The Raspberry Pi doesn’t support any Analog to digital or digital to analog capabilities by default, so if you want to use analog sensors on Raspberry Pi, you will need some sort of external AD expansion board is required. PCF8591 Information A popular chip is…
The PCF8591 is a single-chip, single‑supply low‑power 8‑bit CMOS data acquisition device with four analog inputs, one analog output and a serial I²C‑bus interface. Three address pins A0, A1 and A2 are used for programming the hardware address, allowing the use of up to eight…
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