iiinova — where your digital self keeps evolving

M-Labs Scientific Instruments @m-labs.hk · 21/06/2026

When a site slows down or returns errors because of your bots, it also does so for everyone else you dumbasses. Also you're causing substantial constant CPU and IO load to every gitea instance.

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M-Labs Scientific Instruments @m-labs.hk · 08/06/2026

ARTIQ-10 (currently in beta) now supports multi-channel CoaXPress, enabling the low-latency connection of cameras such as the Hamamatsu C15550-20UP directly to Kasli-SoC.

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M-Labs Scientific Instruments @m-labs.hk · 12/05/2026

To celebrate the 10-year anniversary of ARTIQ 1.0, we offer 10% discount on Sinara hardware quotations for 10 days (May 12 to May 21 2026 inclusive), and quotations are valid for 30 days. Excludes Booster and AFWS renewals.

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M-Labs Scientific Instruments @m-labs.hk · 20/04/2026

ISP issues are resolved and email on m-labs-intl.com is back!

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M-Labs Scientific Instruments @m-labs.hk · 03/03/2026

Actually it might be beaten by the new optogalvanic front-end of the next post.

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M-Labs Scientific Instruments @m-labs.hk · 03/03/2026

Barium ion spectroscopy at 493nm with improved low-noise optogalvanic front-end. You don't even need a lock-in amplifier at this point :D Top curves are raw ADC data.

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M-Labs Scientific Instruments @m-labs.hk · 18/02/2026

XLRPD: Low-noise large-area photodetector with XLR interface and phantom power. Place near hollow cathode lamp, shoot laser into lamp, and plug into audio interface for DSP lock-in spectroscopy. Easy to set up and unbeatable performance/cost. git.m-labs.hk/sinara-hw/xl... git.m-labs.hk/sb10q/sndlock

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M-Labs Scientific Instruments @m-labs.hk · 21/01/2026

The amp schematics github.com/m-labs/spect... "NTE" transistors are just rebranded and expensive Sanyo parts, but I didn't know better back then.

github.com

spectropak/hvamp_proto3 at master · m-labs/spectropak

A universal controller for quadrupole mass spectrometers (RGAs) - m-labs/spectropak

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M-Labs Scientific Instruments @m-labs.hk · 21/01/2026

Among other fun stuff, I could easily plot the stability diagram of protons. Perhaps I should fish out the results from my archives and post them :)

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M-Labs Scientific Instruments @m-labs.hk · 21/01/2026

Years ago I played with HDTV transistors and a second-hand commercial RGA tube. Designed a broadband amp with 600mA capability and 20MHz large signal bandwidth at 120Vpp and used a pair of them.

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M-Labs Scientific Instruments @m-labs.hk · 21/01/2026

Some RF source designs for quadrupole mass spectrometers do the latter, but only at 2MHz or so (AFAIK).

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M-Labs Scientific Instruments @m-labs.hk · 21/01/2026

Do you have references on that? There's still the trap capacitance issue, resonant designs solve it by recycling the charge. And switching power MOSFETs above a few MHz is nontrivial. For max efficiency, solution is perhaps square wave into a LPF loosely coupled into a LC in parallel with the trap.

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