FLEXIDOTS

IMU Drawing Machine

Components List

Microcontroller:
- Arduino Nano 33 BLE
- Arduino Nano Shield Module

Input / Output
- None

Power
- 9V Battery Module

Attachment
Band*1
Connector*1

If you do not have all the above components, please refer to Hardware page to get the kit.


Software

You can try the sketch on p5 editor, or you can download the code here.


Hardware

About accessing IMU sensor from Arduino Nano 33 BLE, please refer to Get Started with Arduino


        /*
        FlexiDots IMU Drawing Machine
        https://studiohuahong.github.io/FlexiDots/examples/IMU-drawing-machine.html
        */
        #include 
        #include  // change to Arduino_LSM6DS3.h for Nano 33 IoT or Uno WiFi Rev 2
        
        BLEService        imuService                 ("2A5A20B9-0000-4B9C-9C69-4975713E0FF2");
        BLECharacteristic accelerationCharacteristic ("2A5A20B9-0001-4B9C-9C69-4975713E0FF2", BLENotify, sizeof(float) * 3);
        
        void setup() {
          Serial.begin(9600);
          //  while (!Serial); // uncomment to wait for Serial port to be opened
        
          if (!IMU.begin()) {
            Serial.println("Failed to initialize IMU!");
            while (1);
          }
        
          if (!BLE.begin()) {
            Serial.println("Failed to initialize IMU!");
            while (1);
          }
        
          BLE.setLocalName("FlexiDots IMU Drawing Machine");
          BLE.setDeviceName("FlexiDots IMU Drawing Machine");
          BLE.setAdvertisedService(imuService);
        
          imuService.addCharacteristic(accelerationCharacteristic);
        
          BLE.addService(imuService);
          BLE.advertise();
        }
        
        void loop() {
          if (BLE.connected()) {
            if (accelerationCharacteristic.subscribed() && IMU.accelerationAvailable()) {
              float acceleration[3];
              // x, y, z
              IMU.readAcceleration(acceleration[0], acceleration[1], acceleration[2]);
              accelerationCharacteristic.writeValue(acceleration, sizeof(acceleration));
            }
          }
        }