General > General Technical Chat

Show us your unfinished project!

<< < (5/7) > >>

RoGeorge:
They look like small solar-cells with a LED on the other side, like some sort of garden solar lights.  I still don't get it, what are those?

bd139:
Found a picture of a pile of things I never finished, mostly receivers.



Also got about 2/3 of the way through this and got bored. This one I might resurrect. It drew a bouncing ball on an analogue scope display.

RJSV:
RoGeorge, thanks for asking:
Please also see, DODGY SECTION, first page, has Optical Bench Redux.
  Those are cheapo Solar Garden Lights, each having a small, shorter version of an AAA rechargeable.  They have a 4-pin control IC, that, obviously, has some kind of voltage comparator, front end, that switches an inverted output,...at 222 khz near square wave.
So, never mind, that it's AC output, I just call that an 'ON' state, and seems like input is also a light lift, as that 222 khz isn't seen (as AC), but rather, a simple, raw solar cell just gives a steady DC on (1.2 to 2.0 volts in direct sun), so I'm considering that as similar enough, to DC in DC out ...(even while that's not, technically, true.)
Lots and lots of possibilities, like a 'Liquid Suspension' module, no wires, no power (no external pwr wires), and using a quite powerful, optically linked, component. 
   Smart 'dust', self-organizing, likely proposed many years ago.

Peter Taylor:
My unfinished electric buggy. It was entered into the Element 14 Design challenge but not followed through.

RJSV:
   I've posted here before (pls see June 26), but having so much FUN with the unique packaging, that I hope others get inspiration, also.
   While this 'strays' into electrical / electronic components, the emphasis is to study optical logic, and convolution for imaging.  For example, I take a header for LED output, using that for simple extension of a 'supplement' LED, to bring that logic signal to activate a following gate (individual lawn light).
The saving grace in this whole effort, is fact that these gates act as inverters, and plus they can do analog summing, at the little solar voltaic cell.
Photo shows partial assembly; the middle 'wall' of gates is intended as 4 by 7 or 28 total sensing gates.

   The whole structure is a 3-D network...but notice, the DIRECTION of signal flow or travel is virtually all one direction, (with occasional lateral connections, from column to column.).  I think, maybe, that some biological neural systems are more random, with signal directions, but actually the Visual system do seem to have a 'lateral' layered structure with very defined direction, for the mass of RETINA nerves.
All this visual process stuff makes me want to study biosciences more (I've purchased the book on 'Neurology fro Dummies).
- - Rick B.

Navigation

[0] Message Index

[#] Next page

[*] Previous page

There was an error while thanking
Thanking...
Go to full version
Powered by SMFPacks Advanced Attachments Uploader Mod