Sorry, no updates on the 8×8 RGB matrix. I’m busy with packing, our lab is moving to a new university. I’ll stay behind and turn off the lights for good, decommission the servers and have way too many drinks …
So instead just a picture of a strictly analog circuit I had made a while ago.
Just transistors, resistors, buzzer and 3 LEDs. I won’t (and can’t) post a schematic for it as I don’t remember. As I didn’t have any inverters at hand at the time, I also used a few more transistors for that job. Purely TTL, the hard way :-) It monitors 2 water levels in the tank of a heat exchanger. Minimum and way too full. Unfortunately the current is much too high, so the electrodes erode quickly. Still it was fun building :-)
 ugly front side |
 quite clean back side |
 Encoded plug ;-) |
 damaged electrodes |
And for all of you who’ve always wanted to know what it looks like UNDER a laser table take a look:
The power supply is already missing, as we're moving out... It's about half of a full sized freezer, and cubic.
Much more interesting should be what’s ON the table :-)
 It is called VERDI, as it is a green laser. Just 2W though (cw) ;-) |
 The big one has about 35W of green light (Q-switched, 1kHz). |
→ Update : 13.10.2008 – 19:22
DONE. Labs cleared, AC turned off, lights out.
No related posts.
