1. 2017. Digilent Electronics Explorer. https://store.digilentinc.com/electronics-explorer-all-in-one-usb-oscilloscope-multimeter-workstation/ 2017. Digilent Electronics Explorer. https://store.digilentinc.com/electronics-explorer-all-in-one-usb-oscilloscope-multimeter-workstation/
2. 2019. Fritzing Project. https://fritzing.org/projects/ 2019. Fritzing Project. https://fritzing.org/projects/
3. 2020. Arduino. http://arduino.cc. 2020. Arduino. http://arduino.cc.
4. 2020. Smith-Kettlewell Technical File. https://www.ski.org/smith-kettlewell-technical-file 2020. Smith-Kettlewell Technical File. https://www.ski.org/smith-kettlewell-technical-file
5. 2020. Web Content Accessibility Guidelines. https://www.w3.org/WAI/fundamentals/accessibility-principles/ 2020. Web Content Accessibility Guidelines. https://www.w3.org/WAI/fundamentals/accessibility-principles/