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How to hack a calculator into a test system event counter. Previous video on contact debouncing and using a universal counter HERE Forum HERE Podcast: Download

How do you debounce a clapping monkey? Probes The Monkey makes his return. All about contact debouncing, setting up a universal counter as an event counter, and other issues that can arise on a seemingly simple test setup. Forum HERE Podcast: Download

A mystery Mailbag teardown item! Forum HERE Podcast: Download

XMAS Mailbag T-Shirts HERE Forum HERE SPOILERS: Tritium powered nuclear battery from NurdRage Blackberry Playbook Tablet Teardown Sony Video & Audio Editing System 1990’s style www.youtube.com/user/lexonacid TinyLabs 125KHz RFID keyfob cloning device from TinyLabs 0603 Resistor Kit TinyGrill Telematics Gateway (Dodge Charger 2011) Teardown Cicso GLC-SX-MM Multi-Mode fibre optic module …

Dave shows you how to setup, measure and generate an Efficiency vs Load Current characteristic curve for a DC-DC converter, just like you see in the datasheets. Several traps for young players are discussed, along with plotting Logarithmic axis charts in a spreadsheet. Electronic Load Kit BM235 Multimeter: http://amzn.to/2hJp78T Rigol …

How does a Countersurveillance Monitor (a.k.a Bug Detector) works to sweep a room for bugs? Teardown of the Research Electronics CPM-700 Also a look at the NSA “LoudAuto” radar retro-reflector spy bug, and some cold war ear Soviet embassy espionage. NSA Spy Devices Brochure Talking Electronics FM Bugs Forum HERE …

What’s inside the world’s first portable microcomputer? The Osborne 1 from Osborne Computer Corporation torn down. An Adam Osborne and Lee Felsenstein design. ROM Dumps HERE and HERE Field Service Manual Technical Manual Forum HERE Podcast: Download

Dave shows you how you can set up an electronics lab for only a few hundred bucks. Multimeter, oscilloscope, power supply, function generator, soldering station, solder, wire, tools, microscope and magnifier, and components. The previous video HERE Forum HERE Links: UT136B Multimeter OWON VDS1022I USB Oscilloscope YiHUA 936 Soldering Station …

More on the nixe tube driver chip, testing for bias glow and clamp voltages. Schematic design in Altium Designer. Selection of the Wifi ESP8266 module Traps in 3.3V / 5V logic level translation. Design tip for neat schematics. Forum HERE Podcast: Download

Mailbag overload! Forum HERE SPOILERS: A watch made from a old IBM Microdrive Hard Drive Drive! Tearing down and debunking a Hyper Voltage Stabiliser car energy smoothing bullshit device. Panduino Uno compatible Arduino Dell Server destroyed by super Neodymium magnet! Brainiac75 Youtube My Playhouse Youtube Hardware Hacker book by Bunnie …

Some more info and experiments on driving Nixie tubes. Open circuit cathode voltage, open collector vs totem pole / push-pull drivers, NIxie voltage drop and pre-biasing, and using the ULN2003 with zener clamping. Forum HERE Podcast: Download

The Dulmont Magnum “Kookaburra” from 1983 is the only laptop to have even been designed and made in Australia, as well as being the world’s first “clamshell” laptop design. Dave tears down this obscure retro classic based on the equally rare 80186. Download ROM images HERE Forum HERE Hires photos: …

Part 1 of an internet connected Nixie tube counter/clock display project. What are Nixie Tubes? How do they work? How do you drive them? Selecting a suitable driving solution and parametric searching. Forum HERE Podcast: Download

Dave takes a look at the 21,000fps Chonos Kickstarter high speed digital camera prototype. Tesla500 Youtube Channel World’s most powerful LED light – 5kW VIDEO Forum HERE Podcast: Download

Part 2 of building the Raspberry Pi computer cluster. Dave strips down an old Apple G5 PowerMac to use as the enclosure. Forum HERE Podcast: Download