The circuit lighting the flower is a very easy one. If you're just starting with electronics, this might be a nice project to begin with. There's only five components and 4 leds to be soldered.
Have a look at the video to see how it works...
Step 1: Stuff you need
All parts can be obtained in a one-stop shopping effort: Euro's, visit Conrad.com. Americans, shop at Radio Shack.
Total costs should not exceed €7 / US$ 10
For the circuit:
- 2x 10mm red leds
4x 2mm green leds.
(Use what you like and what you can make. I experimented a lot before I decided to use the leds mentioned...)
- 2 Transistors, BC547B
- 2 3 Volt Lithium coin cells. Bigger is better, I used model CR2450
- 2 battery clips
- 2 resistors: 39 kOhm, 1 MegaOhm
- 1 Electrolytic capacitor: 2,2 µF
For the leafs and the stem:
- Solid kern copper wire, about 60 cm (24")
- Stranded kern (supple) copper wire, about 10 cm (4")
- Jumper wire (not on the picture), for the flower's "stamen"
- Prefab circuit board (see pic 4)
- Small tie-raps
- Soldering iron and solder
- Third hand
- A breadboard for prototyping
- Scissors or a sharp knife
- Multimeter for prototyping
- Small pliers or a multi-tool
- Power drill and a 1.5 mm drillbit