EEVblog No Script, No Fear, All Opinion

Dave shows how to do discharge testing on AAA and AA alkaline batteries, for the specific purpose of investigating how much energy is left under the industry standard 0.8V cutout voltage. This is an explanation of the test setup, verification, and a sample plot of some data before the long …

Part 3 of Dave & David2 assembling the Inventables X-Carve milling machine. Bonus impromptu rant on the Batteriser for the first 30 minutes!

Time lapse footage of Dave & David 2 assembled the Inventables X-Carve cutting/milling machine. 6.5 hours of build footage in 2 1/2 minutes

Teardown of the new INDUAL 80W industrial LED high bay ceiling light from Lightinstar In particular a close-up look at the 150W 12×12 Chip-On-Board COB LED module from HongliTronic Datasheet UPDATE: Yes, they say they have fixed the issues of mounting and earthing. Forum HERE Podcast: Download

In this tutorial Dave explains how to precisely measure and calculate the remaining (or wasted) energy capacity in a battery using the graphical analysis technique using a spreadsheet. The differences between constant power and constant current loads and when to use them is discussed. Also, the importance of ESR and …

Dave does some more quick basic testing of the La Gard Basic digital safe lock, for any obvious power line exploits. Part 1 is HERE Forum HERE Podcast: Download

We are LIVE right now on youtube building the Inventables X-Carve

Dave tears down the Rockband 3 Stratocaster Mustang wireless guitar controller from the Guitar Hero Xbox game manufactured my Madcatz Forum HERE Podcast: Download

More mailbag, from a few countries we haven’t had before! Flux Capacitor T-Shirt Forum HERE SPOILERS: Isolated Current Measurement Interface from PM Test Equipment PAL TV Pattern & RF Generator Teardown LED Panel meter teardown. Mail from Antarctica! Sandmarc GoPro Selfie Stick & Pole Sandmarc Armour GoPro bag Rockband 3 …

Dave debunks cordless anti-static wristbands you can buy on ebay for $1. Do they do anything at all? Controlled quantitative static voltage measurements with a surface DC voltmeter are done to prove they are 100% bullshit! And a direct comparison with a proper anti-static wrist strap and bonding point is …

Many have asked about my Flux Capaci… *cough* Fluxgate Condenser T-Shirt It’s available again for sale on Teespring HERE for the next 10 days. Only 15 bucks! Never be late for your next design review meeting with Dave’s hand drawn fluxgate condenser t-shirt, complete with the missing equations. Uber nerd street …

Dave shows a potential problem with Super Regenerative Receiver circuits, and looks at the issue of interference with his LED light remote control mains switches. Some fun with two spectrum analysers, a scope, a H-Field probe, and yes, of course a teardown. The Tekbox EMC near field probes Forum HERE …

Dave visits the 2015 Vivid light festival in Sydney The guys from Robotic Systems talk about the technical details of their custom Game Of Drones LIDAR based quadcopter drone system they developed for Intel for the Vivid festival. Also, a look at the Intel Edison powered body sensing suit. Forum …

A follow-up to the previous video checking if there are any noise issues with the new lab LED panel lights. And a noise comparison with the old LED lights. LED Lighting Install Video Common Mode Noise Video Forum HERE Podcast: Download

Dave installs a new LED lighting system in the EEVblog lab, with 9 x 60W 600mm 5000k ceiling LED panels. A look at hermaphroditic connectors. What kind of lux improvement is there on the bench? Has the colour rendering index (CRI) changed things? They cost how much? A look at …