EEVblog

By David L. JonesTechnology Education

EEVblog episodes

December 12, 2025 EEVblog 1724 – BWD 603B MiniLab RETRO TEARDOWN
Teardown of the classic Australian Made BWD 603B Minilab that was saved from the UTS dumpster.
Schematic:
Forum: https://www.eevblog.com/forum/blog/eevblog-1724-bwd-603b-minilab-retro-teardown/
22 min
December 06, 2025 EEVblog 1723 – AlienTek DM40 Multimeter/Oscilloscope Review
Review of the AlienTek DM40 Multimeter/Oscilloscope
00:00 – Alientek DM40C Multimeter and Oscilloscope
02:12 – Unboxing
03:51 – What’s with the rotating tilting bail?
06:15 – Power on
08:53 – The Trend Chart is really nice
10:19 – Online/Offline mode, what IS this?
11:58 – Banana jacks please
12:07 – Megaohms interference issue
13:20 – Autoranging speed & Continuity & Diode
14:08 – No AutoHold
14:31 – Isolated inputs?
14:58 – Calibration checks
16:52 – Capacitance interference?
18:37 – Relative mode
19:10 – Colour LCD inside and outside
20:04 – Temp is a bit off
20:15 – No internal recording
20:53 – Reading memory
22:02 – Oscilloscope functionality
26:28 – Function Generator
28:46 – FFT
29:09 – Bluetooth functionality
31:33 – Three Finger Screen Shot
32:31 – It’s got magnets!
32:51 – Teardown
37:56 – Analog front end
38:46 – Power consumption measurement
39:03 – PCB inspection talking head
45:08 – Conclusion
Forum: https://www.eevblog.com/forum/blog/eevblog-1723-alientek-dm40-multimeteroscilloscope-review/
49 min
November 25, 2025 EEVblog 1722 – Manufacturing Hardware War STORY
Re-telling of a manufacturing hardware war story talk I gave at a recent hardware meetup in Sydney.
https://luma.com/Sydney-hardware-meetup?k=c
How a simple manufacturing change cost a company millions of dollars.
00:00 – Sydney Hardware Meetup
01:16 – Seismic Oil Survey Exploration: How to find oil
03:29 – Seismic survey vessels are HUGE!
04:25 – Solid Towed Array Streamers
05:56 – On the back deck of the ships
06:33 – Leading edge low noise 24bit ADC’s
07:23 – Hydrophone module construction
09:33 – The actual war story – Continuous Improvement…
14:12 – It CAN’T be that, it’s impossible…
16:58 – Field repair wasn’t easy…
Forum: https://www.eevblog.com/forum/blog/eevblog-1722-manufacturing-hardware-war-story/
21 min
November 22, 2025 EEVblog 1721 – RIP Arduino (New T&C Deep Dive)
Qualcomm have bought out Arduino, and several weeks later have altered the Terms & Conditions. Dave does a deep dive of the changes.
https://www.arduino.cc/en/terms-conditions/
https://web.archive.org/web/20250912221625/https://www.arduino.cc/en/terms-conditions/
00:00 – Qualcomm have acquired Arduino. I’ve got a bad feeling about this…
01:02 – How much did they pay for Arduino?
02:54 – They have changed the Terms And Conditions
03:54 – Arbitration Disputes
04:21 – Kids? Bugger off!
05:11 – Are they now restricting reverse engineering?
06:35 – Irrevocable! Give us everything, forever.
07:08 – Revocable! We can take away your stuff.
08:26 – No competition for you!
09:46 – Patents
10:25 – Export & Trade Compliance. No selling to naughty people.
11:10 – For Personal Use Only
11:36 – Changes to the Changes. We can shut it all down.
12:24 – We can suspend your account
12:49 – Arbitration blah blah
13:31 – LibreDuino
Forum: https://www.eevblog.com/forum/blog/eevblog-1721-rip-arduino-(new-tc-deep-dive)/
15 min
November 14, 2025 EEVblog 1720 – Mailbag: USSR Bonanza + Logic Training + $69 Logic Analyzer
More mailbag!
00:00 – Biggest mailbag load EVER. Too much random vintage USSR stuff to list…
26:24 – Logicgat Digital Logic training board.
https://logicgat.es/
31:22 – SLogic16U3 $69 USB3 800MHz Logic Analyser
https://wiki.sipeed.com/hardware/en/logic_analyzer/slogic16u3/Introduction.html
Forum: https://www.eevblog.com/forum/blog/eevblog-1720-mailbag-ussr-bonanza-logic-training-$69-logic-analyzer/
45 min
November 14, 2025 EEVblog 1719 – 75kWh Home Storage Battery Expansion
Expanding the AERL home storage battery from 25kWh to 75kWh!
Also replacing the 5kW Deye hybrid inverter with an 8kW Solis hybrid inverter.
And installing a changeover switch to power most of the house from the Backup port in the new inverter.
https://www.aerl.com.au/products/life2-battery
https://www.thomsonenergy.com.au/
Solis s6-eh1p8k-l-plus-au
https://www.solisinverters.au/uploads/files/202506/Solis_Manual_S6-EH1P(3-8)K-L-PLUS_AU_V1,1(20250530).pdf
Forum: https://www.eevblog.com/forum/blog/eevblog-1719-75kwh-home-storage-battery-expansion/
00:00 – 75kW Battery Expansion
05:11 – The new AERL 10 way outdoor battery cabinets
07:28 – New Solis 8kW Hybrid Inverter
