ESP32 IMU

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Introduction

The Makerfabs IMU Module features the 6-axis MPU-6050 MEMS sensor from InvenSense. Each of these 6DoF IMU features an ESP32 with an MPU-6050 which contains a 3-axis gyroscope as well as a 3-axis accelerometer. The MPU-6050 uses 16-bit analog-to-digital converters (ADCs) for digitizing 6 axes. By combining a MEMS 3-axis gyroscope and a 3-axis accelerometer on the same silicon die together with an onboard Digital Motion Processor™ (DMP™). It can be used as a helicopter/quadcopter.

Model: IMU
ESP32 6- Axis IMU-1000x750.jpg
ESP32 6- Axis IMU-back.jpg

Features

  • Integrated ESP32 2.4G WiFi and Bluetooth
  • I2C Digital-output of 6-axis MotionFusion data in rotation matrix, quaternion, Euler Angle, or raw data format
  • Input Voltage: 3.7V Battery or 5.0V MicroUSB
  • Tri-Axis angular rate sensor (gyro) with a sensitivity up to 131 LSBs/dps and a full-scale range of ±250, ±500, ±1000, and ±2000dps
  • Tri-Axis accelerometer with a programmable full scale range of ±2g, ±4g, ±8g and ±16g
  • Digital Motion Processing™ (DMP™) engine offloads complex MotionFusion, sensor timing synchronization and gesture detection
  • Embedded algorithms for run-time bias and compass calibration. No user intervention required
  • Digital-output temperature sensor
  • Size: max 100mmX100mmX9mm

Usage

ESP IMU Module

  • You can get the firmware from here: Github:ESP32_IMU_Module
  • After Arduino IDE installed, there is a default package to support ESP32. Install ESP32 board and select the port:
  1. Choose File -> Preferences -> settings -> Additional Boards Manager URLs.
  2. Fill the link "https://dl.espressif.com/dl/package_esp32_index.json" and click OK.
  3. Choose Tools -> Board -> Boards Manager.
  4. Type "ESP32" into the search box and install "esp32 by Espressif Systems"
  5. Select Tools -> Board -> Esp32 Wrover Module.
  6. Select Tools -> Port, select the related Port.

ESP IMU 111.PNG

  • Connect the board to the PC by USB cable. Open the file “\ESP32_IMU_Module-master\mpu6050_wifi\ mpu6050_wifi.ino”. Modify the Wifi configuration and PC port.
 #define WIFI_CONNECT
#ifdef WIFI_CONNECT
const char *ssid = "Makerfabs";
const char *password = "20160704";
const char *host = "192.168.1.234";
  • Verify and upload it.

ESP IMU 112.PNG

  • Open the exe “\ESP32_IMU_Module-master\imu_show\dist\imu_show.exe” and reset the board. Wait for a minute and the window will display the mock-up image.

IMU Show 1.gif

IMU car rasing

Firmware about MCU

uPyCraft_v1.1
  • You can download the software from here: link
  • Connect the board to the PC by USB cable. Open uPyCraft_v1.1, select the tools:” Tool > board > esp8266” and “Tools > port > com*”, click the connected button on right.

If the connection is not successful, the prompt will be shown as “open the serial error, please try again”. You have to update the firmware to promise a connection successfully. The firmware download link is http://www.micropython.org/resources/firmware/esp32spiram-idf3-20190529-v1.11.bin. Open “Tools>BurnFirmware”, set the parameter, as the Picture, and click OK.
ESP IMU 113.PNG

Firmware
  • You can get the firmware from here: https://github.com/Makerfabs/Project_IMU-Car-Racing.
  • Open all of the Python files in the “\Project_IMU-Car-Racing-master\ESP32_mpu6050\workSpace”, and download it one by one. Click the “DownloadAndRun” button on right, the program has been downloaded to the board, you can see it in the “device” menu on left, as the Picture.

ESP IMU 114.PNG

Software about PC

Python3

Choose the 3.8.5 version，download and install it.

  • "Add Python 3.8 to PATH" the selection must be checked during the installation process, as the Picture.

ESP IMU 119.PNG

  • It will prompt that some libraries are not installed after the program runs.

ESP IMU 115.PNG

You can run the following command in cmd.exe to install and uninstall libraries:

pip install xxx   // xxx is library name
pip uninstall xxx   // xxx is library name
pip list    //   print installed libraries

ESP IMU 116.PNG

  • After the library installation is complete, the python program can be executed on the PC.
Operation
  • Use the command line to run the file: “/Project_IMU-Car-Racing/car_racing_py/car_racing.py”. Click “GO” and reset the board.

ESP IMU 117.PNG

  • Tilting the IMU left and right to control the car position.
  • Tilting the IMU back and forth to control the car speed.

IMU Car Racing Show 1.gif

FAQ

You can list your questions here or contact with support@makerfabs.com for technology support.

Resources

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