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salvagedcircuit

56 karma · joined April 26, 2017

Electrical Engineer | Hobbyist | Camera Enthusiast | Wire Wrap Aficionado
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salvagedcircuit··on The intracies of modern camera lens repair (2024)
I occasionally take this approach, but it's a chore to scrub through a few hours' long video to find the right frame. It can save your bacon though! I filmed some teardown shots when I repaired an alexa mini. That is a true masterpiece of a camera :D
salvagedcircuit··on The intracies of modern camera lens repair (2024)
That sounds like fun. I took a few courses in optics because I wanted to explore the art of lens making. Hats off to you sir!
salvagedcircuit··on The intracies of modern camera lens repair (2024)
The Nikon AI/AI-S era lenses are fun to repair, but this sigma was not too bad. I've repaired some very intricate panasonic / olympus consumer lenses that were far more complex.
salvagedcircuit··on The intracies of modern camera lens repair (2024)
Thanks for stopping by! :D
salvagedcircuit··on The intracies of modern camera lens repair (2024)
Thanks for the kind words!
salvagedcircuit··on The intracies of modern camera lens repair (2024)
Thanks for the input about Rodico! It sounds pretty useful. I've used mounting putty / blue-tack when assembling PCBs, but not much more than that. I've seen the card board trick used many times to ease in painting engine valve cover bolts.
salvagedcircuit··on The intracies of modern camera lens repair (2024)
A large focus throw and more importantly, focus consistency, is paramount for cinema lenses. When you rack focus, the lens needs to show the same field of view every time, no questions asked. The early red pro cinema lenses had a design flaw where the focus rings would come loose over time and ruin shots. Someone clearly forgot the threadlocker.
salvagedcircuit··on The intracies of modern camera lens repair (2024)
Indeed! I've had the privilege and honor of collimating a Cooke s4i. It's a thing of beauty, joy forever.
salvagedcircuit··on The intracies of modern camera lens repair (2024)
Thanks! After many lens teardowns with screws of varying lengths and magnetism, tape is truly king!
salvagedcircuit··on The intracies of modern camera lens repair (2024)
If companies could just distribute the repair manuals I'd be happy as a clam :D I'm all for automated repair!
salvagedcircuit··on The intracies of modern camera lens repair (2024)
Thanks for the kind words! The ifixit screwdrivers I linked are JIS compatible.
salvagedcircuit··on Show HN: I made Gyroscopic Gyro Sandwiches
Gordon Ramsay suggests you season and cook lamb evenly on all sides

>> challenge accepted.

Nice work.

salvagedcircuit··on 1990s Millport CNC Vertical Mill Revival
Thanks! The repair was a bit involved and drawn out, but well worth it :D
salvagedcircuit··on 1990s Millport CNC Vertical Mill Revival
I just revived a 1990s Millport CNC mill from a non-functioning brick to a floppy-wielding chip thrower. I detailed the troubleshooting process and PCB level repairs needed to make this DOS based servo-drive CNC shift some 1s and 0s and throw chips again.
salvagedcircuit··on Hardware FPGA DPS-8M Mainframe and FNP Project
Looks like a very clever project. Terasic makes some nice dev boards. Best of luck to you Dean!
salvagedcircuit··on Show HN: I made a site for finding cheaper alternatives to pricey software
Neat. Too add a few: Blackmagic Davinci Resolve is a free alternative to Adobe Premiere, but limited to 1080p exports (not a big deal for most). Dia works as a partial alternative to Microsoft project. Kicad PCB is an excellent alternative to eagle. FreeCAD is a free CAD package as well.
salvagedcircuit··on The Death of NYC Congestion Pricing
How do you have an article about commuting into NYC without even mentioning Long Island or the Long Island Rail Road? 0_____0
salvagedcircuit··on Xbox that never was: detailed look at 'Keystone' cloud streaming console design
It's a DVR! No, it's a DTV box! No, it's a HTPC! Seriously, it baffles the mind that you can patent a box that features a few standardized ports. Zac has been on a roll lately looking at patents. The surface duo 3 patent hinted at a very funky stand / magnetic attachment system:

https://www.windowscentral.com/hardware/surface/this-is-micr...

salvagedcircuit··on 25 years of video clips gone as Paramount axes Comedy Central wesbite
Incredible. Server and compute costs continue to plummet yet keeping an archive around is a financial burden. Sadness.
salvagedcircuit··on FCC rule would make carriers unlock all phones after 60 days
This would be a warm welcome to the frigid waters of the phone industry. Now force the OEMs to release all radio related firmware for each phone too, and we can finally own our phones again. I'm not too old to remember completely unlocked, feature complete CyanogenMod android phones. LineageOS is completely useless without VoLTE support.
salvagedcircuit··on A modern 8 bit design, built using 1950s thermionic valves
This guy is the right kind of crazy. This is truly what the internet was made for: sharing our outlandish, over-the-top projects with others. Awesome writeup!
salvagedcircuit··on Agilent 2000a / 3000a Oscilloscope NAND Recovery
There's always more to discover! Thanks for the kind words.
salvagedcircuit··on Agilent 2000a / 3000a Oscilloscope NAND Recovery
Thanks for the input! That is a pretty reasonable conclusion. I was surprised there was no mention of wear leveling or garbage collection in any of the spear documentation when that's essentially assumed today. Wild.
salvagedcircuit··on Agilent 2000a / 3000a Oscilloscope NAND Recovery
Thanks! You sir are correct. I must have been rambling too much on a side tangent. I'll fix this shortly. Optical encoders are most excellent.
salvagedcircuit··on Agilent 2000a / 3000a Oscilloscope NAND Recovery
Woah, thanks for the comparison. I'm a huge fan of the signal path and marco reps, but I don't think I've gone that far down the volt nut path yet. Maybe I need to fix up a broken 3458a for my next writeup :D
salvagedcircuit··on Agilent 2000a / 3000a Oscilloscope NAND Recovery
Thanks. I like to keep things lightweight :D
salvagedcircuit··on Agilent 2000a / 3000a Oscilloscope NAND Recovery
Absolutely! I find repair to be therapeutic at times, like repairing a stuck or dirty 1970s film camera lens. It's usually a straight forward repair, it just takes a bunch of patience and attention to detail. This repair was far more complicated than that, but it was worthwhile to get another instrument working around the lab.
salvagedcircuit··on Agilent 2000a / 3000a Oscilloscope NAND Recovery
Thanks!
salvagedcircuit··on Agilent 2000a / 3000a Oscilloscope NAND Recovery
Thanks! It was well worth it :D
salvagedcircuit··on Agilent 2000a / 3000a Oscilloscope NAND Recovery
Thanks! Go for it or contact Keysight to see if they will cover it. Good luck!
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