The long-term goals
marcoreps posts
Printed a lens, video tonight + go vote!
Would you please click 'Load all comments' twice on the previous post and vote for comments? I want a clearer result :)
2018-10-28 17:38:38 +0000 UTC View PostGiving away 5 Unisolder 5.2 boards
Got into a little bit of panic, because I promised to finish this SLA printer video by 28. Oct ... it's almost like friends birthdays for which you have an entire year to prepare but then they still manage to happen suddenly 😓
Anyways, you know the rules: There are none. Write whatever gets you...
2018-10-25 18:35:07 +0000 UTC View Post
Second multimeter video with corrections
You may have already seen most of this. I have included a statement from Brymen at 3:09 and improved a few minor things especially after 6:10 and 7:25.
It's suprisingly hard to make the new mic sound good, it picks up way too many unwanted details like the neighbors lawnmower or my own mouth-s...
2018-10-18 07:27:52 +0000 UTC View Post
Split the multimeter video into 2
Brymens manual soldering is still under investigation, so I've taken the BG one only and added another product to round it off. New stuff starts at around 4:05 min
2018-10-15 07:10:02 +0000 UTC View PostFirst CO2 laser test fire
Getting the super cheap 40W Chinese laser machine is probably the best starting point for a good machine. Tediously accumulating individual parts is neither cheap nor fast
2018-10-12 17:33:59 +0000 UTC View Post
Multimeter medley
Edit: Third revision - I am happy now with a few small corrections. Welectron hinted that the ugly manual soldering is unusual, I am still mentioning it, but shorter and with an optimistic connotation.
Just a draft, I think this one may be a little bit too fast for everyone to keep up. That and a ...
2018-10-07 05:50:35 +0000 UTC View PostAnyone member my suggestion to Elektor?
Made a post about that around March:
Also: Neat little high CRI video light from BG
Also: Multimeter medley later today or tonight
2018-10-06 15:54:13 +0000 UTC View PostGiving away a new ScopeMeter prototype
MUSTOOL MT8206: It works well as a beginner-DMM, the scope function still has some flaws! The comment with the most likes by next Friday wins!
2018-10-05 10:32:46 +0000 UTC View PostDIY servo motors for the laser machine
Found a particularly nice NEMA-brushless-motor on eBay: 57BLF03
It's delivered with hall effect sensors, which are no good for precision motion control. The short shaft stub is not quite enough for proper mounting of a CUI AMT102-V encoder, so I had to 3D print a new adapter...
2018-10-03 21:19:18 +0000 UTC View PostWhat about daily posts?
Thank you all so much for staying or joining :)
I've received a few complaints about the posting of unedited videos. People got the impression that I just lovelessly dump footage and forget about it. My intention is to make a small, mildly interesting post semi-daily, sort of a better twitter. You...
2018-10-02 18:29:51 +0000 UTC View PostPredecessor of the LTZ1000
Not quite as compact, but a few more independent voltage references AND a lot of unpopulated spots in this beast. It's basically a precision oven, that tries to stay at 30 +/-0.1 °C to keep the weston cells happy. It needs a proper restoration tho, I've already found 1 electrolytic cap from 1986&nb...
2018-09-27 19:49:13 +0000 UTC View PostGiving away 3 KX LTZ1000 reference PCBs
Only slightly scorched by 500°C hot air gun 😇 jk they are brand new ofc
The 3 comments with the most likes by next Sunday win. Please participate in the vote, if there is a...
2018-09-26 14:50:07 +0000 UTC View PostUltra stable voltage reference + Maker Faire
I am getting moo metal today, will post about that later!
2018-09-25 02:29:51 +0000 UTC View PostI may have been snakeoiled
Back in the days â„¢ mu metal ( https://en.wikipedia.org/wiki/Mu-metal ) has been applied to oscilloscope display tubes so that their magnetic fields would not interfere with the sensitive circuitry. Mu metal is solderabl...
2018-09-22 11:41:26 +0000 UTC View PostMy first FPGA steps with a Xilinx Zynq
So this thing is supposed to become my OSMU controller? I am not quite convinced yet and am hoping to see some suggestions from smarter people in the comments :)
2018-09-18 20:47:35 +0000 UTC View PostThey didn't expect the LTZ1000
So the Schlumberger Solartron 7081 can only be calibrated via GPIB commands which neither me nor the Maker Faire stand had at hand, so we could only measure the voltage reference for now.
But one of the gentlemen from the https://www.ptb...
2018-09-16 13:08:48 +0000 UTC View PostKX Vref all packed up and ready for travelling
https://xdevs.com/article/kx-ref/
I am using a generic Hammond al enclosure and a sumpremely shielded Displayport cable. There are special RF absorbing materials which might be nicer than white packaging foam 2018-09-15 20:33:47 +0000 UTC View Post
Nice multimeter to go along with those probes
They are have some cool stuff over at welectron.com 😇
2018-09-14 15:50:58 +0000 UTC View PostGiving away the finest DMM probes in the industry
Probe Master 8017S courtesy of welectron.com
Show a picture of your current test leads or make something up to get the the most hearts on your comment, winner is selected on Sunday
2018-09-13 09:50:55 +0000 UTC View PostNot particularly thrilled to see another one of these
The waveform display is no longer AC coupled, which makes it a little bit better. No more transistor tester and a slimmer body. Slow DMM sample rate, but attractive display.
They decided to keep the 1000V rating tho, so we can at least make fun of it ...
2018-09-12 10:50:00 +0000 UTC View PostMade a curing bucket too ...
I'd like to get rid of the remaining red resin, so if anyone needs small precise prints, leave some details in the comments, I'll message you if I have capacity.
By popular demand I've also made a 'dont-miss' tag for patreon posts with good quality.
2018-09-11 17:29:54 +0000 UTC View Post