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A walkaround of the show floor of the International Astronautical Congress IAC 2025 in Sydney Forum: https://www.eevblog.com/forum/blog/eevblog-1711-international-astronautical-congress-iac-2025-walkaround/ Podcast: Download

More mailbag! 00:00 – Tennismatic saw my repair video! 03:23 – Stickers 04:34 – Offerman Industries DC-DC Boost Converter Datasheet: https://www.omnionpower.com/assets/pdfs/windchill/data-sheet/abxs001_ds.pdf https://offerman.industries/products/32-54v-adjustable-output-dc-dc-step-up-boost-converter-8-16v-wide-input-65w-output 05:59 – Bypass Capacitors in Parallel? 07:51 – Sexy clear solder mask 11:25 – Load Testing https://www.covingtoninnovations.com/ https://juniorgeniuskits.com/ 16:35 – Book: Electronic Experiments for Young Learners 21:52 – …

Was supposed to be a regular mailbag with multiple items, but this Haasoscope Pro was a 1.5hrs of raw footage adventure I have edited down to 45min, warts and all. So no other items, just this. TLDR; This open source 2GHz 3.2GS/s USB Oscilloscope needs a lot of work… This …

Another viewer question, can we identify this SMD component? https://x.com/Joostnietsmeer/status/1967941676061823401 Forum: https://www.eevblog.com/forum/blog/eevblog-1708-whats-this-smd-part/ Podcast: Download

Dave’s Goal Zero Yeti 400 lithium ion battery failed. Repair time. Forum: https://www.eevblog.com/forum/blog/eevblog-1707-repair-goal-zero-yeti-400-lithium-battery/ 00:00 – Goal Zero Yeti 400 Battery failure 01:32 – Hiccuping 03:28 – Teardown 04:47 – Failure hypothesis and potential solution 05:37 – The mains inverter PCB 06:43 – The control PCB 07:36 – Dual battery connectors …

Is a wrist worn multimeter actually useful? A review of the CZDANG K8 https://s.click.aliexpress.com/e/_opDFvin Use coupon code “doesntsuck” for 10% off the EEVblog 1980s pocket multimeter EEVblog 1980s Pocket Multimeter Forum: https://www.eevblog.com/forum/blog/eevblog-1706-k8-wrist-worn-multimeter-review/ Podcast: Download

The world’s first desktop personal computer wasn’t the Apple 1 or the Altair 8800. It wasn’t even the HP 9100A, it was the Olivetti Programma 101 from 1965! Computer Teardowns don’t get much more vintage than this. Forum: https://www.eevblog.com/forum/blog/eevblog-1705-the-worlds-first-desktop-computer-teardown/ Links: http://www.oldcomputers.arcula.co.uk/calc3.htm https://bellini.it/portfolio-articoli/mario-bellini-designer/ http://www.curtamania.com/curta/database/brand/olivetti/olivetti%20programma%20101/index.html https://ub.fnwi.uva.nl/computermuseum/delayline.html https://ub.fnwi.uva.nl/computermuseum/p101dl.html https://avvocatostella.com/wp-content/uploads/2015/12/Il-primo-personalcomputer-lOlivetti-La-Programma-101.pdf https://www.oldcalculatormuseum.com/c-programma101.html https://www.fondazioneadrianolivetti.it/en/p101-cecam/ https://www.inexhibit.com/case-studies/olivetti-programma-101-at-the-origins-of-the-personal-computer/ https://forum.vcfed.org/index.php?threads/olivetti-programma-101-documentations-and-experiences.1239428/ …

WTF is this design? The ANENG 626 Smart Multimeter Forum: https://www.eevblog.com/forum/testgear/aneng-626-multimeter-hell/ 00:00 – ANENG 626 Unboxing 02:14 – Charging + USB isolation test. CAT III 600V LOL 03:32 – Power on and UI 05:20 – UI Design Hell + Chocolate Wheel mode. Every child wins a prize! 06:26 – Continuity …

A repair of this Tennismatic T1000 remote control was way more interesting than I expected. https://tennismatic.com/main/page_products_ball_machines_t100_series.html Forum: https://www.eevblog.com/forum/blog/eevblog-1702-a-most-interesting-repair/ 00:00 – Tennismatic 1000 Tennis ball machine remote control 00:53 – Battery snap ohms measurement 01:17 – Battery current measurement 02:29 – It’s a row/column thing 02:57 – Teardown 05:20 – Membrane …

The Insta360 Ace Pro 2 action camera comes with Ransomware out of the box. You MUST give them all your private data to register the camera through the app or it won’t work. I’m sick of this crap, don’t buy Insta360 or DJI products. And change your profile picture to …

The $599 Moku:Go from Liquid Instruments is an Australian designed and manufactured USB/Ethernet/WiFi instrument, with 14 instruments in 1, and a 4 channel power supply. Oscilloscope, Voltmeter, Logic Analyser, Waveform generator, Frequency Response Analyser, Lock in Amplifier, Laser Lock Box, Spectrum Analyser, PID Controller, Digital Filter, FIR Filter Builder, Data …

I found this no name fire resistant safe in the dumpster, is it any good? 5 ways to crack cheap safes: https://www.youtube.com/watch?v=Y6cZrieFw-k The art of high security safe locks: https://www.youtube.com/watch?v=I5ge4STdbkE How secure are electronic safe locks?: https://www.youtube.com/watch?v=HxQUKAjq-7w Cracking into a CMI security safe: https://www.youtube.com/watch?v=fj5IpTZunAk How high security safe locks work: …

Part 1 of the µTimer project, a versatile benchtop lab timer. Choosing the LCD, and getting two sample LCD’s running. One using a demo board, and one that needed to be hacked onto a Raspberry Pi. 00:00 – Benchtop Lab Timer Project 01:19 – It’s all about the choice of …

I scored this GW Instek APS-7050 Precision AC Power Source on Ebay, let’s check it out. Forum: https://www.eevblog.com/forum/blog/eevblog-1698-awesome-ebay-ac-power-source-gw-instek-aps-7050/ Podcast: Download

Why does this Uni-T UDP6731 PSU use different brand LM358 opamps on the same PCB? All about Bill Of Materials, SMD pick and place machines, suppliers and specifications. Links: Jellybean Opamps: https://www.youtube.com/watch?v=uq1DMWtjL2U NESS Factory tour: https://www.youtube.com/watch?v=bTij7Juj5qE http://www.artschip.com/pdf/LM358.pdf https://www.st.com/content/ccc/resource/technical/document/datasheet/61/46/87/01/98/ed/44/c5/CD00000464.pdf/files/CD00000464.pdf/jcr:content/translations/en.CD00000464.pdf Forum: https://www.eevblog.com/forum/blog/eevblog-1697-whats-up-with-different-brand-op-amps/ Podcast: Download