EEVblog

Hackable STM32 based ARM RF dev boards are literally falling from the sky! A teardown of two weather balloon Vaisala radiosondes, the RS41 and RS92. Repurposing tre RS41: http://www.om3bc.com/docs/rs41/rs41_en.html Github: https://github.com/bazjo Paper on capacitive humidity sensors: https://pdfs.semanticscholar.org/0728/24b548d91516d765c4b7facdceb350d61cdd.pdf

Dave’s Sony NEX VG30 camera, err, well, it broke… A quick partial teardown and fix. And a quick talk about the cameras Dave uses for the blog. Sony NX80 Sony A6300 Sony RX100 MKIV Forum HERE

Sagan assembles the RC2014 Mini retro Z80 computer kit running Microsft BASIC from 1978. But will it go to plan? Power up, testing and troubleshooting at 23:00 Forum: http://www.eevblog.com/forum/blog/eevblog-1205-rc2014-z80-computer-kit-build/ Sagan’s first time soldering: https://www.youtube.com/watch?v=EjpUYGRXzRQ

The new Samsung Galaxy Fold a folding OLED smartphone has failed spectacularly in the hands of early reviewers! What went wrong? Also, a rant about the pressures on reviewers from the manufacturers, Dave questions why Marques Brownlee won’t show his failure footage. 3M Flexible OLED testing presentationFlexible OLED 2011 article Forum HERE

Dave repairs a classic Tektronix 400MHz 2465B oscilloscope that’s been sitting on the mailbag shelf for years. Arguably the greatest analog oscilloscope ever made. BONUS magic smoke escape! Although it was repaired to a functional level, this is kinda Part 1, as not all functions were exercised and tested, and not all parts were refurbished. ...

The previous LCD repair didn’t last very long. Redux time. Installing a new 240×64 LCD module in the PM300 Power Analyser wasn’t exactly a walk in the park.

Surely the world’s only Nobel Laureate electronics hobbyist! Dr Barry Marshall, winner of the 2005 Nobel Prize for Medicine visits the EEVblog lab to sniff some vintage gear and discuss his Nobel prize winning discovery and treatment for stomach ulcers. Dr Marshall discovered that Helicobacter Pylori bacteria was responsible for stomach ulcers, and not stress! ...

Are you getting ripped off with Energizer and Duracell D cell NiMH rechargeable batteries? Why is a D cell NiMh the same capacity or lower than the smaller C or even AA cell? Teardown time! Forum HERE

Teardown Tuesday Dave’s Samson C01U USB Microphone got caught up in the flood, let’s take a look inside. Forum HERE

April 4th 2009 Dave started the EEVBlog Forum HERE

Experimenting with etching your own PCB’s by concentrating existing ferric chloride levels in tap water. How well does it work? Forum HERE

Designing your own custom heat sink is cheaper and easier than you might think. At look at why you might want to design your own heat sink, the costs, the advantages and disadvantages, design considerations for surface mount PCB’s, air convection, and mechanical DRC, and die-cast vs machining. SMD thermal design video: https://www.youtube.com/watch?v=2ygnAv6koSQ Forum HERE

Mrs EEVblog broke the headphone socket on Dave’s Sony TV. Soldering iron time.

Dave uncovered the first edition of Australian Electronics Monthly magazine from July 1985, by Roger Harrison, and featuring a classic David Tilbrook MOSFET amplifier design, vintage computer, vintage analog scopes and more. Forum HERE

More on the Gigatron 4 layer PCB for EMC compliance testing. Swapping the inner and outer plane layers, experimenting with KiCAD and investigating several issues with the tool. Talk on gerber generation, PCB checklists, PCB design for manufacture, PCB stackup, and uploading to JLCPCB for 4 layer manufacture. Forum HERE