Who said that electronics can’t be romantic? We can use it to show a person our love, and it is exactly what we are going to do: a present, as simple to realize as wonderful to see, to give to the person we love.
It could be a great gift for Valentine’s Day or anniversary.
The idea is to realize a casket which has inside some little red LEDs arranged in a heart shape.
A switch turn the LED on and off.
You can see the final result in the picture above. It's amazing!
Step 1: What we need
- a casket (mine is priced ~€2.50);
- 27 red LED (~€6.00);
- one 220Ω resistor;
- one switch;
- one battery case (4 AA batteries);
- black cardboard (better if rigid);
- soldering station
- optional: a third hand (~€6.00) is really useful during soldering.
Step 2: Making the heart
Now, the heart. Using a 2D vector graphics software (I recommend Inkscape), draw a heart, formed by 27 circles, diameter ~0.6 cm. I provided the one I made, but feel free to modify it as you want.
Print it, place it on the cardboard, and make holes in correspondence to the circles: there you will place LEDs.
I used a belt puncher.