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Reply To: Testing power consumption

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2021-03-15 at 8:10 PM #15259
Matt Barney
Participant

    @shicks Thanks for those details. I wonder whether it could be the turbidity sensor, rather than the Mayfly, that’s actually drawing power, but I wouldn’t have thought it could do that while (or if) the Mayfly is sleeping. A bit more about my circuit:

    I’m powering the Turner from Mayfly’s switched 3V3. The Turner’s analog output is 0-5V, which I’ve connected to an external ADS1115 ADC. The Mayfly’s communicates to the ADC over I2C via a logic level shifter. The Turner also has a digital input to trigger its wiper, and a digital output that signals when the wiper is in its home position.

    I’ve attached a wiring schematic. Does anything jump out that could be leaking current during sleep?


    @neilh20     Thanks for the feedback, and I’ve got a very similar spreadsheet! I’ve also just received the parts for a FTDI cable to get serial output without supplying power – thanks for your work with this!

    Matt

    Trout Unlimited

    Attachments:

    1. Turner-Turbidity-Plus-circuit.jpg