Activity Stream

Discovered a goldilocks (not too thin, not too thick) mylar inside a flat bag. Used mounting spray tacky glue to fasten a piece onto a black aluminum plate. Works. Recorded live on the APC40 mkii, unrehearsed, no DAW. I'm applying a .05 Hz colormod to slowly mix colors + .05 Hz circle to keep...

whoa nice! sadly i have no Mac to test with or i would... is it OFX that makes it look like Liberation?

... yes, a pretty interesting application, if you have the equipment ... luckily I have a 30W MOPA from JPT :cool: Maybe even more interesting -- my actual setup has a scanner+optic with 110x110mm scan area and a spot diameter of around 35µm ... actually ordered a different telecentric optic,...

Just watched this, was reminded of this thread, figured VDX & Steve might find it interesting, and decided to share 😎

... ah, OK - this type behaves different to my expectation - but then the absorption of the laser energy of the mirror itself is way higher, than with plated ones ... *** EDIT *** - was thinking about such mirror balls:

These for example... https://www.ebay.co.uk/itm/297492495669?itmmeta=01K7EGXPS40XP3Z6JDQKCERVPR&hash=item4543ef3d35:g:PDoAAeSwIQ9ogiJ There are no space between mirrors, it's made from durable PVC. I've messaged the seller. Just think it's risky but I'd love to try.

... depends on ball material, spaces between mirrors (absorbing area and vulnerability for laser-wavelength), energy density of the laser and exposure time >:)

Hi Roj. I hadn't thought about the trade wars. I've literary just put my laser money all on a coin called FARTCOIN to ride this current crypto wave of recovery so I can afford a Pangolin discoscan and perhaps another laser. I'm in the UK but no doubt it will affect me too. When is the...

I upgraded to OPTlaser's PD3000 RGB projector with low divergence optics and DT-40 galvos. Very pleased with the beam quality & price, I ordered an identical W3000-RGB module for my 2nd DIY projector build. Their sales staff and customer service have been excellent. However, they have...

Looks like you've already found Beyond's color balancing settings. Assuming your projector(s) have analogue diode drivers, most likely those driver boards have trim pots for balancing colors. But, it is important to monitor amperage, against the diodes' mfr specs, while making those adjustments to...

Yup, mine came in an ELEGOO UNO Starter Kit I got 3-4 years ago. I ignored the little stepper thinking it would be kinda jerky in its movement...until I recently saw some YTs showing it in action. For me, its big selling point was it being a geared down 32-step-per-rev stepper by 64:1 yielding...

Yes, the 28BYJ even with drivers are inexpensive and have been very popular within the Arduino & Raspberry Pi maker communities, having been included in their starter kits over several years. If it's a small stepper you're after, check out these tiny li'l beasties. I've used similar ones on...

For the curious, here's info in the older image rotator schematic that might be part of what is described. Kevint: I have only been able to get the transformation shown in your video2 when using GS galvos open loop. But thanks to your work I think I now see the spiral is being amplitude...

Glad to hear your news, Kevin. btw: I also love your 3D printed slider knobs and panel.

TheHermit, Your welcome. Greg, here is a scope image. This is sbout the best I could get with my scope. Also, here are a couple more 3D print images. Lasermaster1977 and Laserist. With your advice, I think I have a game plan. More to follow once I test everything out. Also, your input...

Thank you for the detailed info and taking the time to video demo how video 8 was created. Great reply, Kevin, and very much appreciated. Hopefully Lasermaster1977 or others can help to resolve your voltage interactions issues. BR Roj

Maybe this insight will help you understand why what you seeing is happening. I thought I could just pass a signal through the 633 if the AM signal was turned off. As you've found out, nope is the answer. Here's why: The AD633, by design, is a 4-quadrant multiplier which means it will...

Thanks Laserist. I think that is what I am seeing. Here is a drawing of how I am currently using the AD633 for a VCA. I thought I could just pass a signal through the 633 if the AM signal was turned off. But in that scenario the output goes to 0V. However if I put -15V on the OpAmp AM...

Nice work. Just from memory - I believe the Laser Images image rotator had a high impedance 10v signal always present that was swamped by the lower impedance rotation signal when present. Alternatively you could use an analog switch in a DPDT configuration, or a couple of 8 to 1 analog switches to...

Lasermaster1977: Thank you.here is the basic lay. I'll add more detailed schematics shortly Greg: The 3D printer is a blast. I'll include some more pictures. I'm using Fusion CAD for my designs. Not using the G120's at the moment. I got frustrated with the scan amp. For now, I took the...

Linked you on Facebook Laserist Group. Steve

No quite the same effect :-) Not bad plan B though

I've been putzing around on and off from one project and thoughts on numerous others over these many months, never getting much of anything done except lots of CAD drawings of components and ideas. Its been harder to stay focused on any one thing, sorry to say. But, good things (hopefully) come...

Yes, very nice work and cycloids, Kevin. .MP4 Workaround tip: With a Gmail account, you can upload your .mp4 video files onto Google Drive. Right click onto that file, click on "Sharing", "Share with anyone with the link", and "copy link". Then, when posting your message here, click the 'video'...