- Planning the construction (Step1)
- The handmade shade (Step2+3)
- The electronic circuit for driving 3W LEDs with the ATmega8 controller (Step4)
- The Code (Step5)
- How to get it stand-alone (flash the Arduino bootloader with PonyProg and burn the sketch) (Step6) coming soon
Vid: Some Impressions
Pic1: The Moodlamp
Pic2: A mighty 3W LED
Step 1: Planning the construction:
On the first sheet you see some early ideas. "I chose the bottom-right design.
The second page shows some details for the construction.
measurements are experimental like each time, but ok for me ;-)
My hardware thoughts were:
- Can I handle the materials?
- Will the light shine through the shade?
- What proportion should it have?
- How many knobs and pots will I need for a simple interface?
My software thoughts were:
How many different functions should the lamp have?
- Automatic RGB fading with changeable speed
- Manual color adjustment
- White with adjustable brightness
Step 2: The handmade shade
I found a 3 foot x 3 foot sheet of 30 mill plastic at the store (Pic1-3).
Use a sharp knife to cut it.
I frosted the plastic using sandpaper (Pic4-6).
To get a smooth cylinder I screwed it all together after drilling the right holes (Pic7-8).
Mount the plastic shades on the threaded brass supports. It looks nicely and is rather easy to get and handle.
I drilled and tapped the holes to match the 1/8th threaded bar (Pic9-10).
meanwhile, I made a heatsink to cool down the 3W LEDs and to have a solid base.
For getting not too many shades from the shaft, I build a little cage from welding rod with a M8 nut on top (Pic12).
As finish i assembled all together. The little screws and nuts were a little tricky, but 30minutes later I got it done.