Arduino project, buzzer trouble. Thread starter mogbert; Start date Jul 14, 2014; Jump to latest Follow Reply Status ... There is no need for a current-limiting R (as for an LED).

In this article I will add some simple Arduino LED projects starting with basic ones like how to turn on an LED, blinking, and more. Every step will have the code, the schematic, photos of the project ...

He used one Arduino to gather not just buzzer info, but also keypad data from four satellite controllers. Each has an RJ45 jack, allowing it to connect tot he base unit with an Ethernet patch cable.

Individual LED lights are common in Arduino projects because they offer proof a circuit works. Soldering iron and solder ($9.95) : A soldering iron is used to create new and permanent connections ...

An Arduino can be used to test the life of any battery with less than 5 volts, Boxall says. So, for a quick way to see how much juice your AAA, AA, C, or D batteries have left, build this Arduino ...