How is a double sided plated through hole solder masked and silk screened component olverlay PCB manufactured?
Take a step-by-step tour of a PCB manufactuing plant.
Hard electroplated gold card edge connectors VIDEO
Solar Freakin’ Roofs!
How viable is Tesla’s Solar Roof concept?
What did Elon Musk not mention at the product launch?
UPDATE: Yes, the press kit mentions they all have identical looking solar and non-solar tiles to chose from for shaded/[...]
How did you take “digital” photos in the 1980’s and early 90’s?
With an analog still video camera that stored images on a PAL format 2″ video floppy disks, that’s how!
Enter an age before SD cards, flash memory, J[...]
Old component bonanza Mailbag!
TI-74 BASIC pocket computer teardown from 1985
OpenMYR WiFi Motor Kickstarter
Several 4-banger calculators
GEZE automatic roller door controller teardown
E-Book reader teardown and PCB bypassing t[...]
It’s finally here! The first Solar Roadways installation happened in Sandpoint Idaho after $3.9M in funding and 6.5 years of development. Does it work? Is it practical?
Once again, Dave runs the numbers…
A viewer found an EMC issue with the Keysight U1272A multimeter
Dave confirms both conducted and coupled issues and finds some spooky action at a distance!
Comparisons with other meters confirm they don’t have the same issue.
Fluke 87 GSM Prob[...]
How does a high voltage differential probe work? How is it safe? Is it isolated? A teardown and some reverse engineering of the Lecroy AP031 25MHz HV Differential probe. a.k.a Sapphire Instruments SI-9001 Forum HERE
Dave takes a look at how to optimise the low burden voltage multimeter design from PART 2 to eliminate some parts.
And explains the µCurrent shunt circuit design and how that applies to this new optimised design.
It’s basically a practical tu[...]
Mailbag time again.
Dave’s first multimeter hack!
Sinclair PDM35 Multimeter
Russian analog multimeter
Canyse 801 data logger
Kickstarter Masso CNC Controller
Lumintop Prince 1000 lumens flashlight torch
Lumintop micro USB[...]