1. Adafruit. 2021. Adafruit Gemma v2. Retrieved Feb 6, 2021 from https://www.adafruit.com/product/1222 Adafruit. 2021. Adafruit Gemma v2. Retrieved Feb 6, 2021 from https://www.adafruit.com/product/1222
2. Adafruit. 2021. Adafruit LED Sequins. Retrieved Feb 6, 2021 from https://www.adafruit.com/product/1757 Adafruit. 2021. Adafruit LED Sequins. Retrieved Feb 6, 2021 from https://www.adafruit.com/product/1757
3. Adafruit. 2021. Adafruit NeoPixel LED. Retrieved Feb 6, 2021 from https://www.adafruit.com/product/1260 Adafruit. 2021. Adafruit NeoPixel LED. Retrieved Feb 6, 2021 from https://www.adafruit.com/product/1260
4. Humza Akhtar and Ramakrishna Kakarala . 2015. Efficient capacitive touch sensing using structured matrices . In Computational Imaging XIII, Vol. 9401 . International Society for Optics and Photonics , 94010O. Humza Akhtar and Ramakrishna Kakarala. 2015. Efficient capacitive touch sensing using structured matrices. In Computational Imaging XIII, Vol. 9401. International Society for Optics and Photonics, 94010O.
5. Contactless pick-and-place of millimetric objects using inverted near-field acoustic levitation