A brief overview of Allegro ACS712 current sensor. Part 2 – Interface the sensor with a PIC microcontroller

In the first part of this discussion, the features of ACS712 device were briefly discussed. Now we will use that theory to implement the ACS712 sensor to make a simple DC current meter. The analog output voltage from the sensor is measured through an ADC channel of the PIC16F1847 microcontroller. A voltage to current conversion equation will be derived and implemented in the firmware of the PIC microcontrol ...

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Quozl’s Temperature Sensor Project using PIC12C509

Introduction Just a handful of components builds an 8-pin microcontroller based circuit for temperature logging via a serial port; small, fast, and acceptably accurate. Features provides real-time data to your computer via serial port, interfaces up to four DS1820 temperature sensors, absolute accuracy near 0.5 degrees celcius (as per DS1820 specifications), relative accuracy near 0.01 degrees celcius, spea ...

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Easy Pulse mikro – A mikroBus compatible pulse sensor

Easy Pulse mikro is a new addition to our Easy Pulse Sensor series. The word mikro signifies that it’s an add-on board in mikroBus form factor, which enables easy integration with mikroElektronika‘s numerous development boards. Similar to our original Easy Pulse V1.1 and Easy Pulse Plugin, it also operates on the principle of transmittance photoplethysmography applied to a fingertip using infrared sensors. ...

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3D magnetic sensor from Infineon

Infineon will have engineering samples of a 3D magnetic sensor in July. Called TLV493D-A1B6 performs magnetic field detection in x, y, and z direction allowing the sensor to measure 3D linear and rotation movements. The digital I²C interface enables bidirectional communication between sensor and microcontroller.The sensor is for consumer and industrial applications that require 3D measurements or angular me ...

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AMS uses 3D chip technology for smartphone sensors

Description The AS3721 is a compact System PMU supporting up to 20 high current rails. The device offers advanced power management functions. All necessary ICs and peripherals in a battery powered mobilde device are supplied by the AS3721. It features 4 DCDC buck converters as well as 12 low noise LDOs. The different regulated supply voltages are programmable via the serial control interface. 3-4MHz operati ...

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iProtoXi Aistin: Multi-Modular Sensor Platform

Internet of My Own Things Intelligence without ambition is a bird without wings. –Salvador Dali The Internet of Things has a different meaning for different people. For some, it means monitoring room temperatures from a mobile phone, whereas for other, it is controlling garden lighting from a laptop computer. For sports-minded people, it might mean logging their heart rate in real-time to a cloud service. I ...

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ST shrinks MEMS gyro by 50% for smart clothes

The L3GD20H is a low-power three-axis angular rate sensor. It includes a sensing element and an IC interface able to provide the measured angular rate to the external world through digital interface (I2C/SPI). The sensing element is manufactured using a dedicated micromachining process developed by ST to produce inertial sensors and actuators on silicon wafers. The IC interface is manufactured using a CMOS ...

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Chip senses gesture through electric fields

Description The PS25401A is an ultra high impedance non-contact solid state electric potential sensor. It can be used to detect field disturbance due to the movement of a near-by object. This functionality can be employed in a range of applications including security motion sensors and non-contact electric switches for lighting, door opening, toys etc The device uses active feedback techniques to both lower ...

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ADI moves MEMS gyro sensor to tactical grade

The ADIS16488 iSensor® MEMS IMU is a complete inertial system that includes a triaxis gyroscope, a triaxis accelerometer, triaxis magnetometer and pressure sensor. Each inertial sensor in the ADIS16488 combines industry-leading iMEMS® technology with signal conditioning that optimizes dynamic performance. The factory calibration characterizes each sensor for sensitivity, bias, alignment, and linear accelera ...

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DHT22 (AM2302) Digital Humidity and Temperature Sensor Proteus Simulation

Like the DHT11, the DHT22 is a digital humidity and temperature sensor which has more benefits than DHT11 like: High precision and range. If we want to understand this topic we have to read the DHT22 datasheet and see how this device works and its characteristics. Note that the DHT22 is available only on Proteus version 8.1 or higher, version 8.0 or later will not work therefore you have to update your vers ...

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