Connect a LED with a battery and a resistor. The long leg of an LED is the positive, the anode. You could connect a LED directly to a battery without a resistor, but that probably wouldn’t last very long. The resistor acts as a load and limits the amount of current in the circuit. When […]
Buy a LM386, this chip has been around for ever, is cheap, plentiful and the recommended supply voltage is 4-12VDC.
Buy the Arduino UNO (R3 at the time of this writing). This is the “most standard” version of the Arduino that I’ve come across. The Arduino IDE works perfectly via USB and most shields that you come across will be physically and electronically (5V logic) compatible. I would start with the Arduino UNO R3 to […]