The solar installers screwed up the job a THIRD time! AND they tried to cover it up, literally! This time it’s my Deye inverter when they came back to fix the 2nd problem as shown in this video: https://www.youtube.com/watch?v=mztgHWnDkHo
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Why do companies still sell 2CH oscilloscopes? Plus a massive tangent into test and production engineering showing one of my old test engineering projects. LCR meter and Transmission Line Tester design: https://www.youtube.com/watch?v=fs2MfTW4o_Q Relay Matrix IR Measurement: https://www.youtube.com/watch?v=-mavHYV-H6o PC104 Embedded DOS PC: https://www.youtube.com/watch?v=6ad0KP5EvpU Linus Tech Tips Test Rack: https://www.youtube.com/watch?v=b3x28s61q3c Test rack …
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$230 Micsig MDP700 High Voltage Differential probe review and comparison with the older DP10007 and the EEVblog HVP70 probe. Have Micsig fixed the CMRR issue that plauged the DP10007 design? https://s.click.aliexpress.com/e/_DnNvolN CMRR measured and explained: https://www.youtube.com/watch?v=vDe_BHvRpks GaN MOSFET Experiemnts with fibre optic high voltage probe: https://www.youtube.com/watch?v=qgZgSDqmVMg Reverse engineering the DP10007: …
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Is it worthwhile to run water through your rooftop solar panels to cool them down while pre-heating your hot water? Or maybe heating your pool? Also solar air and water heaters. As always, YMMV, but this is why I didn’t do it. Answering a Twitter question: https://x.com/axion2003/status/1812740667367460971 Heat Pump Hot …
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A Konika Minolta bizhub C284e A3 colour photocopier found in the dumpster. Enjoy Dave’s embarrassment at the redundant teardown. Ebay listing for original modern art print: https://www.ebay.com.au/itm/226241082176 Forum: https://www.eevblog.com/forum/blog/eevblog-1629-dumpster-find-a3-colour-photocopier/ Podcast: Download
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Reinstallation of the 5kW Enphase microinverter home solar power system, and installation of a new 5kW Deye Hybrid inverter string system did not go well… Forum: https://www.eevblog.com/forum/blog/eevblog-1628-home-solar-re-install-upgrade-fail/ Deye user manual: https://www.sunovagroup.com.au/wp-content/uploads/2023/12/SUN-3-6K-SG04LP1-AU-1.pdf 00:00 – New Trina, old LG, and even older LG panels 03:44 – Salute the old Sunnyboy 3kW string …
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A talk with Scott Williams from Xentronics at the Electronex show about freelancing and running an electronics design consultancy business. https://xentronics.com.au/ The Amp Hour Talk 1: https://theamphour.com/624-design-manufacturing-consulting-with-scott-williams-from-xentronics/ Talk 2: https://theamphour.com/645-moving-down-the-stack-with-scott-williams/ Forum: https://www.eevblog.com/forum/blog/eevblog-1627-electronex-engineering-consultancy-with-xentronics/
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My solar power installer HAD ONE JOB but FAILED. A short story. LOL along as they attempt to reinstall and commision my Enphase microinverter solar power system. Aircon Install FAIL video: https://www.youtube.com/watch?v=XD5Emhqd5Ks Forum: https://www.eevblog.com/forum/blog/eevblog-1626-you-had-one-job!-(solar-power-install-fail)/ Podcast: Download
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Uni-T are making a surprising move into the mid end instrument market with some custom ASIC based oscilloscopes, spectrum analysers, signal generators and a bunch of other instruments. A talk with Mark Isherwood from Rapid-Tech, the Australian dealer for Uni-T. https://rapid-tech.com.au/uni-t-instruments/ Forum: https://www.eevblog.com/forum/blog/eevblog-1625-electronex-scope-wars-the-rise-of-uni-t/ Podcast: Download
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An interview at the Liquid Instruments stand at Electronex 2024 about the Moku range of multi-function mixed signal oscilloscope, designed and built in Australia! Thanks to Ben Price for answering the questions even though he’s the mechnical engineer! https://www.liquidinstruments.com/ Forum: https://www.eevblog.com/forum/blog/eevblog-1624-electronex-liquid-instruments-moku-oscilloscope/ Podcast: Download
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Walkthrough of the 2024 Electronex trade show in Sydney. Forum: https://www.eevblog.com/forum/blog/eevblog-1623-electronex-2024-walkthrough/ Podcast: Download
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This is the biggest mistake beginners often make when using a multimeter ohms function. A customer returned an EEVblog BM235 multimeter because it was “Faulty” Was it? Let’s find out what happens when you try and measuse a CAN bus with a multimeter. Forum: https://www.eevblog.com/forum/blog/eevblog-1622-dont-make-this-multimeter-mistake/ 00:00 – Don’t measure a …
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More mailbag! A look at the RadiaCode Radiation Monitor, and the LattePanda Mu Intel N100 Compute Module. https://www.radiacode.com/ https://amzn.to/3yV5Gp4 https://www.lattepanda.com/lattepanda-mu https://www.dfrobot.com/kit-004.html Github: https://github.com/LattePandaTeam/LattePanda-Mu/tree/main/Electricals/Examples/%5BDFR1141%5DFull%20EVA%20Carrier%20for%20LattePanda%20Mu Part 2: https://www.youtube.com/watch?v=UE_srZZdPjM 00:00 – Mailbag 00:30 – Radiacode 103 Radiation Detector & Spectrometer 07:48 – Teardown 14:09 – LattePanda Mu Intel N100 Compute Module 25:22 – …
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Extreme teardown of the Deye SUN-5K-SG04LP1 5kW hybrid solar inverter. Will it contain the quality components claimed? Also a topology reverse engineering of all the stages. Hi-Res photos: 00:00 – A generous and coincidental donation from a viewer 00:37 – We have the brochure, let’s check the claims! 02:44 – …
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More Mailbag! 00:00 – THE Don McKenzie! and a bonanza of embedded history https://www.dontronics.com/jump-list.html https://www.dontronics.com/First-pc.html 08:44- PBUFF prototype 18:38 – Photon, the world’s longest battery life camera (Open Source) https://toaster.llc/photon/index.html 29:19 – Sanyo ICC-811 Mini Calculator from 1972 37:33 – Japanese Gadgets: USB to Bluetooth converter + USB Cable Tester …
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