Posted on July 29th, 2014 4 comments
Dave looks inside the most popular microcomputer of the 1970′s, the Radio Shack / Tandy TRS-80 Model I
And also a look at the TRS-80 Model 102.
Bonus EMI testing for fun.
Bonus rant on how slow the Tektronix MDO3000 is in RF mode.
Hi-Res Teardown Photos:
Posted on July 24th, 2014 8 comments
Dave shows some techniques on how to build and mount usable PCB based front panels user interfaces with LCD displays and push buttons and capacitive touch buttons onto small cheap extruded aluminium enclosures.
In particular for the µSupply project. This is Part 14 of that series.
The uCalc project gets another look in, and does the Sharp Memory dot matrix LCD.
Posted on July 22nd, 2014 7 comments
Dual voltage source selection circuit
Casio FX-7000G the world’s first graphing scientific calculator, circa 1985.
A 1989 vintage analog ohmeter.
Teardown of a 450W electronic dimming module.
Posted on July 19th, 2014 11 comments
Dave checks out the $20 TI EK-TM4C1294XL Tiva C Series TM4C1294 Connected Launchpad Internet of Things.
ARM Cortex M4 processor with Ethernet and IoT demo application.
How useful is it out of the box?
Posted on July 15th, 2014 15 comments
Dave tears down a cash register found in the dumpster.
Does it have any useful parts to salvage?
German brand Quorion QMP 3282