MIT chemists have devised a new way to wirelessly detect hazardous gases and environmental pollutants, using a simple sensor that can be read by a smartphone. With inexpensive sensors, the ...

LDRs or Light Dependent Resistors are very useful especially in light/dark sensor circuits. Normally the resistance of an LDR is very high, sometimes as high as 1000 000 ohms, but when they are ...

The simple clear glass sensor circuit can be used for experiment/hobby purposes. The concept is very simple and is based on a home-made sensor unit comprising one high efficiency ultra bright red LED ...

Although this circuit connects the DS18S20 1-Wire temperature sensor to a Cypress CY8C26443 PSoC microcontroller, designers can easily adapt it to connect other 1-Wire devices to any microprocessor.

It’s really hard to overstate how awesome ESP8266 development boards like the Wemos D1 Mini really are. For literally a couple of dollars you can get a decently powerful Wi-Fi enabled microco… ...

To help designers of such systems, this circuit accurately measures ambient light intensity over four decades of ... Simple Light Sensor Circuit Features High Dynamic Range. Dec. 13, 2009. ...