rog8811
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- Jul 24, 2007
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I will try to answer a few of the questions raised. The only real workshop tool used was my lathe for turning the plastic mirrors ( for card making, ebay £1.50 loads left over for more projects), everything else could be covered with simple hand tools and a dremel.
The switch operates both motors, the first runs at constant speed for tunnel projection, the second one is variable to get infinate paterns, the controls were stripped out of an ipod dock/speaker/amplifier (ebay again £2 ish)...I just removed all of the componants and wired to it as required. On the subject of patterns, I have discovered that if I rotate the whole thing in my hand the motors change speed and hence paterns change without using the pot. I also cut down the the 4 battery holder, from the same ipod dock, to two batteries. I rejigged the connectors to get 1.5 volts with the two in parallel for longer life.
The motors were £2.50 each from ebay and came with the mounting clips.
When it comes to plans....well I had the radio spares box knocking around and checked to see if the batteries would fit, I had the cable gland and used a step drill to make it so that the greenie would fit, from there on it was just a case of making it up as I went along ...I cut a piece of thick cardboard and trial mounted the motors before fitting them to the base plate.
It is a very simple build, just needs time, care and around £10 ($20) to build, excluding laser pointer of course.
Regards rog8811
The switch operates both motors, the first runs at constant speed for tunnel projection, the second one is variable to get infinate paterns, the controls were stripped out of an ipod dock/speaker/amplifier (ebay again £2 ish)...I just removed all of the componants and wired to it as required. On the subject of patterns, I have discovered that if I rotate the whole thing in my hand the motors change speed and hence paterns change without using the pot. I also cut down the the 4 battery holder, from the same ipod dock, to two batteries. I rejigged the connectors to get 1.5 volts with the two in parallel for longer life.
The motors were £2.50 each from ebay and came with the mounting clips.
When it comes to plans....well I had the radio spares box knocking around and checked to see if the batteries would fit, I had the cable gland and used a step drill to make it so that the greenie would fit, from there on it was just a case of making it up as I went along ...I cut a piece of thick cardboard and trial mounted the motors before fitting them to the base plate.
It is a very simple build, just needs time, care and around £10 ($20) to build, excluding laser pointer of course.
Regards rog8811