08:27 – 70sqmm DC battery cable
09:22 – New Changeover switch + New 10sqmm cable run
10:19 – The old 25kWh rack
11:03 – New grid side energy meter
12:03 – Wire strippers or Pliers?
14:10 – Can you get an entire system for free?
14:45 – 70sqmm wire crimping
15:36 – Dave’s spidey sense kicks in
16:09 – Trick of the Trade: Bending PVC piping
17:00 – Always trust Dave’s spidey sense
17:17 – Nighttime install!
22:02 – RJ45 termination in the dark
23:18 – First test, something seems wrong…
26:17 – Nest morning troubleshooting
28:52 – It’s always the current clamp
31:19 – Switchboard upgrade with Changeover switch
33:32- Stress testing the Solis backup port
36 min
November 14, 2025 EEVblog 1718 – Cheap 1GHz Oscilloscopes are Useless? ($5 DIY 1GHz Resistive Probe)
What use is a 1GHz oscilloscope if it doesn’t have a high frequency active probe interface? Well, there are several options including a cheap $5 DIY resistive probe.
Practical demonstration of active FET probing vs Passive Probing vs DIY Resistive probing.
A lot of material extracted from videos 1367 and 1368
Forum: https://www.eevblog.com/forum/blog/eevblog-1718-is-a-cheap-1ghz-oscilloscope-useless-($5-diy-1ghz-resistive-prob/
00:00 – What use is a cheap 1GHz oscilloscope if it doesn’t have an active probe interface?
02:30 – Capacitive reactance and tip capacitance
03:55 – High bandwidth passive probes
04:59 – Active FET probes to the rescue, right?
07:54 – DIY $5 1GHz Resistive probe
09:02 – DIY resistive probe explained
13:33 – Active FET probe example: Poor Grounding vs Good Grounding
19:02 – $5 DIY Resistive probe vs $3k Active FET probe
19:48 – What’s going on here? The downside of resistive probes.
21:10 – Resistive probes are more tolerant of grounding
25:08 – Conclusion
27 min
November 03, 2025 EEVblog 1717 – Rigol’s INSANE New $999 350MHz Oscilloscope: TEARDOWN
Rigol have released the new MHO900 series mixed signal oscilloscope. For $999 entry level MHO934 you get 4CH 350MHz 12 bit at 4Gs/s, this is insane!
Teardown of the special edition 1GHz MHO98 (still only $1399!)
https://www.rigol.com/intl/products/oscilloscope/MHO900.html
https://www.rigolna.com/products/digital-oscilloscopes/mho900/
In Australia: https://emona.com.au/quick-links/rigol/
00:00 – Special Limited Edition MHO98
01:07 – DHO900 vs MHO900
03:06 – Is there another 350MHz scope for $999?
04:48 – Teardown
07:15 – Dual 100MHz AWG PCB
08:23 – 1GHz front end
09:44 – Custom ASIC ADC
13:02 – Impressive assembly minimisation
14:07 – Back the main PCB
16:35 – Why the front end shields are not soldered is kinda smart
17:50 – What has Dave screwed up?
19:57 – Dumb arse Dave does it again
20:42 – Bootup
22:21 – Power consumption measurement
22:39 – Front end PCB analysis
26:04 – The acquisition ASIC is not what it seems…
27:31 – Can anyone else touch this price touch? Analysis of other brands.
33:28 – Web interface and basic bandwidth checks
37:17 – Trigger jitter issue with multiple channels?
39:42 – Conclusion
Forum: https://www.eevblog.com/forum/testgear/rigol-mho98-and-mho900-oscilloscope-series/
41 min
October 25, 2025 EEVblog 1716 – University Dumpster Diving – Kikusui Oscilloscope
A viewer went dumpster diving at the University of Technology and found some classics.
Teardown and playing with a Kikusui DSS5040 Analog/Digital Storage scope.
Plus a classic Australian BWD 603B Mini-Lab
Manual: https://www.eevblog.com/files/Kikusui_DSS5040_E.pdf
00:00 – University Dumpster diving time!
02:46 – Kikusui DSS5040 Analog/Digital storage oscilloscope
07:12 – Teardown
10:51 – Power On
17:14 – Digital Storage Mode
21:24 – Conclusion
Forum: https://www.eevblog.com/forum/blog/eevblog-1716-university-dumpster-diving-kikusui-oscilloscope/
23 min
October 23, 2025 EEVblog 1715 – Euler Precision eSAP-30 3GHz Active Probe REVIEW
Swiss company Euler Precision have a new 3GHz active probe on Crowd Supply, let’s take a look.
https://www.crowdsupply.com/euler-precision/esap-30
00:00 – The Euler Precision eSAP-30 Active Probe
01:26 – The problem with passive probes, Capacitance Reactance
03:31 – Unboxing
05:55 – Open Source?
06:46 – It’s all about the probe accessories
08:08 – Measurement report
10:02 – Real world measurement using Keysight reference probe
11:57 – Testing the Euler probe with a flat flex probe interface
13:13 – Let’s probe it even better…
15:55 – Noise comparison test
16:09 – Teardown
19:26 – 700MHz passive probe comparison
20:48 – Conclusion
Forum: https://www.eevblog.com/forum/blog/eevblog-1715-euler-precision-esap-30-3ghz-active-probe-review/
22 min