Intermediate
30 min

Elevate your project with ATmega328P and ICM-20689 for a superior user interface

Your path to perfect motion: 6-axis innovation begins here

6DOF IMU 6 Click with Arduino UNO Rev3

Published Feb 14, 2024

Click board™

6DOF IMU 6 Click

Dev. board

Arduino UNO Rev3

Compiler

NECTO Studio

MCU

ATmega328P

Revolutionize robotics with improved motion awareness and control, enabling robots to perform tasks with precision and adaptability in various industries

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Hardware Overview

How does it work?

6DOF IMU 6 Click is based on the ICM-20689, a 6-axis MotionTracking device that combines a 3-axis gyroscope, a 3-axis accelerometer, and a Digital Motion Processor™ (DMP) from TDK InvenSense. It also features a 4 Kbyte FIFO that can lower the traffic on the serial bus interface, and reduce power consumption by allowing the system processor to burst read sensor data and then go into a low-power mode.The ICM-20689, with its 6-axis integration, on-chip DMP, and run-time calibration firmware, enables manufacturers to eliminate the costly and complex selection, qualification, and system level integration of discrete devices, guaranteeing optimal motion performance. The gyroscope has a programmable full-scale of ±250, ±500, ±1000, and

±2000 degrees/sec. The accelerometer has a user-programmable accelerometer full-scale range of ±2g, ±4g, ±8g, and ±16g. Factory-calibrated initial sensitivity of both sensors reduces production-line calibration requirements. Other industry-leading features include on-chip 16-bit ADCs, programmable digital filters, an embedded temperature sensor, and programmable interrupts. The device provides high robustness by supporting 10,000g shock reliability. The device features I2C and SPI serial interfaces, wide operating voltage range (VDD) and separate digital IO supply (VDDIO) from 1.71V to 3.45V. Communication with all registers of the device can be performed using either I2C at 400kHz or SPI at 8MHz. 6DOF IMU 6 Click supports both SPI

and I2C communication interfaces, allowing it to be used with a wide range of different MCUs. The communication interface can be selected by moving SMD jumpers grouped under the COM SEL to an appropriate position (SPI or I2C). The slave I2C address can also be configured by an SMD jumper when the Click board™ is operated in the I2C mode. An SMD jumper labeled as ADD SEL is used to set the least significant bit (LSB) of the I2C address. Excellent choices for applications include mobile phones, tablets, drones, handset and portable gaming, motion-based game controllers, wearable sensors for health, fitness and sports and 3D remote controls for internet-connected DTVs and set-top boxes and 3D mice.

6DOF IMU 6 Click top side image
6DOF IMU 6 Click bottom side image

Features overview

Development board

Arduino UNO is a versatile microcontroller board built around the ATmega328P chip. It offers extensive connectivity options for various projects, featuring 14 digital input/output pins, six of which are PWM-capable, along with six analog inputs. Its core components include a 16MHz ceramic resonator, a USB connection, a power jack, an

ICSP header, and a reset button, providing everything necessary to power and program the board. The Uno is ready to go, whether connected to a computer via USB or powered by an AC-to-DC adapter or battery. As the first USB Arduino board, it serves as the benchmark for the Arduino platform, with "Uno" symbolizing its status as the

first in a series. This name choice, meaning "one" in Italian, commemorates the launch of Arduino Software (IDE) 1.0. Initially introduced alongside version 1.0 of the Arduino Software (IDE), the Uno has since become the foundational model for subsequent Arduino releases, embodying the platform's evolution.

Arduino UNO Rev3 double side image

Microcontroller Overview

MCU Card / MCU

default

Architecture

AVR

MCU Memory (KB)

32

Silicon Vendor

Microchip

Pin count

28

RAM (Bytes)

2048

You complete me!

