Sense The Surroundings

Build your own stand-alone temperature and humidity display with this guide on Instructables. The temperature at any one office varies quite a bit depending on the time of day, season. Although you can get custom made thermometers in less than 5$, however the user decide to build his own even if it cost a way too much then normal sensors. The placement of device was layout on the Prema-Proto Board. The author used a completely open-source electronics design application named Fritzing. It’s compatible with Windows, OSx as well as Linux. Its libraries can easily be found on the internet The microcontroller used in this project is typically sold as a blank chip, but some vendors sell Atmel ATMega328P AVRs pre-programmed with the bootloader necessary to interface with the Arduino IDE. If you’re using a blank microcontroller, you’ll need to burn a bootloader to it with some kind of programmer. For the project you require a basic, DHT22 temperature-humidity sensor, a Prema-proto board , some caps, resistors, as well as multiplexed seven segment display along with an Arduino Continue reading

Temperature sensor and storage for embedded projects

Temperature sensor and storage for embedded projects

I2C interface allows connecting multiple devices using two wires. This interface is very popular in sensors, memory chips and IO expanders. R-B designed compact breakout board where he placed MCP9802 temperature sensor and 24LC512 EEPROM. Module is convenient to use as temperature sensor with ability to log values in to near by memory. So if you decide to unplug sensor – history of data goes with you. 512Kbit EEPROM gives enough space for storing data. Digital temperature sensor is capable of measuring temperatures from -55ºC to 125ºC. Prototyping board is designed so it could be easily plugged in to prototyping breadboard. Continue reading

Microcontroller based Time/Date/ Temperature keeper

Time is gold – so they say. Well people always keeps track of time and often people keeps forgetting about the time then ending up late for work, school and sometimes a date – what a disaster! To help those geeks out there who keeps on forgetting time bogdi put together this nifty contraption that keeps date and time while also having the capability of measuring temperature. A PIC16F628 or PIC16F84 microcontroller is used to keep the date and time information while also driving four seven segment displays and a DS1631 temperature sensor is used to gather temperature data from the surroundings.  The DS1632 temperature sensor is wired out away from the main board so that it could also be used to sense temperature from a specific spot a little further from the controller. It’s the geeky way of telling time! Continue reading

Reading Temperature from DS1820 using 1-Wire Protocol

Temperature sensors come in various shapes and sizes, they also come in different colors and number of pins but above all these differences one difference must not be taken for granted- how to read the temperature data from it. Maybe the simplest form of a temperature sensor is the thermistor, it has two wires, and the resistances between these two wires vary depending on the temperature. This type of sensor requires an ADC to convert the analog signal into digital. However modern temperature sensors now come with their built in ADC and their outputs can be accessed serially. There are three commonly used serial protocols SPI, I2C and 1 Wire, these vary on the number of wires and on the way data is accessed. In this project the DS1820 is used to demonstrate how to read temperature data from a temperature sensor which communicates using the 1-Wire protocol. The DS1820 is a three pinned temperature sensor, it actually looks more like a transistor – but it’s not! PIC16F628A was used to read the temperature data from the sensor, after data… Continue reading

Have a Brand New Experience with Weather Canvas!

Mother Nature is always full with many unexpected surprises. That is why some people enjoy the outdoor activities, such as hiking, trekking, kayaking and so on, rather than staying at home in weekend! The only matter is weather is constantly change and unpredictable. Maybe it full with sunshine in the morning, but it rains heavily in the afternoon! It will cause some difficulty, especially for those who planning to have some outdoor activities. In this case, you might need an assistant to help you overcome the matter. Well, Weather Canvas is coming for the rescue! A little bit different from other DIY weather station, Weather Canvas is a outdoor wireless weather monitoring system coupled with an indoor LED display. For your information, the outdoor system consists of a microcontroller, temperature sensor, humidity sensor, self-DIY anemometer, a Hot Wheels radar gun (It’s for measuring precipitation) and a solar panel to measure sunlight, also charge the microcontroller’s power source! This is how the Weather Canvas works: In the very beginning, the system is transmitting the data it has collected to the indoor… Continue reading

ThermoSmart – The Fine Combination of Arduino and Thermostat!

Some of you here have already known that Thermostat is a device for regulating the temperature of a system. The thermostat is used to control the flow of heat energy into or out of the system. Furthermore, a thermostat can be a control unit for a heating, cooling system or a component part of a heater or air conditioner. The best part about thermostats is they can be constructed in many ways, where is use a variety of sensors to measure the temperature. What will happen, if you combine the Arduino and thermostat together? Yep, you’ll get a new “ThermoSmart” here! This Thermostat consists: An Arduino (Duemilanove), an Arduino Ethernet Shield, a temperature sensor, a relay, transistor, resistors, diodes and much more. Don’t be fooled by the above components, as this project is quite easy to be developed here! Since ThermoSmart is a web controlled and monitored device, thus it can work well in auto and manual mode. Via the web interface, the user can be quickly informed over local network or internet about the current temperature, heating status and… Continue reading