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DRV2667 Embedded Software
2.2.5 Mode 1 – Concentration Game
Mode 1 is a game that incorporates the various Piezo effects. This can be used to demonstrate haptics in
a real application.
To begin playing Concentration:
1. Press any of the large effect buttons.
2. The game will then count down.
3. Once the countdown completes, a button will turn on and an effect will play.
4. Repeat the pattern by pressing the same button.
5. After each successfully repeated pattern, the board will repeat the same pattern and add one
additional button to the sequence.
2.2.6 Mode 0 – Analog or Audio Input
Mode 0 allows you to connect an analog input source to the DRV2667EVM-CT. See Analog/PWM Input
for the hardware configuration.
This shows the advantage of Piezo over other actuator technologies. Piezo actuators have a much faster
response time than ERM and LRA actuators, so the Piezo actuator can be driven with an analog or audio
signal and reproduce the input frequencies well.
Figure 20 is an illustration of an audio signal producing vibration on the Piezo actuator.
Figure 20. B3 – Audio In
13 SLOU323 – June 2013 DRV2667 Evaluation Module
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