EEssential
The essence of electrical engineering.
Tuesday, December 17, 2019
AN8008 Current Measurement Error
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The most annoying problem with ANENG AN8008 multimeter is the poor accuracy of high current measurements. Significant error is seen for th...
Wednesday, December 11, 2019
$20 Multimeter (ANENG AN8008)
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I wrote about $4 multimeter (also see here ), which is fine for crude measurements. For $20, we can have a meter with the following enha...
Saturday, November 16, 2019
TS100 mini soldering iron
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The TS100 soldering iron is an open source hardware by Miniware, which releases the schematics and software. It has a decent construction; ...
Monday, October 14, 2019
Habor Freight $4 Multimeter
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I was generally pleased with Cen Tech multimeter from Habor Freight. Similar looking multimeters (Item 63604) sold at Habor Freight now d...
Monday, August 12, 2019
Performance Comparison of a few Computer Systems
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Small computer modules like the Tinker Board now easily outperform old laptops while the cost ratio is 1:20. Why is that Tinker Board runs...
Friday, August 9, 2019
Product Failure II
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Continued from product failure . Power Adapter 5V 2.5A AC power adapter failed. It was still able to provide about 0.5A, but large...
ATOTO A6 Pro
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As I add to my old car more electronics, GPS, backup camera, dash cam, Bluetooth, etc, I figure all that can be handled by the Android auto ...
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