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5v input signal to MMR?

worsterkworsterk
in Hardware

I am trying to synchronize some of the MMRs with our lab's motion capture system (Vicon Nexus). We can send a 5V pulse via RCA from the motion capture system. It would be ideal if that 5V pulse could be recorded on an IMU when collecting with a group of IMUs. Given the capabilities of the MMRs, is this possible? Is there a schematic where we could hardwire a connection? We are collecting data (logging mode using only Accelerometer feature) from a group of 5 MMRs. Thanks!

Comments

  • MattMatt

    @worsterk you can use a gpio input on the MMR, and the pin change event system in the API to log the pulse event. MMR pins are only 3V tolerant, so you will need to level shift the pulse signal first -- with a voltage divider, zener circuit, active level shifter, etc.

  • worsterkworsterk

    @Matt said:
    @worsterk you can use a gpio input on the MMR, and the pin change event system in the API to log the pulse event. MMR pins are only 3V tolerant, so you will need to level shift the pulse signal first -- with a voltage divider, zener circuit, active level shifter, etc.

    Thanks for the tip Matt!
    -K

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