Posted on August 5th, 2015 1 comment
Posted on August 5th, 2015 No comments
Dave opens his mail. A potpourri of items this week.
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
Buzz Aldrin’s Mission To Mars
Old Hioki analog clamp meter teardown
Old analog VOM teardown
Citizen Pocket LCD TV
Texas Instruments SR-10 Electronic Slide Rule Teardown
JRC ADC chip datasheet
Old PSU teardown
Posted on August 1st, 2015 7 comments
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 term testing.
The setup consists of the BK Precision 8500 electronic load, the Keysight 34470A 7.5 digit meter, and the Rigol DP832 for testing.
Negative feedback T-Shirt
Energizer AAA battery datasheet
Duracell AAA battery datasheet
Posted on July 31st, 2015 1 comment
Part 3 of Dave & David2 assembling the Inventables X-Carve milling machine.
Bonus impromptu rant on the Batteriser for the first 30 minutes!
Posted on July 31st, 2015 2 comments
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