INPUT DEVICES

GOALS FOR THE WEEK

    GROUP

  • Probe an input device(s)'s analog and digital signals
  • Document your work to the group work page and reflect on your individual page what you learned

    • INDIVIDUAL

  • Measure something: add a sensor to a microcontroller board that you have designed and read it.

Link to the group assignment: TEST

CAPACITIVE TOUCH SENSORS

TEST 1

I decided to make 3 pads as sensors added into the PCB and use the capacitive sensing library for SAMD micro controllers.

SCHEMATIC




PCB




Programming

I installed the Capacitive sensing library in Arduino and ran a sample code and got the following error,

The capacitive sensing library is not configured for SAMD11C micro controllers, so I had edit the library file.




THE CODE


SERIAL MONITOR





TEST 2 FOR THE FINAL PROJECT

For my final project, I wanted to make a capacitive sensing touchpad as a medium of interactive with a couple of motors. I added LED's instead of motors for testing.

SCHEMATIC




PCB




MODIFYING THE LIBRARY

    To make the circular pads,
  • Start with any standard footprint, select and click on Properties (or press E).
  • Click on Edit footprint.


  • Right click -- Poperties or Press E.


  • Here, you can change the shape of the footprint and the dimensions as well.


FLASHING

As I used the bigger SAMD11C21 Micro controller for the test, I had to download a different binary file for flashing.





PROGRAMMING







Design files download
Kicad for TEST 1
Kicad for TEST 2
Arduino Code for TEST 1
Arduino Code for TEST 2