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DRV2605L: Driving Haptuator Mark II using DRV2605?

Saddam Hossain
Prodigy 50 points
Part Number: DRV2605L
Other Parts Discussed in Thread: DRV2625, DRV2605, DRV2625EVM-CT, USB2ANY

Hi,

I have few vibratory actuators in our lab form Tactile Labs. Specifically,  Haptuaator Mark II (link: tactilelabs.com/.../ ). My professor wants me to use these actuators in my haptic project.

From my guess, I think these are LRA actuators. So, is it possible to control these actuators using DRV2605L? I am looking for your expert advice. 

  • 0
    TI__Genius 10442 points
    Hi Saddam,

    I haven't experimented with this particular actuator. There is not much information on the website, but it looks like it can be driven with an audio amplifier or possible the DRV2605/DRV2605L/DRV2625. The one concern I have is the 5.5Ohm spec. Our drivers specify the minimum load impedance as 8Ohms. This specification is related to the over-current protection.
    The DRV series is designed for LRAs with a high-Q value. This actuator is designed for wide bandwidth and may not have a very high-Q, so there may be issues.. The only way to know is to experiment with the LRA and driver. If the closed-loop algorithm doesn't work well, then you can try to drive the actuator in open-loop mode. I would suggest the DRV2625EVM-CT for experimentation. This EVM is very simple to use and does not require the USB2ANY for communication with the computer. The control program is Haptic Control Console.
  • 0 in reply to Kelly Griffin
    Prodigy 50 points

    Hi Griffin,

    Thank you so much for your suggestions.

    I will try with the DRV2605L I have in my lab first because I don't have DRV2625EVM-CT in my lab right now. I will share the result with the expriment with DRV2605L and Haptator Mark II actuator.