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Step 2Wiring diagram
Before we go any further, a simple wiring diagram.
The system uses a 24 volt doorbell transformer as the power source; a 4.7k-Ohm resistor knocks the voltage down to that required by the LED (~2.8 volts.)
All of the electrical components are available at Radio Shack and will cost approximately $6.
In addition, you'll need some 2 strand bell wire; how much depends upon where you plan to put the LED. More on this later.
All of the Rat Shack part numbers are indicated in the diagram.
Let's take a look at how I mounted the doorbell transformer in the next step...
The system uses a 24 volt doorbell transformer as the power source; a 4.7k-Ohm resistor knocks the voltage down to that required by the LED (~2.8 volts.)
All of the electrical components are available at Radio Shack and will cost approximately $6.
In addition, you'll need some 2 strand bell wire; how much depends upon where you plan to put the LED. More on this later.
All of the Rat Shack part numbers are indicated in the diagram.
Let's take a look at how I mounted the doorbell transformer in the next step...
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