In this video I'm building an Arduino Heart Rate Monitor that is housed in a toy handle in the style of the Star Trek Tricoder. The device uses the PulseSensor with an Arduino Pro Mini and an OLED ...

Light aircraft often use a heading indicator as a way to know where they’re going. Retired instrumentation engineer [Don Welch] recreated a heading indicator of his own, using cheap ...

There have been many questions about what direction Arduino would take after being bought by Qualcomm. Now it would seem that we’re getting a clearer picture. Perhaps unsurprisingly the ...

Thermally activated ion migration within two-dimensional van der Waals gate dielectrics modulates charge transport in a monolayer molybdenum disulfide semiconductor, revealing an ionic–electronic ...

Optical sensors are a broad class of device for detecting light intensity. This can be just a simple component for notifying when ambient light levels rise above or fall below a prescribed level, or a ...

Abstract: We developed slip-and-fall avoidance control for a monopod-hopping robot using a local slip sensor based on microelectromechanical systems (MEMS). The local slip sensor detects the ratio of ...

Abstract: This paper proposes a design of automatic following shopping cart. The shopping cart can not only automatically locate and follow customers in the supermarket shopping, but also has the ...