Hi, I'm Bill. I'm a software developer with a passion for making and electronics. I do a lot of things and here is where I ...
Just about every “getting started with microcontrollers” kit, Arduino or otherwise, includes an ultrasonic distance sensor ...
A consumer scans an Alipay QR code to pay for the order at a self-service restaurant in Hangzhou, Zhejiang province. [Photo/Xinhua] The first China-led international standard for QR codes was ...