A DIY LED touch sensitive lamp project.
MATERIALS
CIRCUIT COMPONENTS
- TTP223 capacitive touch switch button module
- DC male and female adaptors
- 10 ohm resistor
- 1W warm white LED
- Aluminium heatsink (better safe than sorry)
- 5V power supply
LIGHT DIFFUSER
I made the diffuser out of regular printer paper and made into a cuboid with a 70 x 70 mm base. You can do this through origami or a printable template using a design of your choice.
BASE
I 3D printed the base using designs that can be found on my thingiverse. However, any base that hides the electronics and supports the diffuser will suffice.
INSTRUCTIONS
SOLDERING
The circuit for the project is relatively simple:
First, ensure the capacitive switch has self lock enabled. This is usually achieved by bridging the two ‘B’ soldering points.
Solder the positive end of the female adaptor to the VCC connection on the capacitive switch, and the negative end to ground. Next, solder the I/O connection of the switch to the positive terminal of the LED with the resistor in between. Finally, solder the negative terminal of the LED back to the ground of the female adaptor.
If you wish to chain these lamps, solder the positive and negative ends of the male adapter to the positive and negative of the female adapter. This male adapter can then be connected with the female adapter of another unit, as long as one unit is powered with the 5V supply.
DIFFUSER
The LED must be placed in a diffuser to spread the light evenly. I made this out of paper using an origami cube with a Pokeball design. You can search online for printable templates for any other papercraft designs.
I also attached a small heat sink to the LED using thermal paste to ensure it does not overheat if the lamp is left on for extended periods of time. I then taped the LED to the inside of the diffuser.
BASE
I made the base by 3D printing the parts and gluing them together. Next, I cut out some extensions for the legs using wood to allow for more space under the unit for the electronics. You can make the base using any suitable material as long as the electronics are covered.
