EEssential

I wrote about some LED flashlight that I built  or purchased many years ago.   Recently the incandescent bulb on my Garrity flashlight burn...

 Antonki Thermometer/Hygrometer is sold at $8 for two.  It claims a temperature range of -50 to 70°C (-58 to 158°F) with accuracy +/-1°C and...

 A very simple toaster oven costs about $20.  While the most consumer electrical appliances have microcontrollers inside and some are intern...

 The once ubiquitous fluorescent light tubes are gradually being replaced by the LED light.  The once popular compact fluorescent bulbs are ...

 The computer peripheral bus is eventually settled on PCIe and one small form factor expansion card is M.2 which provides up to 4 PCI expres...

 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...