Ever had an idea pop into your head and you can't stop thinking about it? Well my idea was to have a tiny plane spinning inside a light bulb, activated by a sensor! Yes I know - not much of an idea but there it is.
First I prowled the internet trying to find the right type of sensor and I came across the PIR sensor. These are really ingenious and work by sensing infrared radiation. Everything emits some low level radiation, and the hotter something is, the more radiation is emitted.
I purchased a couple from Ebay and started to try and hack them by using a relay. After much frustration I decided to give this up and try another avenue. I found a heap of articles using arduino but I wanted to keep it simple. In the end I decided to use a 8 LED Light PIR Motion Sensor . The sensor had everything I needed to enable me to hack away with ease.
So here's my idea come to life - kind of. After much breaking of light bulbs I finally managed to complete the project.
Hope you Enjoy.
Step 1: Things to get
1. 3v geared motor. You can get these here. this one has 15 revolutions every minute - nice and slow.
2. 2 X 5mm LED's. I used yellow ones. They can be purchased here on Ebay
3. Plastic diffusers for the LED's. I used some from a set of solar LED's. You don't have to do this but it makes the LED light softer.
4. Small peice of dowel wood.
5. PIR sensor light - you can buy these here
6. PIR sensor (just the sensor). Buy these here
7. Copper wire - I used 2 types, 1 thin and 1 a little thicker. These can be purchased from your local hobby shop.
8. various coloured wire
9. Various brass attachments. i purchased these from my loacl hardware store.
10. Samll square peice of wood for base
11. Battery holders. The voltage I used was 7.5v so I used a 3v and a 4.5v battery holder. These can be purchased from your local electronic shop
12. Tiny plane! I used this one
1. Phillips head screwdriver
2. Hot glue
3. Soldering iron