In many underdeveloped and developing countries, the custom and laws of crossing the roads are not very strict, in which case an automated road crossing system is much needed. Besides, the amount of ...

Pyroelectric infrared sensors (PIR) are excellent devices to detect human/animal presence with a small form factor and rugged design, for cost-effective surveillance. They are widely used to trigger ...

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 document my learning in order to be able to inspire other people to make ...