EEVblog No Script, No Fear, All Opinion

Another in a series of battery tutorials, Dave explains how to correctly measure the battery cutout voltage of a product. And how to take internal resistance of a battery into account. And also a detailed response to a video from Batteriser claiming Dave is wrong in using a PSU to …

Dave answers a beginner forum question on why the Rigol DS1054Z oscilloscope does not show the intended vertical Volts/Div setting he expects. A trap for young and old players alike. 1X and 10X probes, and auto probe interfaces. The forum question is HERE Other related videos: EEVblog #601 – Why …

Come on a ride as Dave repairs an intermittent Keithley 177 Microvolt DMM, garden paths and all. Service manual & Schematic ADC Datasheet 555 Timer T-Shirt HERE Negative Feedback T-Shirt in the EU through Fabrily Forum HERE Podcast: Download

As the titles says, Negative Feedback T-Shirts are now available in the EU through Fabrily. This should work out cheaper for postage than ordering through Teespring in the US. CLICK HERE to get one.

A look at the Ultra Micron, the world’s smallest digital ionising radiation dosimeter, and it’s Open Source Hardware. Github page is HERE SBM-10 Russian Geiger-Muller Tube DATASHEET Forum HERE Podcast: Download

Dave opens his mail. A potpourri of items this week. Forum: http://www.eevblog.com/forum/blog/eevblog-775-mailbag/ SPOILERS: The Ultra Micron world’s smallest digital dosimeter / Geiger counter, and it’s open source! Full teardown video HERE The Stick-Vise PCB Holder Russian nixie tube display The 1962 Ferrari 250 GTO Telsa merch Buzz Aldrin’s Mission To …

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 …