The below circuit diagram shows the complete hardware wiring setup of the Arduino-based Smart Walking Stick for the Blind ...

like with this ultrasonic flow meter, could be a big deal for DIY projects and the trades in general. The principle behind the sensor [ItMightBeWorse] is working on is nothing new. He discovered a ...

While it’s not radar, subbing in ultrasonic sensors is how [Dzl ... but it’s still pretty cool. To make the simple range sensor more radar-like, [Dzl] needed to narrow the beamwidth of ...