Welcome to ATTYS

Attys DAQ board topview

Attys is an open source wearable high precision bluetooth data acquisition device

Technical specifications

Prices from £199

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Attys with attys-scope recording EMG

Science & Biotech

High precision data acquisition with your smartphone, tablet or PC

  • Open data format with direct import into Python, OCTAVE, R, GNUPLOT and MATLAB(tm)
  • Open transmission format for realtime applications
  • Temperature, pressure or any other sensor signal
  • Record form up to 4 Attys at the same time
  • Attys has internal sensors for acceleration and orientation (compass)
  • Heart activity (ECG)
  • Heart rate variability (HRV)
  • Muscle activity (EMG)
  • Brain activity (EEG)
  • Evoked potentials (VEP, AEP)
  • Beta ratio and Power Fast/Slow (EEG) used in depth of anaesthesia
  • Eye movements (EOG)

Open source data formats for Python, OCTAVE, R or MATLAB(tm).

All Attys programs save the data as tab separated values which can be directly imported into all popular software packages.

Schools / STEM teaching

Measure from a wide range of sensors

Attys connects to virtually any sensor to measure pressure, light intensity, temperature, voltage, current, … for Science, Physics, Biology, Chemistry and Math teaching.

Google’s Science Journal is the perfect app for this purpose and it talks to Attys! It’s fun to use and is a great program to learn how to measure data from around you. It exports data in comma separated values which can be easily be imported in a wide variety of programs such as Python or a spreadsheet for plotting.


Learn to measure, record and analyse data with your phone or PC

The Attys is a general purpose data acquisition device and is perfect for teaching where students can write apps for their own mobile phones, tablets or PC or record data and process it in Python, OCTAVE or MATLAB.

Learn how to record biosignals

Record ECG, EMG, EOG or EEG and write mobile phone or tablet apps using our open source apps as a starting point.

See how it works

Kirsty shows you how the Attys works by measuring pressure, temperature and her ECG.

Python, JAVA or C++

All our software is open source and licensed under the apache license which also allows commercial use.

  • Open source programs in Python, JAVA and C++ on github  
  • Write your own apps by forking our open source programs.
  • Connect to the Attys directly from your own software (open data format).
  • Write realtime applications for example games with the Attys as an input device. The Attys transmits its data with low latency and jitter (<10ms).
  • Open firmware
Closeup of Attys DAQ board

Technical Specs

  • Fully qualified Bluetooth ® version 2.1 + Enhanced Data Rate (EDR)
  • Recommended bluetooth dongles: ASUS-BT400 or broadcom based dongles (BCM2045B).

  • Fully assembled and tested with CE mark (industrial, domestic, research and educational use)
  • Analogue inputs
    • 2 Channels
      1. fully differential (instrumentation amplifier)
      2. single ended or differential (GND acts as neg for differential measurements)
    • Resolution: 24bit
    • CMRR: 120dB
    • Signal to noise ratio: 100dB
    • Full scale range: +/-2.42V differential and +/-1.21V single ended
    • Input impedance: 1GOhm
    • PGA with the following gain factors: 1,2,3,4,6 (default),8 and 12
    • Sampling rate: 125Hz or 250Hz
    • Internal temperature measurement
    • Programmable current source to measure resistance
    • ADS1292 A/D converter chip
  • Accelerometer
    • Resolution: 16bit
    • Full scale range: 2G, 4G, 8G, 16G (default)
    • MPU9250 IMU
  • Compass
    • Resolution: 16bit
    • Full scale range: 4800.0E-6T
    • Sampling rate: 8Hz
    • AK8963 magnetometer
  • Two internal digital inputs (3.3V logic)
  • Communication method: rfcomm also known as the serial port emulation
  • Data format
    • CSV (125Hz) or base64 encoded binary data (125Hz/250Hz) with cr/lf after every sample
    • Text commands to configure Attys
  • Power supply: USB mini connector for charging. Battery lifetime approx 8hrs for continuous transmission
  • LED indicators for: connected (blue), charging (red), charged (green) and CPU status (green)
  • Dimensions: 28 x 65 x 65 mm
  • Weight: 100 g
  • Mounting holes for cable ties

As featured in:

Looking for open source USB based DAQs? Visit our partner website USB-DUX: