.:madworm:.'s photos

Doesn't look half bad.

Doesn't look half bad.

01 Mar 2012 153
Mood light coaster - power supply

Mood light coaster - power supply

01 Mar 2012 128
This is based on a dc/dc boost converter sucking energy from 2x AA cells and boosting the voltage up to about 4.5V. This little module (available at Pololu) is adjustable from 2.5-9.0V and depending on the boost-factor it can deliver several 100s mA to the LED board!
Mood light coaster - LED board

Mood light coaster - LED board

01 Mar 2012 126
The working horse plugs right in.
Mood light coaster - batteries

Mood light coaster - batteries

01 Mar 2012 144
2x AA cells. Unfortunately they seem to have quite a high internal resistance. Although brand new (and supposedly full), they quickly drop down to 1V and below when the LED board is set to full blast. I had the same problem with old NiMH cells and wanted to toss them, but if alkali cells do the same... Maybe I need high-current rechargeable ones.
Mood light coaster - close up

Mood light coaster - close up

01 Mar 2012 138
Mood light coaster - assembled

Mood light coaster - assembled

01 Mar 2012 146
I wanted to use TORX screws for the top, but they didn't arrive yet. Now I also know that they will be too long. I ordered M3x10, but I need M3x5... and I don't feel like cutting down any more bolts. Maybe I'll swap them later.
Laser-cut acrylic sheet

Laser-cut acrylic sheet

29 Feb 2012 193
Ponoko really is quick! To be more precise: the German branch called Formulor. It just took 3 days from order till delivery. Nice!
Diamonds - sort of

Diamonds - sort of

29 Feb 2012 209
These I have thrown away, but I kept some of the hexagonal ones for now. They look nice. I also kept some of the larger cut-out parts, just in case I should need some plastic parts later.
IR reflex sensor

IR reflex sensor

28 Feb 2012 197
Fortunately the IR transmission of acrylic sheets is pretty high, so it can be used to detect objects behind them. Unfortunately the range is just a few mm. And I need to get rid of the nice little breakout board, as it is too thick. Why didn't they use 0.5mm laminate. I'll have to pull the thing off and glue it directly on-top of the micro.
Boost converter

Boost converter

28 Feb 2012 191
This one is quite good. Doubling from 2V to 4V still gives several hundred mA of juice. Nice. And the little chip didn't even get warm.
The first and probably...

The first and probably...

28 Feb 2012 141
also the last reel of 1k 0603 resistors I will ever buy for private use.
Where's the beef?

Where's the beef?

28 Feb 2012 122
This indeed seems to be a full reel - including the part-less lead-in part.
We have parts too

We have parts too

28 Feb 2012 138
A tepid foretaste of a new project

A tepid foretaste of a new project

26 Feb 2012 186
It's a box btw.
Improvised soup

Improvised soup

24 Feb 2012 249
Trying to avoid convenience food at all cost. Also purely analog!
Another promo shot ;-)

Another promo shot ;-)

19 Feb 2012 189
Now if only I could embed these boards into the bottom of glasses... that would be nice.
Another promo shot ;-)

Another promo shot ;-)

19 Feb 2012 146
Now if only I could embed these boards into the bottom of glasses... that would be nice.
5899 items in total