Have you ever wondered how speed guns measure the speed of moving vehicles or how an athlete's sprint speed is recorded? Normally these speed sensors work with radar or laser technology to bounce back ...

Melissa Quinn is a politics reporter for CBSNews.com. She has written for outlets including the Washington Examiner, Daily Signal and Alexandria Times. Melissa covers U.S. politics, with a focus on ...

USB PD/PPS direct battery charge controller script for the YK-Lab Shizuku USB tester (a.k.a. YK-Lab YK001, AVHzY CT-3, Power-Z KT002, ATORCH UT18).