Extension wishlist: ADC extension



  • It would be great having an extension with ADC and a few analog lines. Right now the options are:

    • using the Arduino dock as a proxy
    • connecting an ADC manually

    I think it could be a very useful addition to the lineup. Are you by any chance working on something like this?



  • @Alex
    I would support this - I am currently building anI2C based ADC on a prototype expansion



  • Count me in too.

    The sensors that I personally use and can remember of off the top of my head that rely on ADC are:

    Thermistor (I use on radiators to trip fans)
    Light resistors (for PIR activation)
    Touch pad (or matrix grid pad with resistor network to use less pins, arduinos never have enough pins)
    Rain sensor (on my roof), soil forks (in my lawns)
    Potentiometer (multiple projects)
    Motion sensor (garage door)
    Sound sensor (detect smashes in the alarm system)
    Pressure pads (wired in to floor mats)
    Flame sensors (they're ADC right?! I forget!)

    And the other one that I don't actually use, only played with, the hall effect sensors.

    So yea, the onion without ADC capabilities is a tad limited.

    Hmmm.... I think I've used a few sensors in my projects, I should really start publishing more of my Arduino code on GitHub.

    Matt



  • @Alex @Matt-Ogborne FYI: the I2C ADC I am using is https://www.adafruit.com/products/1083?&main_page=product_info&products_id=1083 which provides either 4 single ended or 2 differential analog inputs.
    4 different I2C addresses can be assigned to each device giving the possibility of 16 single ended or 8 differential inputs (see: https://learn.adafruit.com/adafruit-4-channel-adc-breakouts?view=all for more details)


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