Take your summer to the next level with our top gadget to 3D print in summer. From simple objects to must-haves, you'll love our selection!

For the leds, wire the 5V directly (NOT via the arduino) and the data to the arduino pin 10 (PMW). The microswitch is a simple wiring (GND on one side, and arduino pin A0 on the other). The KY-040 is ...