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added research funding
==Electronics==
==Electronics==
The MPR121 capacitive touch sensor can be connected to up to 12 capacitive electrodes (e.g., 12 sipper tubes). Its GND, 3.3V, SCL and SDA pins are connected to the corresponding Teensy-LC pins. The 5V and GND Teensy-LC pins provide the logic power supply to the DRV8825 motor driver, which is connected to a 12V DC power supply with a 100 uF decoupling capacitor to power to the stepper motor. The direction (DIR), step (STP) and enable (ENA) pins of the motor driver receive signals from the Teensy-LC digital pins D0, D1 and D2 respectively. Because the reset (RES) and sleep (SLP) motor driver pins are active low pins, they are connected to the logic power supply to ensure they remain inactive. [https://drive.google.com/drive/folders/1_GCll42MNhbK981q99WKfd3auBnq7ENU Fritzing schematic of electronic esophagus circuit.]
==Hardware and 3D Printed Parts==
==3D Printed Parts and Hardware==
===3D Printed Parts===
Three of the four [https://drive.google.com/drive/folders/1WG1S4pQOFqJO8LHcBtilgX4-BnkKr9EW 3D printed parts] ("NemaMount," "MidBody" and 20mLbody") are attached together with [https://supergluecorp.com/product/super-glue-tube/ super glue] to form the body of the apparatus.
The "Plunger" will house some of the hardware, including the M8-1.25 Hex Nut and the linear ball bearing.
===Hardware===
The M8-1.25 Hex Nut can be inserted into the hexagonal cutaway in the 3D-printed "Plunger" and subsequently positioned so that the hole in the Hex Nut is in line with the continuous hole of the "Plunger."
The linear ball bearing fits snugly into the larger diameter continuous hole below the hex nut.
=Code=
=Code=
[[Category:Flavor Preference]]
[[Category:Flavor Preference]]
=Research Support=
T32 DC000044, National Institutes of Health (NIH/NIDCD) Bass, Marena N
Florida State University (FSU) Chemical Senses Training Program (CTP) Grant Award
Role: Trainee (08/07/2019 - 08/06/2021)