Accessories

Click Shield for Arduino UNO has two proprietary mikroBUS™ sockets, allowing all the Click board™ devices to be interfaced with the Arduino UNO board without effort. The Arduino Uno, a microcontroller board based on the ATmega328P, provides an affordable and flexible way for users to try out new concepts and build prototypes with the ATmega328P microcontroller from various combinations of performance, power consumption, and features. The Arduino Uno has 14 digital input/output pins (of which six can be used as PWM outputs), six analog inputs, a 16 MHz ceramic resonator (CSTCE16M0V53-R0), a USB connection, a power jack, an ICSP header, and reset button. Most of the ATmega328P microcontroller pins are brought to the IO pins on the left and right edge of the board, which are then connected to two existing mikroBUS™ sockets. This Click Shield also has several switches that perform functions such as selecting the logic levels of analog signals on mikroBUS™ sockets and selecting logic voltage levels of the mikroBUS™ sockets themselves. Besides, the user is offered the possibility of using any Click board™ with the help of existing bidirectional level-shifting voltage translators, regardless of whether the Click board™ operates at a 3.3V or 5V logic voltage level. Once you connect the Arduino UNO board with our Click Shield for Arduino UNO, you can access hundreds of Click boards™, working with 3.3V or 5V logic voltage levels.

Click Shield for Arduino UNO accessories 1 image

Used MCU Pins

mikroBUS™ mapper

NC
NC
AN
NC
NC
RST
SPI Chip Select
PB2
CS
SPI Clock
PB5
SCK
SPI Data OUT
PB4
MISO
SPI Data IN
PB3
MOSI
Power Supply
3.3V
3.3V
Ground
GND
GND
NC
NC
PWM
Interrupt
PC3
INT
NC
NC
TX
NC
NC
RX
I2C Clock
PC5
SCL
I2C Data
PC4
SDA
NC
NC
5V
Ground
GND
GND
1

Take a closer look

Click board™ Schematic

6DOF IMU 6 Click Schematic schematic

Step by step

Project assembly

Click Shield for Arduino UNO front image hardware assembly

Start by selecting your development board and Click board™. Begin with the Arduino UNO Rev3 as your development board.

Click Shield for Arduino UNO front image hardware assembly
Arduino UNO Rev3 front image hardware assembly
Charger 27 Click front image hardware assembly
Prog-cut hardware assembly
Board mapper by product8 hardware assembly
Necto image step 2 hardware assembly
Necto image step 3 hardware assembly
Necto image step 4 hardware assembly
Necto image step 5 hardware assembly
Necto image step 6 hardware assembly
Arduino UNO MCU Step hardware assembly
Necto No Display image step 8 hardware assembly
Necto image step 9 hardware assembly
Necto image step 10 hardware assembly
Debug Image Necto Step hardware assembly

Track your results in real time

Application Output

1. Application Output - In Debug mode, the 'Application Output' window enables real-time data monitoring, offering direct insight into execution results. Ensure proper data display by configuring the environment correctly using the provided tutorial.

2. UART Terminal - Use the UART Terminal to monitor data transmission via a USB to UART converter, allowing direct communication between the Click board™ and your development system. Configure the baud rate and other serial settings according to your project's requirements to ensure proper functionality. For step-by-step setup instructions, refer to the provided tutorial.

3. Plot Output - The Plot feature offers a powerful way to visualize real-time sensor data, enabling trend analysis, debugging, and comparison of multiple data points. To set it up correctly, follow the provided tutorial, which includes a step-by-step example of using the Plot feature to display Click board™ readings. To use the Plot feature in your code, use the function: plot(*insert_graph_name*, variable_name);. This is a general format, and it is up to the user to replace 'insert_graph_name' with the actual graph name and 'variable_name' with the parameter to be displayed.

Software Support

Library Description

This library contains API for 6DOF IMU 6 Click driver.

Key functions:

  • c6dofimu6_default_cfg - This function executes default configuration for 6DOF IMU 6 click

  • c6dofimu6_angular_rate - Function is used to calculate angular rate

  • c6dofimu6_acceleration_rate - Function is used to calculate acceleration rate

Open Source

Code example

The complete application code and a ready-to-use project are available through the NECTO Studio Package Manager for direct installation in the NECTO Studio. The application code can also be found on the MIKROE GitHub account.

