Sunday, December 13, 2009

Found objects I

Yesterday on my way to the supermarket I found this interesting looking light assembly laying along side the road:


Which can be used for a wide variety of things,the most obvious some kind of light sculpture.Unfortunately the glass is cracked,but thick enough so that it still stays in place.Today I started on a project using this object.

Saturday, December 12, 2009

Another Pummer nearing completion......

And that should end this Pummer building extragavanza for now.In this one I used an electroplated steel base,an electroplated spring,lightbulb and copper tube.
The circuit is the "old" one with a purple LED.

Sunday, December 06, 2009

P.B.S.



 

Or Pummer Building Spree,which is what seems to happen now.I'm building three at the same time:one is with a spring and lightbulb,another one is with a porcelain insulator,copper tube and brass nut and the odd one out is a robot holding a lightbulb.
After these I'll probably build two more and then move on to something different.

Wednesday, December 02, 2009

New pummer,new solaroller (WIP)


I just (well a couple of days ago)made a new pummer.My first one with the improved circuit by Wilf Rigter.I made a few changes though:
the 1 uF capacitors are now 2.2 uF,the 1000 uF capacitor is 6800 uF,the 10K resistor near the LEDS is now 1K,the 47K resistor became a 33K one and it is a single LED Pummer.
The most noticeable thing about this pummer is the very large capacitor which is also part of the body.
I haven't attached the solarcell yet.
Then,a new Solaroller and another first:my first direct driven one instead of belt driven.And also the smallest one I built to date.The circuit is a 1381 freeformed one,the body came from a recordplayer-stylus case.The solarcell is missing here as well.

The new Pummer with the improved circuit by Wilf Rigter and some changes by me.

Wednesday, November 25, 2009

New uses for old circuits.......but not as intended


After testing the Pummer circuit in a Solaroller I now know why you don't see them:because it doesn't work.What happens is that the Solaroller moves forwards and backwards with each "pumm",and while this makes for interesting behaviour it won't win you any Solaroller contests.
So,I'm keeping the one,already finished,one but added a LED which doesn't pumm but flashes,making a mobile LED flasher.
The others will be finished with the normal solar-engine circuits.

Tuesday, November 24, 2009

New uses for old circuits


This last weekend I had a revelation......(scary)It occured to me,while I was building a Pummer circuit,that the circuit could also be used for other non-LED projects.Like movement(probably done before)and in a Solaroller(maybe not done before).
So I started making three Solarollers with Pummer circuits,each with a different capacitor and one or two of them will be using Wilf Rigters improved Pummer circuit.
Now all we need is some sun.........

Thursday, November 19, 2009

Changing rooms...... III





The big project is finished(or has been since a few days)and I have finished a smaller project as well:the industrial looking one with a valve and gauge.
The valve I found at work,the gauge came from my favourite antique place,add to that some copper pipe,old brass fittings and various metal pieces I saved in the past.