My PIC Journey: PIC12F675 and 74HC4067 ANALOG MULTIPLEXER SETUP

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This project with the PIC12F675 and the 74HC4067 can gather data from up to 8 LM35 or TMP36 temperature sensors, or even a combination of both. The program allows for individual calibration for each sensor. This way, it is possible to standardize the behavior of the sensors or to alert about different temperatures in different objects.

Although the 74HC4067 device allows for up to 16 addressable analog sensors through a combination of 4 bits (S0, S1, S2, and S3), in the configuration with the PIC12F675, it is only possible to address a maximum of 8 sensors. This is because there are not enough digital output pins on the PIC12F675 to fully utilize the 74HC4067.

It's important to highlight that since these are analog sensors, which typically produce a voltage between 0 and 5V depending on the magnitude they are designed to measure, it is easily feasible to replace them with other types of analog sensors as required by your application.

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#pic12f675 #microchip #mplabx #74HC4067 #multiplexer