/*!
 * \file 
 * \brief 6DofImu6 Click example
 * 
 * # Description
 * 6DOF IMU 6 Click features a 6-axis MotionTracking device that combines a 3-axis gyroscope, 
 * a 3-axis accelerometer, and a Digital Motion Processor. 
 *
 * The demo application is composed of two sections :
 * 
 * ## Application Init 
 * Initalizes SPI and I2C drivers, performs safety check, applies default 
 * settings and writes an initial log.
 * 
 * ## Application Task  
 * Demonstrates the use of 6DOF IMU 6 Click board by reading angular rate, acceleration rate 
 * and displaying data to USB UART.
 * 
 * \author MikroE Team
 *
 */
// ------------------------------------------------------------------- INCLUDES

#include "board.h"
#include "log.h"
#include "c6dofimu6.h"

// ------------------------------------------------------------------ VARIABLES

static c6dofimu6_t c6dofimu6;
static log_t logger;

static uint8_t id_val;
static float x_accel;
static float y_accel;
static float z_accel;
static float x_gyro;
static float y_gyro;
static float z_gyro;

// ------------------------------------------------------ APPLICATION FUNCTIONS

void application_init ( void )
{
    log_cfg_t log_cfg;
    c6dofimu6_cfg_t cfg;

    /** 
     * Logger initialization.
     * Default baud rate: 115200
     * Default log level: LOG_LEVEL_DEBUG
     * @note If USB_UART_RX and USB_UART_TX 
     * are defined as HAL_PIN_NC, you will 
     * need to define them manually for log to work. 
     * See @b LOG_MAP_USB_UART macro definition for detailed explanation.
     */
    LOG_MAP_USB_UART( log_cfg );
    log_init( &logger, &log_cfg );
    log_info(&logger, "---- Application Init ----");

    //  Click initialization.

    c6dofimu6_cfg_setup( &cfg );
    C6DOFIMU6_MAP_MIKROBUS( cfg, MIKROBUS_1 );
    c6dofimu6_init( &c6dofimu6, &cfg );

    Delay_ms ( 100 );
    c6dofimu6_generic_read ( &c6dofimu6, C6DOFIMU6_WHO_AM_I, &id_val, 1 );
    if ( id_val == C6DOFIMU6_WHO_AM_I_VAL )
    {
        log_printf( &logger, "-------------------------\r\n" );
        log_printf( &logger, "   6DOF  IMU  6  Click   \r\n" );
        log_printf( &logger, "-------------------------\r\n" );
        c6dofimu6_power ( &c6dofimu6, C6DOFIMU6_POWER_ON );
    }
    else
    {
        log_printf( &logger, "-------------------------\r\n" );
        log_printf( &logger, "     FATAL  ERROR!!!     \r\n" );
        log_printf( &logger, "-------------------------\r\n" );
        for ( ; ; );
    }

    c6dofimu6_default_cfg( &c6dofimu6 );

    log_printf( &logger, "    ---Initialised---    \r\n" );
    log_printf( &logger, "-------------------------\r\n" );

    Delay_ms ( 100 );
}

void application_task ( void )
{
    c6dofimu6_angular_rate( &c6dofimu6, &x_gyro, &y_gyro, &z_gyro );

    log_printf( &logger, "Gyro \r\n" );

    log_printf( &logger, "X-axis: %.2f\r\n", x_gyro );
    log_printf( &logger, "Y-axis: %.2f\r\n", y_gyro );
    log_printf( &logger, "Z-axis: %.2f\r\n", z_gyro );
    log_printf( &logger, "---------------------\r\n" );

    c6dofimu6_acceleration_rate( &c6dofimu6, &x_accel, &y_accel, &z_accel );

    log_printf( &logger, "Accel \r\n" );

    log_printf( &logger, "X-axis: %.2f\r\n", x_accel );
    log_printf( &logger, "Y-axis: %.2f\r\n", y_accel );
    log_printf( &logger, "Z-axis: %.2f\r\n", z_accel );
    log_printf( &logger, "---------------------\r\n\r\n" );
    Delay_ms ( 1000 );
}

int main ( void ) 
{
    /* Do not remove this line or clock might not be set correctly. */
    #ifdef PREINIT_SUPPORTED
    preinit();
    #endif
    
    application_init( );
    
    for ( ; ; ) 
    {
        application_task( );
    }

    return 0;
}


// ------------------------------------------------------------------------ END

Additional Support

Resources

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