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marcoreps

marcoreps

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marcoreps posts

Mobile power station powering my whole lab for a day

Pretty excited to put a small damper on all the energy-crisis-fearmongering with only 4 solar panels. There may still be big problems ahead for industry, but at least the Reps Labs are safe from bl...

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Uninterruptable power supply module for my 10V standards

That concludes the ADRmu preparation

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Building a Thermal Test Chamber for XXL Arroyo TECSource

New devices that just work are boring, but Arroyo didn't want to send me a broken XXL TECSource

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Unbox Therapy: Siemens Solar Inverter and Thermal Voltage Converters


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So uh I bought 11.75kWp worth of solar panels ...

so that the PPM farm can remain in operation independently of electricity costs. Maybe there's even enough power for a little AC unit 😎

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Soldering bench upgrade Ep2

Double-kill

Small nuanced update on 14. April

Second small update on 28. Sept

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Soldering bench upgrade Ep1

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eXtReMe iSoLaTiOn

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Reps Luxury E-Waste Disposal Services GmbH

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PPM citadel in the Harz national park?

All the photos: https://imgur.com/a/sEUIJK2

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Chinese vacuum cleaner review like the good old days

Happy holidays πŸŽ…πŸŽ„

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What did Keysight do to the 3458A?!

Updated on January 3.: A few more little things after external proofreading

Updated on April 16.: Final edit + we finally have a release date! May 1st

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New lab candidate & unboxing bonanza

Freiberg house album: https://imgur.com/a/GS6iFdK

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First 'light' with the huge microfocus source!

I also haven't forgotten about the higher res GbE image sensor I've shown briefly ... but that is somehow stuck in a resolution-limiting 'region of interest' mode and I haven't found out yet how to...

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Importing PPMs from the national metrology institute

Finally I got the chance to measure my 3 electrical standards with freshly calibrated meters. TWICE 🀯

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Goofing around with 2 thermal cameras

This is probably not the final version of this vid, because there's some blatant software piracy going on at 8:30 which might get me into trouble 😬

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HP 3458A "repair" and inner workings

Probably my biggest video project yet ... probably still lots of mistakes to find and correct 😬

...

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Thermal Mailbag: Heat flux sensor, Arroyo, Prema

Last house candidate: https://imgur.com/a/yJfh7IY

Arroyo 5400 teardown: 2021-08-07 22:50:55 +0000 UTC View Post

Quick trip to Switzerland

... and back home with a full trunk πŸ˜‡

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Draft: 10V Standards: Fluke 732A vs LTZmu

The Fluke calibrator saga continues. To import accuracy we need 3 transfer standards with good short term stability: 10V, 10 kOhm and 1 Ohm. In this video we are looking at 2 different 10V approach...

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Should I move into this ruin?

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Detecting Cosmic Rays with a Raspberry Pi

It looks like I can't give stuff away any more. Nice. Completely reasonable and sane policy there πŸ™„<...

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Road trip and first look at high frequency light source

To be continued ...

...

soonβ„’

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Golden Boi Teardown and more

Love that VPG channel with their 80s MS-DOS software https://www.youtube.com/watch?v=0dGZfz81Rfg

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"0.1 ppm" open source 8.5 digit voltmeter from CERN

Friends, thank you for your patience, sorry that this took so long!

Got enough raw footage for 2 more videos 😡

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Some merry crisis packages

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Little OSMU Update

I made an LT1166-based power output stage. Once finished it can be operated with a few ADCs and DACs to create 4-quadrant devices.

First OSMU idea in Siglent PSU video: 2020-11-19 21:45:11 +0000 UTC View Post

Quick overview of the Advantest R6581T Multimeter

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Testing the Calibrator with Keithley 2002

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Fluke 5700A repair

Finally ... uh almost done πŸ™ˆ

PWM DAC needs some more love and a conclusion at the end is missing.

Anything else you'd wish more details about? Editing the final version now

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