Guide by Tim; Set Up a Geophone with a Raspberry Pi and an ADC (ADS1115)

@Tim Great guide - I got it running with a zero and played around with a few control methods, great piece of kit. I’m looking to get it running on a Pico for another project - I managed to get the Adafruit library going on the pico but I am getting a ‘RuntimeError: No pull up found on SDA or SCL; check your wiring’. I tried adding a 2.2k resistor after the two GPIO pins on the pico to no affect.

However after googling I see the Pico has the ability to directly read an analogue signal - is there any reason not to wire the sm-24 to the pico and read the differential value that way? I have a bit of experience with the linux/SBC side of things but am a total novice with the microcontrollers. I see in the above comment you mention an ADC is still needed?

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