This project cost me at this time $49.95 Australian for the strip of 30 LEDs.
I already had the desk lamp. If i had to buy it it would have cost me ~ $40 Australian. As the LED strip is geared for 12V I used a power pack / wall wart I had spare. If I had to buy a wall wart I guess it would have cost me anoth ~ $20 Australian.
So I guess you could argue that this project really cost ~ $110 Australian which is roughly $75 US.
Check out the individual steps to see what I have done to end up with a quite passable LED desklamp.
Step 1: All the bits
- Ikea desk lamp (worth about $40 Australian)
- Old wall wart providing up to 1.4A at 12V (less amps will probably still work ok)
- Double sided mounting tape.
- Strip of 30 SMD LEDs
Step 2: Disassembling the desk lamp
How the lamp head looks before the surgery.
Remove the two screws and the wing nut. This will allow you to remove the bottom cover.
The bottom cover is off and the switch and base for the fluoro tube can be clearly seen.
As you can see, the switch has not got any srew terminals for the electrical connections. The terminals are of the type where the cable is pushed in and is locked in place automatically.
To release the cables I had to carefully push in with a small screw driver to release the cable lock.
View of the switch and a short piece of cable I reused due to the new cable not being fat enough to lock in the switch terminals.