883L (HMC5883L chip versions are. . Copyright (C) 2017 Andy Barnard based on an original for the. Interfacing of HMC5883L with Arduino Uno. Is this complex necessary for QMC5883L or just because not many people use it? Thanks. HMC5883L usses I2C communication interface and can connect to any board with UEXT. h> // Reference the QMC5883L. The push button is a normally open one. Send the letter ‘c’ to the Arduino. cpp","contentType":"file"},{"name. ino","path":"examples/calibration/calibration. Tutorial to Interface HMC5883L Compass Sensor With Arduino: Description HMC5883L is a 3-axis digital compass used for two general purposes: to measure the magnetization of a magnetic material like a ferromagnet, or to measure the strength and, in some cases, the direction of the magnetic field at a point in. Hi all - keep in mind that the QMC chip is vastly lower quality than the Honeywell original (lower sensitivity and lots of noise). Hence, the offloading of QMCs to unwary buyers will persist for a few months. xlibraries. Flight controller: Matek H743-WLITE I connect as follows: GND, 5V, DA1, CL1. MAX-M10S supports the concurrent reception of four GNSS (GPS, GLONASS, Galileo, and BeiDou). He told you "Go West, young maker!" - but you don't know which way is West! Ah, if only you had this triple-axis magnetometer compass module. 6 install of betaflight. 0 (and subsequent updates) on an F7 board. mprograms / QMC5883LCompass. You should see two numbers, one is labeled Heading and the other Degrees. Calibration is a two-step process. (update 05/24) Boladge HMC5883L Compass Module. Contribute to alva-seal/qmc5883l development. . Contribute to DFRobot/DFRobot_HMC5883L development by creating an account on GitHub. - Getting 16 point Azimuth bearing direction (0 - 15). An Arduino project on a small autonomous vehicle guided by GPS and compass which can avoid small simple objects Input one or multiple destinations manually through a text menu on a Bluetooth terminal and the vehicle will move to its destinationMatek Systems GNSS M10Q-5883 U-Blox M10 GPS with Compass QMC5883L Mo – RCDrone, Хорошие отзывы ⭐ Рейтинг ⚡ Мы ускорили доставку! 【Скидки, купоны, Покупайте Запчасти и аксессуары по выгоднойTo install QMC5883LCompass into your Arduino IDE you can use the Library Manager (available from IDE version 1. Driver for QMC5883L chip found in many GY-271 boards. Amazon. A tag already exists with the provided branch name. More than 100 million people use GitHub to discover, fork, and contribute to over 420 million projects. This is the code that seemed to work and outputs the values for x, y, z, heading, headingDegrees. About Us. jremington May 13, 2022, 2:33am #3. This low-cost 10 DOF (degrees of the freedom) sensor from dfrobot is highly integrated with the ADXL345 accelerometer, QMC5883L magnetometer, ITG3205 gyroscope and BMP280 air pressure sensor and temperature sensor. The circuit for this Arduino based Digital Compass is pretty simple, we simply have to interface the HMC5883L sensor with. 16 Bit ADC With Low Noise AMR Sensors Achieves 5 Milli-Gauss Field Resolution. However, if it reads a heading below 100, and I move the compass very slightly, by around 10 deg, the heading jumps. {"payload":{"allShortcutsEnabled":false,"fileTree":{"src":{"items":[{"name":"QMC5883LCompass. Calculate the real Gauss value for the X and Y axes from the amount of LSBs returned where the LSB value by default is. Your computer. Included a calibration routine in the sketch. However, I am using a code for GPS Guided Robotic car from online and it is a bit difficult to change. Using Arduino Sensors. ; GY-273 3V-5V QMC5883L Triple Axis Compass Magnetometer Sensor Module Three Axis Magnetic Field Module ; The GY-273 module is based on the Honeywell HMC5883L IC for low-field magnetic sensing with a digital interface for applications such as lowcost compassing. @asmaa1995 - there is a neat trick you can do which lets you avoid any need to calibrate. Unzip it into the libraries file of Arduino IDE by the path: . mprograms / QMC5883LCompass. The Matek System M9N-5883 GNSS & Compass GPS uses multi-constellation GNSS powered by u-Blox NEO-M9N, and the NEO-M9N is a concurrent GNSS receiver that can receive and track multiple GNSS systems. toniz March 14, 2023, 7:13am 1. The HMC5883L being a magnetometer sensor does the same thing. 10. I am using qmc5883l as my internal compass. Hello, in this video we gonna try to interface a FAKE version of the HMC5883L (GY-273) which is actually the QMC5883 module they do the same work but you kno. GND: Ground. Model: GY-271. This is a very short and simple class. cpp","contentType":"file"},{"name. 50 minutes is close enough to 1 degree and my compass has a very fine 360 degree marks. If you get a GY-271 board and observe an I2C address of 0x0C and read back nothing but zeros from the board, then you probably have a QMC5883L chip!1 × 4GB Micro SD Card The LCD loads its user interface from a micro SD card. To select a 5Hz rate, we change the measurement period to 200ms (the inverse of 5Hz). Step 1: Run Calibration Sketch ; Ensure that your QMC5883L chip is connected. . T he HMC5883L utilizes