If you love tinkering, ESPHome is a fantastic way to build custom smart home devices. This open-source firmware framework ...

In Montreal, bus and subway riders who use the transit system’s OPUS smart fare card and have a smartphone, can receive personalized coupons from stores and entertainment venues that are located along ...

Sometimes we need a non-contact liquid level sensor. There are several ways to build that, but the easiest is to try an optical liquid level sensor. You may already have an idea in mind since you are ...