Hello I am using a pressure sensor that has an analog linear output of 0 - 5 volts. 0 volts is 0psi and 5 volts is 100psi. Is it possible to connect the analog sensor to a Photon and read the 0 - 5vdc output of the sensor? I have seen diagrams for using 2 resistors to drop the voltage to 3.3 but tha…

Hi @aharris I would use an op-amp for that job. You need a gain (loss) of 3.3/5 or 0.66. The op-amp should run on a 5V supply. Here is a tutorial to get you started but you really just need the op-amp and a few resistors: [image] Summing Amplifier is an Op-amp Voltage Adder Electroni…

Using 0 - 5 volt sensor

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iansydney February 1, 2018, 10:39am 16

BDub has a great write up on ADC_SAMPLING_TIME might help:

Helped me figure out why my readings were off, good advice !

Odd analog readings (part 2)

Regards.

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Using 0 - 5 volt sensor

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