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soft-robotics:sensors:mps-20n004d0d

MPS20N0040D Pressure Sensor

Description

This is a cheap yet ubiquitous pressure sensor based om a Wheatstone bridge. Unlike the MIS-2500, it requires amplification using an Op-Amp.

Datasheet

Circuit Design

After plenty of reading and experimenting I came up with the following LM358 based circuit that I am satisfied with.

Pinout

This pin diagram is for the version of the sensor that I ordered.

Circuit

The circuits I have seen online use two connections to the LM358, first as a differential amplifier and then as a normal amplifier. I believe that I can manage with just differential amplification, because it provides both amplification to the signal and eliminating the 2.5v offset of the output.

The following setup is for 3.3v on the Teensy

*Based on the image in “The answer is 42”

Breadboard image

* I also added 100Uf capacitors because seems like that was recommended.

Further info

soft-robotics/sensors/mps-20n004d0d.txt · Last modified: 2019/02/19 08:56 by avnerus