marcoreps posts
Posts: 464
Files: 717
Ultralow Noise Amplifier
Not sure what happened here 🤭 this project started as 'ts80p.prproj' but the soldering iron didn't offer a whole lot of talking material. So instead I started rambling about noise ... for 25 minutes ...
Mailbag + High Frequency Light Motion Pictures
Mercury Uptime Counters https://www.youtube.com/watch?v=Cxj399LuX1M
Quick look inside Advantest R6581T 8.5 Digit Multimeter 😇
Some more photos https://photos.app.goo.gl/qZpnuCFHjcmhG4467Some light reading about K2002 ADC: http://41j.com/blog/2019/01/notes-on-the-keithley-2002-adc/If you happen to own a copy of The Art of Electronics: Check out 13.8.6 Designs by the masters: Agilent’s world-class “multislope” converters
Harmonic drive rescue attempt
Grafana sample of Solartron 7081, Keithley 2002, Advantest R6581T: https://snapshot.raintank.io/dashboard/snapshot/9Qa8EBDT4aJ2i2ya1xuwgn7dh5K038qj?orgId=2https://github.com/marcoreps/multiinstrumentalisthttps://github.com/marcoreps/lt1166_bob
0.004°C Temperature Controller
The previous posts are patreon exclusive and because they have fewer than 469 views I would like to encourage you to watch em 😇
Best high frequency light source ever
@ 6min 30sec U: UnlockI think that unlocks some of the calibration and eeprom programming functions.But it needs a password. If you haven't seen it on Discord yet, can you guess what it is?Hint: It's not 1234 000 password root etc ...German Strahlenschutzverordnung https://www.dgmp.de/de-DE/1008/neue-strahlenschutzverordnung-veroeffentlicht/
Stage 3 gear acquisition syndrome
( = you already have enough gear but it still keeps coming on it's own )Efratom Division: https://drive.google.com/file/d/1VMWcXvS_yZV_JUP9wHd2FFQ6hZv01kDB/view?usp=sharingLook what I found about that charge sensitive amplifier:
No high frequency light in here
Kreosan xray video: https://www.youtube.com/watch?v=fwl1JNoFdhgUpdated calibrator photo album: https://photos.app.goo.gl/6gq4PChaLmLDDLE38
(Almost) firing that big YAG laser
Happy involuntary holidays, hope you are all well!If anybody wants to come and pick up some YAG laser parts or that entire cabinet, let me know! I only want to keep the long black thingy.Some almost spoiler free calibrator progress pics - everything with a white dot is new: https://photos.app.goo.gl/NLDhay4cDZ6gujGn7
High Frequency Light sensor & more
See also: https://www.youtube.com/watch?v=VFFrQPCQO14I had to shuffle some trivial details in this post a bit to keep the sources safe. They are not messing around in the high frequency light business 🕵️
Fluke 5700A is alive 🥳
Few more spoilers if you want them: https://photos.app.goo.gl/FDRX3KMmxURfZ9D26I am documenting and reconstructing a few things here: https://github.com/marcoreps/5700A
TS100C and Fluke 5700
I have a spare board, a TS100 husk and a bunch (not all) of parts. If anybody wants them, leave a comment and I'll send everything to the comment with the most hearts!
Non-festive box opening I
Starring: Ludlum Model 12 alpha particle detector / rate meterAnd: Coherent laser power meterDiscord; https://www.patreon.com/settings/appsSampled Y12 vid: https://www.youtube.com/watch?v=N2pOLpm54sQ'Extreme' alpha particle detector variant: https://www.youtube.com/watch?v=-8GlzUjYazsAngle grinder disks: https://www.ebay.com/itm/133158619576Alpha smoke detector https://www.banggood.com/Ion-Chamber-Metal-Geiger-Counter-Check-Fire-Alarm-Security-System-Source-Smoke-Tester-Sensor-p-1260273.html
TIG Welder Repair and much more
Those HV film caps are 3 EUR per piece incl. shipping in Germany rn: https://www.ebay.de/itm/372638744980
10 Hour Autobahn Trip
^ and nothing else! Next step will be a careful power on, some cleaning and maintenance, ...
30 min Spindle Marathon!
New and improved version!
Fiber Laser Repair
Wow this one took forever! I kinda made the CNC Spindle video at the same time, so that will also be finished soon. And then I have quite a large backlog of small stories about TIG welders, particle detectors and Japanese high voltage test gear 😵
EDITED: Goofing around with a 10k$ Keithley
This is a loaner for now, so no teardown :( But it is a great source of inspiration and motivation.EDIT: I've added a few more things and will probably make this a public vid right before the fiber laser!
Fusion Splicer Repair
Outside + Upper floor : https://imgur.com/a/G5l5SpTLower levels: https://imgur.com/a/td4QXEwStiched together hi-res schematic WIP: https://www.easyzoom.com/imageaccess/e30976b7a0d04a04b959f8ce785d2395
Power supply from the TS100 company
spoiler: it's brilliant
.5µm sensor + .3µm actuator + ~1µm fiber laser
Actual B7000 instructions on the box: https://www.youtube.com/watch?v=xEsJ3J3H6ZUTo flip out the top floor of the fiber laser I'll have to unwind some fiber from that slanted spool ... and it creeps me out. My instinct says that it's important, because they wouldn't do that for no reason. But on the other hand the fiber is just held on with double sided tape, so it can't be *that* critical, can it? Any fiber lazer experts around?
LinuxCNC + Mesa Card Video
EDIT: Thank you for the feedback! I've smoothed over a few rough edges anyway :)Guys and gals, is this too boring for a public release? I was aiming for a little demonstration of a LinuxCNC + Mesa setup and its advantages but that made it neccessary to cover all the basics that probably everybody knows already.I am adding some oscilloscope jitter histogram measurement and some VFD and servo load displays to the LinuxCNC UI today, maybe that'll make it a bit better?
