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Make your own remote temperature/humidity sensor

Hardware components: Atmel atmega 328p-pu × 1 ControlEverything.com SI7020-A20 I²C Humidity and Temperature Sensor ±4%RH ±.4°C × 1 433 MHz transmitter / Receiver kit × 1 AMS1117-ADJ voltage regulator × 1 Capacitor 100 µF × 1 Capacitor 100 nF × 1 Resistor 1k ohm × 1 Resistor 10k ohm × 1 LED (generic) optional × 2 Resistor 221 ohm optional × 2 UDOO 2AA Battery Holder for RTC × 1 Software apps and online servi ...

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AVR Microcontroller based Temperature Monitoring and Control System

AVR Microcontroller based Temperature Controller, it uses LM35 Temperature Sensor for measurement of temperature and 16x2 LCD is used to display temperature set point, Heater Status and current temperature, It controls temperature by turning on and off of the heater using relay. This project is very useful for controlling of temperature, It can be used for soldering station to make it automatic temperature ...

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3-axis Accelerometer Sensor-ADXL335 Interfacing with ATmega32

ADXL335 accelerometer sensor is a MEMS (Microelectromechanical systems) sensor which can measure static acceleration of gravity in tilt-sensing applications, as well as dynamic acceleration resulting from motion, shock, or vibration. The accelerometer sensor is used in mobile devices, gaming systems, disk drive protection, image stabilization, sports devices, health devices and etc. The analog outputs are r ...

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Doppler Radar for Collision Avoidance

Introduction My project uses Doppler radar sensors in order to provide the user with movement, speed, and distance information of their environment. An array of Doppler radar sensors are placed on the user�s head and vibration motors are placed on the user�s chest, neck, back, and/or arms in order to provide input to the user without impeding any of their other senses. When something moves within about 25 f ...

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Ultrasonic range-finder with haptic feedback

Introduction "An ultrasonic range-finding hat with variable haptic feedback for obstacle detection." -Project Sound Bite For our ECE 4760 final project, we designed and implemented an ultrasonic range-finding hat that uses haptic feedback to alert its wearer about obstacles in his or her path. The hat is equipped with an ultrasonic transmitter/receiver circuit, which is capable of emitting short pulses of u ...

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Capacitive Touch with Atmel’s AT42QT1070 Touch Sensor IC

Rather than using an out-of-the-box capacitive touch solution for my projects, I thought I’d attempt making my own little breakout board. The idea is to use a sensor capable of triggering normal digital input pins using touch. This post covers the selected touch sensor IC, the circuit used, getting a custom PCB made and how to use it in a project. At the end of this post, you’ll find a video covering the so ...

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An optical dust meter that uses the GP2Y1010AU0F sensor library made with AVR Atmega

This project is a dust detector that use the GP2Y1010AU0F sensor. Attached you can also find the GP2Y1010AU0F sensor library for AVR Atmega.GP2Y1010AU0F is a dust sensor by optical sensing system. An infrared emitting diode (IRED) and an phototransistor are diagonally arranged into this device. It detects the reflected light of dust in air. Especially, it is effective to detect very fine particle like the c ...

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