Honeywell’s Anisotropic Magnetoresistive (AMR) technology that provides advantages over other. align_mag_yaw=900. ↓↓↓ Complete description, time index and links below ↓↓↓A while ago I featured t. 4. {"payload":{"allShortcutsEnabled":false,"fileTree":{"avr-compass":{"items":[{"name":"avr-hw-i2c","path":"avr-compass/avr-hw-i2c","contentType":"directory"},{"name. I managed to solve this issue by moving the GPS code out of the loop it was in and into its own function. This is an Arduino library for Grove 3-Axis Digital Compass HMC5883L. Industry lowest current consumption. Check this module out, this is a breakout board for QMC5883L that is compatible with Honeywell's HMC5883L, a 3-axis digital compass. If you want more detailed settings, you can use it as follows. I have been trying to get this magnetometer to work - to no avail. delete the boards support package folder esp32 and then try to install it again. cpp","path":"src/QMC5883LCompass. ProTip! Exclude everything labeled bug with -label:bug . In this video, we will learn how to use this sen. . Ensure that your QMC5883L. Hi, When I am compiling the code of QMC5883L, found that's a kind of complex as the code attached, not like the HMC5883L code seems simple, such as "#define OSR 0b00 " etc. Since the HMC and QMC versions essential provide the same output data the calibration process is the same in each case. mprograms / QMC5883LCompass Star 54. {"payload":{"allShortcutsEnabled":false,"fileTree":{"examples/calibration":{"items":[{"name":"calibration. Buyers should no that this is not a direct replacement for Adafruit's product and it will not work right out the box with their library. It embeds a low noise LDO regulator for supplying a wide range of power input,. Supports: - Getting values of XYZ axis. Calibration is a two-step process. econjack: It seems pretty clear to me you need to download and install the "other" version and give it a try. ino","path":"examples/calibration/calibration. This surface -mount, small sized chip has integrated magnetic sensors with3. Im working on a project that a little simular to a reverse geocache. I highly recommend it to anyone looking for precise and reliable GPS capabilities. leico May 24, 2018, 8:53am 1. The compass module consists of an HMC5883L three-axis (Cartesian axes x, y, and z) magnetic field chip which consists of 3 magneto-resistive sensors arranged in axes perpendicular to each other. The QST chip on this module is a license build Honeywell HMC5883L. 3 V. Working with an awesome team, we created a platform for inspiring conversations and thought-provoking talks. Next QMC5883LCompass. A tag already exists with the provided branch name. I hooked up my new Compass Module GY-273 which was supposed to be a HMC5883L. MAX-M10S supports concurrent reception of four GNSS (GPS, GLONASS, Galileo, and BeiDou). This tutorial uses: 1. QMC5883L/QMC5883P: Python class for the QMC5883L/QMC5883P Three-Axis Digital Compass IC. Dimensions. . ; Locate the included calibration sketch under EXAMPLES > QMC5883LCOMPASS > CALIBRATION. The compass uses the I2C protocol. Initialize the given QMC5883L magnetic sensor. GPS and COMPASS. 79. Features 10 Hz Refresh rate (600 times/second) Additional front-end LNA (Low Noise Amplifier) High sensitivity 15x15mm GPS patch antenna Built-in TCXO crystal and farad capacitor for faster hot start Compass module QMC5883L integrated Specifications GPS module: GPSSAM-M8Q Frequencies： 72 channel Compass module: QMC5883The iFlight M8Q-5883 GPS comes with an integrated QMC5883L compass module, b uilt-in TCXO crystal, and farad capacitor for a faster hot start, additional front-end LNA and many other features!. QMC5883 dataseheet: QMC5883 library:. #21 opened on Jul 24 by mateusmsantin. This will start the calibration process. ↓↓↓ Complete description, time index and links below ↓↓↓In part 3 (link below) we calibra. Step 1: Run Calibration Sketch. According to the direction in the data sheet, the x axis is facing forward and the z axis is up. This ASIC is equipped with high resolution HMC118X magneto-resistive sensors and a 12-bit ADC. 0 . However, I am using a code for GPS Guided Robotic car from online and it is a bit difficult to change the code, so I have decided to directly hack the HMC library and. But it can be off by 90 degrees in an absolute sense. It can be used for compass orientation, magnetic field detection, and robot navigation. Visit our Website at - e-Gizmo. Type " compass " in the Filter box of the Component Toolbox then select the " Compass HMC5883 " component ( Picture 1 ), and drop it in the design area. Make sure the QMC5883L module is horizontal。. Using Arduino Sensors. Matek GPS & Compass Module M10-5883. These nodes allow existing ArduPilot supported peripherals to be adapted to the CAN bus as DroneCAN or MSP devices. T he HMC5883L is a 3. Compared against a standard compass, the out-of-the-box calibration is q. 0 . You can get the temperature and teh magnet values out of a qmc5883l. cpp: Change the constructor to: QMC5883LCompass::QMC5883LCompass(TwoWire* p_wire) { this->p_wire = p_wire; } Then do a find and replace, replacing all occurences of: Wire.