iStudio Data-Logger

Supported Interface
 - Arduino interface (open source type)
 - Dyntechno JoyLAB-A
 - SWR Disc
 - Sensors built into the Android device
Support.

Built-in sensors within the Android device are supported by Google's standard method.

Arduino interface open source type can connect Uno, mega2580 and maple mini to USB, Bluetooth (BLE not supported) if you only adjust communication method.
We share Arduino communication part, please refer to it.
-- sauce --
incomingByte1 = Serial.parseInt ();
    switch (incomingByte1) {
      case 1: // Check device
        incomingByte2 = Serial.parseInt ();
        switch (incomingByte2) {
          case 1: // send device name
            Serial.println ("{11, Arduino}");
            Serial.flush ();
            break;
          case 2: // send channels count
            Serial.print ("{12,");
            Serial.print (sensorLength);
            Serial.println ("}");
            break;
        }
        break;
      case 2: // send sensor information
        incomingByte2 = Serial.parseInt ();
        switch (incomingByte2) {
          case 1: // send sensor id
            Serial.println ("{13,1,2}");
            break;
          case 2: // send sensor information
            delay (10);
            Serial.print ("{14,");
            Serial.print ("0,"); // channel number
            Serial.print ("1,"); // sensor id
            Serial.print ("Voltage,"); // sensor name
            Serial.print ("V,"); // unit
            Serial.print ("0,"); // min value
            Serial.print ("5,"); // max value
            Serial.print ("0.001,"); // resolution
            Serial.print ("1,"); // calbration 0: false, 1: true
            Serial.print ("0,"); // sign invert 0: false, 1: true
            Serial.print ("0"); // data series
            Serial.println ("}");
            Serial.flush ();
            delay (10);
            Serial.println ("{14,1,2, Current, A, -1,1,0.001,1,0,0}");
            break;
        }
        break;
      case 3: // send data
        float retSampling = 0;
        float newTime = 0;
        incomingByte2 = Serial.parseInt ();
        switch (incomingByte2) {
          case 1:
            newTime = Serial.parseFloat ();
            // max send packet 115200 (bps) / 11 (bit) = 10472 (bytes)
            // 10472 (bytes) / 11 (packet size) = 952 (max send packet count);
            // 0.002: 500 packets
            if (0.002 <= newTime && newTime <= 30.0)
              samplingTime = (int) (newTime * 1000);
            Serial.print ("{15,");
            retSampling = samplingTime / 1000.0;
            Serial.print (retSampling, 3);
            Serial.println ("}");
            break;
          case 2: // one time
            readCurrentValue ();
            break;
          case 3: // start collection
            init_Sensor ();
            currentTimeCount = 0;
            digitalWrite (LEDpin, true);
            Serial.println ("{17}");
            runFlag = true;
            break;
          case 4: // stop collection
            runFlag = false;
            Serial.println ("{18}");
            digitalWrite (LEDpin, false);
            break;
        }
        break;
    }
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Other resources are at https://1drv.ms/f/s!AmbHpQNEKSyY7DmvBLYrHnLfrrr_.