Lost spacecraft: SpaceX said Thursday that its Starship spacecraft — which was meant to lap Earth and splash down in the Indian Ocean — exploded not long after its 7th test flight took off ...

So simple. And as he demonstrates in the video below, it does double-duty as a diode tester. This is a great beginner’s project, and it introduces a bunch of fundamental ideas: reading the ADC ...

Department of Materials Science and Engineering and Centre for Functional Photonics (CFP), City University of Hong Kong, 83 Tat Chee Avenue, Hong Kong S.A.R. 999077, People’s Republic of China ...

This is also the On/Off button. Below the Test button is a black pushbutton with Zener printed on it in dark grey. When you press it, it lights up red and the display shows “Voltage Regulation Diode.” ...