A Super Simple UV Flashlight
by electricaveman in Circuits > Electronics
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A Super Simple UV Flashlight

Portable blacklight!
Gather the Materials

Materials:
1. 9 volt battery
2. A momentary push button switch or other switch of your flavor
3. LEDs of your choice. I used UV considering it doesn’t need a resistor to run off of a 9v battery
4. Resistor (depends on the voltage of the LEDs used, with UV, a resistor isn’t needed (2x4.5v=9v))
5. A case to put it all in
Tools:
1. A soldering iron
2. Solder
3. Drill bit and drill
4. Electrical tape
5. Wire cutter
Drilling for LEDs

Drill the necessary number of holes in the case where you want the LEDs to be.
Drilling for Switch


Drill holes for the switch and do a test fit.
Solder the LEDs

Solder the LEDs in series taking care that they have the right spacing for the holes that were drilled.
Solder the Switch


Solder wires onto the legs of the switch as shown.
Install the Switch

Fit the switch into position. The holes that were previously drilled may have to be enlarged slightly for the wires to go through.
Solder the Rest

Solder the rest of the connections as shown.
Insulate

Add tape where necessary and put it back together. You now have a simple flashlight!
Schematic
