Implementing Vibration Feedback

A-1) Electrical Schematic Design _ Analog inputs

A-2) Circuit _ Analog inputs

B-1) Electrical Diagram _ Digital inputs

B-2) Result _ Digital inputs

Output Amplitude changes according to input digital signals.

X-axis indicates digital signals from XPC, and Y-axis is for output amplitude of square wave.

Through above circuits, more than 4 vibration motors can be used for experiments, although XPC has 4 analog outputs. Moreover, we could control amplitude of wave to give subjects effective feedback.

C) Specification

1) C2 Tactor vibration motor: http://www.eaiinfo.com/Tactor%20Products.htm

Recommended Drive: Sine wave tone bursts 250Hz at 0.25A rms nominal, 0.5 A rms max for short durations.

2) LM675 operational amplifier

3) LM324 operational amplifier