OSD of sensor data

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    sterno
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    HI, I’m building an ROV using an Arduino Uno with the Video experimenter shield for navigation data display. There are 2 analog sensors (pressure and temperature) that I want to read as well as a digital compass, which uses an I2C or PWM output. I also need 4 PWM outputs for servo control, 4 digital outputs as well as an RS485 port.

    Reading through the forums, I understand that both the analog in and the I2c interface are disabled to use the video experimenter which complicates things a bit.
    Being a bit rusty I thought I’d ask what others thought would be the best way to proceed.

    My options as I see them are:
    1. Find sensors that use serial interface and use a separate Arduino for control.
    or
    2. Connect the 2 Arduino boards via serial and let one process video overlay and set the other up to do data collection and control.

    Unless there’s another way?

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