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--- soft-robotics:sensors:mps-20n004d0d [2019/02/16 16:24]
avnerus
+++ soft-robotics:sensors:mps-20n004d0d [2019/02/19 08:56]
avnerus
@@ Line 1: / Line 1: @@
-====== MPS20N0040D-S Pressure Sensor ======
+====== MPS20N0040D Pressure Sensor ======
 {{:soft-robotics:sensors:sens-mps20n0040d.jpg?400|}}
@@ Line 5: / Line 5: @@
 ===== Description =====
-This is a cheap yet ubiquitous pressure sensor. Unlike the [[soft-robotics:sensors:mis-2500|MIS-2500]], it requires amplification using an Op-Amp.
+This is a cheap yet ubiquitous pressure sensor based om a Wheatstone bridge. Unlike the [[soft-robotics:sensors:mis-2500|MIS-2500]], it requires amplification using an Op-Amp.
+===== Datasheet =====
-==== Datasheet ====
 {{ :soft-robotics:sensors:mps20n0040d-s_datasheet.pdf |Download here.}}
+===== 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.
+{{:soft-robotics:sensors:mps-pinout.png?400|}}
+==== 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**
+{{:soft-robotics:sensors:pressure_sensor_connection_avner.png?800|}}
+*Based on the image in "The answer is 42"
+==== Breadboard image ====
+{{:soft-robotics:sensors:breadboard_pressure_sensor.jpg?400|}}
+* I also added 100Uf capacitors because seems like that was recommended.

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