Hardware Guides

Sensor, expansion board, dock and accessory guides for Shimmer3 and Shimmer3R.

IMU User Guide

Accelerometers, gyroscope and magnetometer: how they work, how to use their data, calibrating them, and the sensors' ranges and rates.

Updated 2026-10-27
ECG User Guide

Measuring ECG with the ExG unit: leads and electrode placement, configuration, signal quality and heart rate.

Updated 2026-10-27
EMG User Guide

Measuring EMG with the ExG unit: electrode positioning, configuration and common signal processing.

Updated 2026-10-27
GSR+ User Guide

Galvanic skin response: measurement ranges, electrodes, skin resistance, and the 3.5 mm jack for optical pulse sensing.

Updated 2026-10-27
Shimmer Dock User Guide

Charging, SD card access and firmware programming through the Shimmer Dock.

Updated 2026-10-27
PROTO3 Series User Guide

Prototyping boards for connecting your own analog, I2C, SPI and serial sensors.

Updated 2026-10-27
Shimmer3 JTAG Developer Board User Guide

Programming and debugging Shimmer3 firmware with a JTAG or Spy-Bi-Wire tool.

Updated 2026-10-27
Optical Pulse Sensor User Guide

Measuring pulse with the optical finger probe or ear clip through the 3.5 mm jack, and converting PPG to heart rate.

Updated 2026-10-27
External Expansion Board User Guide

Connecting your own analog, SPI, serial and parallel-bus sensors through the Shimmer's external connector.

Updated 2026-10-27
Bridge Amplifier+ User Guide

Load cells, strain gauges and resistance measurement with the Bridge Amplifier+ unit, and calibrating them.

Updated 2026-10-27
Shimmer3/3R Hardware Developer Reference

For firmware developers and repair: the connector and processor pin assignments for Shimmer3 and Shimmer3R, the Shimmer3 mainboard's block diagram and power switching, the Bluetooth radio, the microSD data path, the battery charger and LED conventions.

Updated 2026-10-27