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it was and i thought i posted it in the wrong section so i posted here and ive been trying to delete the old post but im new on here so im trying to figure it out sorry bout that.

oh so you did try a 555 timer? im just waiting on a freind or when my dad buys a new ban saw blade so i can cut my hdd's down to size so i can mount them and once i do ill have to start playing around with it. did you set each disk lens holder mabob as left and right speakers like both ground to...

this is a spirograph ive built lately and i hope to make it better soon but i cant play around with it too much because its for an electronics competition. i used 555 timer circuits to pwm the pc fans which worked pretty well. i got my fs mirror out of a rear projection tv. and my 50mW green...

o yeah and for the oscilation try a 555 timer or in conjuction with a flip flop circuit thats what im using right now to build and hdd arm scanner that way you can play with the frequency just like a 3 or 4 mirror spiro.

i would actually create a continous frequency for the x axis and then input the music to the y axis. this is actually new to me i love it when people put together something that nobody tried before good job. this gives me alot of inspiration for more laser projects :gj:

i would have waited for garbage day :) free potentiometers everywhere.

o yeah and try two good triple a's to find the right contacts you should be able to trace them just by looking at the ribbon strip and guessing or there should be wires soldered to the ribbon strip right on the arm and thats an easy way to find them

im actually building one of these right now and all you have to do is find the right traces like charlie bruce said and with the polarity one way it will pull to one side and when you flip polarity it goes the other way. yes you can use and audio amplifier as an input but im going to use some...

yeah i know right i was surprised when i looked at it and saw the specs. but the thing is its a pretty handy piece of equipment its self leveling and once its spinning you can move the beam line and my dad said he was running it when they were building a meijers grocery store and it was hitting...

yeah they do require higher voltage because the circuit in the fan is running the brushless motor only runs from 5-12 volts i think for mine so i had to get the variability to match up in my circuitry to just go in that range only. thanks

my dads been in construction for a while and he pulled out this laser grader or marker and was showing me. theres a 5mW laser mounted in the head which spins and makes a line across the wall,floor, and ceiling. its used to get straight walls and ceiling tiles and he said 10 or so years ago it...

thanks think you could tell a few people about the vid and this thread that would be much appreciated

yeah i wouldnt have realized that cuz ive only bought one and that makes sense because the only other ones ive seen have been pulled out of sleds and those are 100mw and up right?

im pretty sure you can get the same effect with slowly rotating textured glass

once i get back to school after spring break i can show you the circuit i used for pwm control

pretty slow if you use your fingers :wtf: lol well in my circuit i dont have much control on lower speeds<----room for improvement especially in the lower end but i know you can get them going pretty slow but thats just from memory ill have to do some more experimentation and get back to you. in...

:thanks: i used the pc fans because i liked the speed and look. right now im applying the same circuitry for smaller dc motors like yours. and i got my fs mirror for free out of the back of a projection tv along with the fans and most of my switches but i did order parts because this is for a...

crap im dumb forgot the vid link on there its up there now

this is my first spirograph and is what i consider my first working prototype. i plan on making alot of improvements, better speed control circuitry, better variability in speed. im using my 50mw green laser module from laser lands a good module but apparently im cooling it too much and might be...

its not a total beam divergence its like what wannaburn was showing us in his video im having some computer issues but ill get my vids up i happened to catch it when it was happening.