Skip to main content

77. Controlling Micro servo Robotic Arm with MPU-6050 sensor module

 Hey everyone!


I am back with an interesting project. Today, you will be learning about controlling a Simple 2 axis Robotic Arm, made from Micro servo motors, with an MPU-6050 sensor module. Please feel free to visit my previous blog post to learn about the MPU-6050 sensor module.

Hardware components used in this project

  • Arduino Mega 2560 - You could use any other Arduino microcontroller, but make sure you use an external power supply.
  • USB Type A/B cable (for Arduino Mega 2560)
  • MPU-6050 sensor module
  • SG-90 Tower Pro Micro Servo motor (x2)
  • Male-to-Male Jumper wires (x6)
  • Male-to-Female Jumper wires (x5)

Setup



Schematic

MPU-6050 sensor module

  • VCC - 3.3V
  • GND - Ground
  • SDA - D20 (Arduino Mega 2560), A4 (Arduino Uno and Nano)
  • SCL - D21 (Arduino Mega 2560), A5 (Arduino Uno and Nano)
  • INT - D2

Micro servo motor (Roll)

  • S (Yellow/ Orange) - D9
  • + (Red) - 5V
  • - (Black/ Brown) - GND 

Micro servo motor (Pitch)

  • S (Yellow/ Orange) - D10
  • + (Red) - 5V
  • - (Black/ Brown) - GND

Coding

As I already mentioned in my previous blog post, you will be needing Jeff Rowberg's I2C Development library and the MPU-6050 library to interface your MPU-6050 sensor module with the Arduino microcontroller board. To learn more about the libraries, please visit Jeff's website. 
Go to File menu from the top menu bar and select the MPU6050_DMP6 example sketch from the MPU6050 library. Upload it to your Arduino microcontroller board and observe the readings produced by the sensor module. Rotate the sensor module to notice the changes and identify the roll, pitch and yaw. Roll (longitudinal axis), pitch (transverse axis) and yaw (vertical axis) are aircraft principal axes. 
For this project, we will be using only the roll and pitch measurements to control the simple robotic arm. The robotic arm is made using two micro servo motors so you will be needing the Servo library  for your microcontroller to control the servo motor movement. 
Use attach( ) function to declare the pins to which your servo motors are attached and set the initial position of your servo motors as zero within void setup( ). If you read the codes carefully, you would notice that the Roll measurements (in degrees) are indicated as ypr[2] * 180/M_PI. 
Rotate the sensor module and observe the measurements produced to calculate the offsets and the range. Finally, you should use this range to map the measurements to the servo motor's position. Watch the YouTube video in the final section to understand how this works.

If anyone has any questions about the codes, please feel free to comment below. Please do not send me any email requesting the complete codes.

Final Look

If anyone has any questions or suggestions about this project, please let me know in the comment section below or send me an email at arduinoprojectsbyr@gmail.com.

Comments

Post a Comment

Popular posts from this blog

51. Buzz wire game using Arduino

Hello everyone! This is my first Arduino project in 2020 and it is going to be a fun and simple project. You would have heard of the Buzz Wire, a steady hand game, and today you will be learning to make one using Arduino. Hardware components used in this project Arduino Nano USB Type A to mini B cable (for Arduino Nano) Solderless Breadboard - Mini and Full-size LEDs (x2) - Green and Red Resistors (x2) - 220 Ω  Active Buzzer module (KY-012) LCD display module with I2C interface - 16x2 Male-to-Male Jumper wires (x4) - 10cm Female-to-Male Jumper wires (x5) - 20 cm Jumpers (x5) - to reduce the usage of wires Copper wire  Tape (or any form of insulation)  Setup Your hardware setup must look somewhat similar to the ones in the images above. The beginning and end of the copper wire maze must be taped to prevent conductivity between the wire loop and maze. Connections LCD display module with I2C interface GND - Ground VCC - 5V SDA - A4 SCL - A5
Post a Comment
Read more

71. Buzz Wire Game ( Version 2.0 ) using Arduino

Hey Everyone! I hope that everyone's safe during this pandemic. Today I am going to explain you about the second version of my Buzz wire game. People who are bored of staying indoors can find this game pretty interesting and fun to play.  If you are a beginner, you can start off with my first version of this project :  51. Buzz wire game using Arduino   Hardware components used in this project Arduino Uno Solderless Breadboard (x2) - Full/ Full+ LCD display module with I2C module - 16x2 Potentiometer - B20K Push-buttons (x3) Resistor - 220 Ω Active Buzzer module (KY-012) LED - Red Copper Wire - 19/ 20 gauge thick Male-to-Male Jumper wires - 10cm and 20cm Wire - Long enough to connect the loop of copper wire to ground Other tools required for this project Cutting pliers - To cut the right amount of copper wire Round-nose pliers - To bend the copper wire and make a maze and loop Hardware setup Connections Wire Maze - D2 Wire loop - Ground (GND) B20K Potentiometer S - A0 (+) - 5V (-)
1 comment
Read more

86. RFID Health tag (Arduino and Python)

 Hey everyone, Sorry I have not uploaded in a while. Today, I will be sharing an interesting project with all of you. This RFID Health tag project is useful when it comes to keeping track of vaccinated individuals, their biodata and their health conditions and medications. For this project, you will be needing Arduino and Python. Read on further to see how I did this project. Hardware components used in this project Arduino Uno Solderless Breadboard - Half+ MRFC522 RFID reader RFID key tags (x5) Push-buttons (x2) Male-to-Male Jumper wires (x12) USB Type A/ B cable (for Arduino Uno) Software required Arduino IDE - latest version recommended Python 3.8 Schematic MFRC522 RFID reader SDA/ SS - D10 SCK - D13 MOSI - D11 MISO - D12 IRQ - Not connected GND - Ground RST/ RESET - D9 3.3V - 3.3V Push-buttons Submit button - D4 Retrieve button - D5 Coding Arduino For this project, you will be using the following libraries: MFRC522 by miguelbalboa -  https://github.com/miguelbalboa/rfid SPI - In-bu
Post a Comment
Read more