Renesas Electronics Corporation, a supplier of advanced semiconductor solutions, is changing the way designers build sensor-connected IoT applications with a range of new solutions targeted at faster design cycles, improved accuracy, and reduced system cost. In addition to the new HS4XXX family of relative humidity and temperature sensors, Renesas is introducing the ZSSC3281 sensor signal conditioning (SSC) IC for…

In Part I and Part II of this series, we learned how to use an analog sensor — including a potentiometer (POT), a light-dependent resistor (LDR), and a soil-moisture sensor — to present values on an organic light-emitting diode (OLED) display.  In Part III, we’ll also present data on an OLED display, but this time…

Texas Instruments (TI) has introduced the first devices in a new family of humidity sensors that provide the industry’s highest reliability and accuracy and the lowest power consumption – along with built-in protection of sensing elements. The HDC3020 and HDC3020-Q1 will allow engineers to create more reliable industrial and automotive systems that withstand potential damage…

Humidity detector detects the presence of moisture in our hands, and gives you indicator with the help glowing LED’s. This circuit can be used to test the stress, emotion or can be used as lie detector. As emotion and stress is not reflected by heartbeat, blood pressure and body temperature but in that case skin moisture also increases. And when skin become moist its resistance decreases. When a person speak lie its body resistance decreases. Therefore skin resistance is a good indicator for measuring stress level. When a person speaks lie physiology changes occur because of that body resistance decreases and now you can compare it with the result for normal question. This circuit is based on two IC namely CA3130 and LM3914 and LED’s to show you the stress meter with few more components. IC CA3130 is operational amplifier which combines the advantage of both CMOS and bipolar transistor on a single chip.