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HEY thank you very much, your right :) I was just confused because i tested it with a old mirror from my 2-motor spirograph, and the circle was ovaled on the wall (perhaps because perhaps the mirror was not exactly in the middle of the motor, so the mirror slightly changed its angle while...

I mean, would the circle be ROUND or would it be OVALE?

Hi, im about to build a 4-motor spirograph, and I always wondered something. If I point the beam on a 45 degree angled mirror, and the beam gets reflected by 90 degrees, will the circle produced by the mirror not be distorted on the wall?? Regards Pascal

yeah i watched some of his videos were there was a link to this shop... I also thought WTF 50$ for 473nm blue, also because the image is also blue and not 405nm peace

Can blue diodes be that cheap? Hi Powered Blue Laser Diode 150mW I'll post a datasheet of the diode later when I've received it I wrote an email to this guy. Greetz

thanks you very much! Doesnt the glass break when drilling a hole into it?

Really nice work Jayrob!! I now want to build one too, Ill buy the parts I need when I have enough money =D And a question: How do you mount these mirrors on the motors? For me that seems to be difficult... And can I ask you for selling these parts to me when I send you a pm? Regards Ultimatum

!!! Then I suggest this is was what Ive done wrong !!! And were do I close the circle? Between battery negative and driver negative? Thank you very much cheers

Thank you very much for all your answers!!! Yes I wired it correctly, but it can be that I touched the diodes wrong for a moment with the wires so they were damaged, since I dont have a host and I didnt solder it to the wires. I will try one more time with a 12V adaptor from my portable...

Can someone give me some hints? Peace

Hellooo I took up my work on lasers again after a long break...I've tried to get my phr's working again but it doesnt work either. Configuration is: -9 Volt battery, fully charged -rckstr driver set to 100mA with Testdummy It didnt work...dont know the problem, thats the question. But I...

Hellooo!! I'm also new here and I have to admit that this forum is also an excellent place for learning english, it's the only place I use it beside English lessons in school, but thats annoying.... Ultimatum greetz from switzerland

Ok ok.... so I did wrong with measuring the current direct from the driver - and + output without test dummy...?

Hey, thank you for your help! And next step, set the current? Peace

I NEVER used the testload! I set the current without diode or testload, is that wrong? I'll take some photos!

SUMMARY: Requirements: - 9 Volt Battery - Adjustable rckstr driver from shop.stonetek.org - 3 phr-803t diodes procedure: - Set the driver to avg. 100mA with analog Amperemeter - Read the voltage with analog voltagemeter without diode ( 9 Volt, as expected) - Connected diode and read voltage...

Ok, I never done that before, but can it be that i damaged the diodes without they had been emitting any light? thank you for your answers and your help!!

means?

I've tried this now with already 3 diodes, it can't be that all 3 diodes are shorted?!! Maybe order one preinstalled diode... I can't find another reason why it doesn't work, probably someone can help me?