EEssential

 Product specifications (on the case):      Capacity: 12000mAh      Lifecycle: above 1000 times      Output: 12V      USB Port: 5V 2.1A/1A  ...

$4.79 (+shipping and tax for $7.23 total) Shenzhen Rongbo Jiachuang Technology Co, before the tariff was imposed on the Chinese goods. The d...

We try out MicroPython on STM32F429 Discovery kit.  We pull the MicroPython v1.25.0 source code from github.   First `make -C mpy-cross` to ...

 A foldable LED lamp that is powered by USB costs as little as $3-4.  The overall design seems relatively pleasing; the foldable and adjusta...

 Here we derive the source impedance of the Howland current pump.  The ideal current source impedance is infinity.  The Howland current pump...

 As an application example, the data sheet of a shunt voltage reference presents an 1mA precision current source as shown here,  Normally, t...

 The two types of flash memory devices, NAND and NOR, are familiar to people in tech.  Most people understand the difference between the two...