Thanks to all the people who created these, I learned a lot from them. The most useful for me were these: http://matthewcmcmillan.blogspot.lt/2014/03/arduino-using-digital-potentiometers.html http://embedded.fm/blog/2016/3/31/quadcopter-controller-buttons-and-joysticks https://cdn.sparkfun.com/assets/learn_tutorials/2/4/9/mma8452q-hookup_bb.png http://dzlsevilgeniuslair.blogspot.lt/2013/11/more-toy-quadcopter-hacking.html http://hackaday.com/2016/06/06/power-glove-takes-over-quadcopter-controls/ http://images.core-electronics.com.au/media/wysiwyg/tutorials/aidan/Pinout_of_the_UNO.png https://www.arduino.cc/en/Tutorial/DigitalPotControl?from=Tutorial.SPIDigitalPot http://www.learningaboutelectronics.com/Articles/MCP4131-digital-potentiometer-circuit.php https://www.youtube.com/watch?v=_dUQOTemSJQ http://forum.arduino.cc/index.php?topic=27986.0 https://www.arduino.cc/en/Reference/SPI https://learn.sparkfun.com/tutorials/serial-peripheral-interface-spi Other useful links https://cdn.sparkfun.com/assets/learn_tutorials/2/4/9/mma8452q-hookup_bb.png https://learn.sparkfun.com/tutorials/flex-sensor-hookup-guide https://github.com/dzlonline/easycom/blob/master/easycom/easycom.h https://www.dorkbotpdx.org/blog/paul/better_spi_bus_design_in_3_steps http://how-to.wikia.com/wiki/Guide_to_computer_chip_or_integrated_circuit_identification https://www.arduino.cc/en/Tutorial/DigitalPotentiometer http://www.instructables.com/id/Digital-Potentiometer-MCP41100-and-Arduino/ http://www.learningaboutelectronics.com/Articles/MCP4131-digital-potentiometer-circuit.php http://www.microchip.com/forums/m523290.aspx https://gist.github.com/matt448/9612191 https://www.youtube.com/watch?v=pp36Q5i08HE https://www.youtube.com/watch?v=RnWPoaLU1i4 I plan on maybe testing the use of RC filters http://www.instructables.com/id/Arduino-RC-Circuit-PWM-to-analog-DC/step2/RC-Filter/ https://learn.sparkfun.com/tutorials/introduction-to-operational-amplifiers-with-ltspice?_ga=2.82846673.67267391.1495997622-1455881230.1494759743