Posted on May 27th, 2015 3 comments
A reddit user asks what is the point in learning basic electronics these days when you can do everything with off the shelf modules and boards like Arduinos and the like.
They make it super easy to build stuff, so why does anyone need any knowledge of basic electronics any more?
Posted on May 25th, 2015 4 comments
Dave goes back 20 years and find an old PC Based Logic Analyser project of his that was published in Electronics Australia magazine back in 1996. He uncovers the original timing diagrams, schematics, and prototype. And tries to resurrect the old Borland Pascal 7 source code and Lattice ispLSI PLD chip code.
And the old Protel Autotrax for DOS PCB and schematic files.
Will it all work 20 years later?
A bonus side detour into the venerable Tektronix TDS210/220 oscilloscope.
Posted on May 20th, 2015 5 comments
What’s inside the a 1987 vintage Sharp X68000 personal computer / gaming system from Japan?
Sold exclusively in Japan from 1987 to 1993 this 10MHz 68000 based boasted graphics capability superior to the Amiga and Atari ST. The powerful graphics enabled pixel-perfect ports of clasic games arcade games, and the machine was highly sought after by gamers. Running a custom operating system called Human68K, it even had 3D goggle support.
Hires teardown photos:
Posted on May 19th, 2015 13 comments
The EEVblog Lab had a HD Dropcam so that people could watch what was happening live in the lab. It worked well enough, but then Dropcam changed their terms and conditions and wanted to merge with Nest (who bought them). This was bothering Dave so the search for an alternative began.
Surprising, there are very few options on the market that:
a) Allow low frame rates in order to reduce upload bandwidth (The lab ISP has a monthly bandwidth cap)
b) Are low enough power and work completely autonomously
c) Don’t cost an arm and a leg
d) Provide the ability to embed the stream into a public website so people could watch without having to go another site.
We had spare Logitech webcams (UVC ones should work fine, H264) which were that would provide good image performance, so it was simply a matter of finding a hardware and software solution to match. A Logitech C905 was used in the final solution even though we had better C920’s, they will be saved for use as the live show cameras.
Posted on May 19th, 2015 4 comments
Mailbag time again. Dave opens his mail. What random stuff awaits?
Marble Run video below
A vintage Japanese Sharp X68000 video game home computer from the 1980’s
Teardowns of an industrial controller, a LED light controller, ABB industrial switchmode power supply, Casio FX-3800P programmable calculator, old Gossen digital multimeter and a German analog meter.
Surprise visit by Sagan
Two Kickstarter Projects:
Bluetooth Audio Link (BAL)
A solar powered propeller hat and electronics business card http://shop.asmyldof.com/
ICL7136 Multimeter chipset