I regret paying extra money for one which had a on/off switch since I used a separate switch. You can use just a USB cable or even 4x AA battery pack provided you meet Nano input requirements. I used a 9 volt battery with a case and switch. Or you can do it without one and just drill holes and wood and hot glue the parts in place. (remember I'm using 2 per output so ~13 mA & ~20mA which is half of pin output current max)Īny breadboard will work, solder or solderless your call on how it will look. Red LED I used was 2.2V and the other 3.2V each LED. 330 ohm is pretty much standard in any Arduino starter pack.Ħ LEDs or however many you want. Just look for any rocker switch.Īny resistor will work but do an LED calculation and make sure you don't go over LED output or 40 mA max per pin on the Nano. I used a 9Volt case with a switch but it is hidden in my case so I added a switch to the outside. Not exact one I used but mine was 6圆圆mmĪny power switch will do. Be aware this has 4 different processors I use the 328P (old bootloader)Īny old buzzer will do I used a 16 Ohm buzzer.
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