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Step 4The wiring
This is a tricky step because you are working in such a small area, so use your components wisely.
Start out by attaching two small pieces of hookup wire to the leads on the switch. One piece of wire, for each lead on the switch. Don't make them too long because it will just cause more trouble when you try to fit make everything fit. (Refer to the second picture to estimate the length of the wire to use)
Next, get your masking tape, a piece of hookup wire, and your 3V coin battery. Take the piece of hookup wire, and tape it to the (-) side of the coin battery. Now, with one of the pieces of hookup wire attached to the switch, take that hookup wire and attach it to the (+) side of the coin battery.
So, right now you should have you switch in place, one of the leads of the switch attached to the positive side of the coin battery, while the other is currently not connected to anything, yet. Your coin battery should have one lead attached to the (+) side, and one to the (-) side. All set? Ok, now lets get the LED.
With your LED, you want the longer lead to attach to the (+) hookup wire coming from the coin battery. The shorter lead of the LED is the (-) lead, so you want this to be soldered or attached to the currently unattached hookup wire of the switch.
You certainly can use a resistor, but because it is not much voltage, it does not do too much harm. plus, it would make it harder to fit in the tin in the long run.
Ok, this may be a little confusing, so I will sum it up.
Start out by attaching two small pieces of hookup wire to the leads on the switch. One piece of wire, for each lead on the switch. Don't make them too long because it will just cause more trouble when you try to fit make everything fit. (Refer to the second picture to estimate the length of the wire to use)
Next, get your masking tape, a piece of hookup wire, and your 3V coin battery. Take the piece of hookup wire, and tape it to the (-) side of the coin battery. Now, with one of the pieces of hookup wire attached to the switch, take that hookup wire and attach it to the (+) side of the coin battery.
So, right now you should have you switch in place, one of the leads of the switch attached to the positive side of the coin battery, while the other is currently not connected to anything, yet. Your coin battery should have one lead attached to the (+) side, and one to the (-) side. All set? Ok, now lets get the LED.
With your LED, you want the longer lead to attach to the (+) hookup wire coming from the coin battery. The shorter lead of the LED is the (-) lead, so you want this to be soldered or attached to the currently unattached hookup wire of the switch.
You certainly can use a resistor, but because it is not much voltage, it does not do too much harm. plus, it would make it harder to fit in the tin in the long run.
Ok, this may be a little confusing, so I will sum it up.
- Your switch has two leads
- Have two pieces of hookup wire from those leads
- One of the wires goes to the negative side of the coin battery
- The other, goes to the negative lead on the LED
- The longer lead of the LED has a piece of hookup wire attached to it and the (+) side of the coin battery.
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