Button-Pads RGB / Midi / Lichtcontroller
	* https://www.3ders.org/articles/20140802-3d-printed-mini-oontz-midi-controller.html
	* https://www.sparkfun.com/products/7836 (schon Teile vorhanden, ungenutzt!
		* PCB sollen wohl nicht so geil sein
	* Adafruit
		* Silicone Elastomer 4x4 Button Keypad https://www.adafruit.com/product/1611
		* Adafruit NeoTrellis M4 https://www.adafruit.com/product/4020


uC-Spielzeug allgemein
	* Adafruit Grand Central M4 Express featuring the SAMD51 https://www.adafruit.com/product/4064
	* Adafruit ItsyBitsy M4 Express featuring ATSAMD51 https://www.adafruit.com/product/3800
	* Adafruit ATSAMD09 Breakout with seesaw https://www.adafruit.com/product/3657

https://geizhals.de/?cat=switchgi&sort=p&xf=12885_Switch~13079_24~13106_RJ-45+PoE%2B~13266_Gigabit~13342_8