Some 1.5 v LED flasher circuits are available on the internet and we like to present you four of them. The flasher circuits below operate on a single 1.5 volt battery. The circuit on the upper uses ...

Layman’s RGB LED module is an ultra-simple project realized without any microcontrollers. An RGB LED can be driven with a cmos presettable up/down counter. This is accomplished by connecting the three ...

This pulse oximeter is so simple and cheap to build it’s almost criminal. The most obvious way to monitor the output of the sensor is to use an oscilloscope. The poor-man’s stand-in for that is a ...

The Masimo MX-5 circuit board enables full functionality of Masimo rainbow(R) Pulse CO-Oximetry(TM) measurements at a fraction of the power consumption of prior rainbow(R) boards. Click here for ...

Could a single memristor replace both the driving transistor and storage capacitor in micro-LEDs? Prof. Tae-Geun Kim and team ...

Smartphone-controlled LED lights with integrated speakers are nothing new, but they've always had some shortcomings. For one thing, there was always the speakers, which seemed to be an added ...