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Arduino based weather station with multiple sensors

Weather stations are one of the most common projects around hobbyists. You actually don’t need much to build one. For instance Andre Sentosa put together one of its versions. He took Arduino boards for the brains, then attached a bunch of various sensors including DHT11 humidity and temperature, BMP185 barometric sensor, rain drop sensor and soil humidity. With a bit of code he was able to log data to serial monitor. There are still plenty room for more sensors like LDR, wind speed and so on to make it more advanced. IF you are thinking on getting serious, you should also think about remote data transfer and convenient logging. Continue reading

Simple weather station on Intel Galileo

Intel Galileo is an Arduino on steroids. It comes with powerful Intel Atom processor running Arduino Linux distribution. It has most components that normal computer would need including USB host and client, Ethernet and Mini PCIe port that can accept many more peripherals like WLAN from laptop. And most important that it can be programmed from Arduino IDE. Øyvind have shared his latest weather station project built on this platform. He used popular DHT11 temperature/humidity sensor to get readings. He wanted to log readings to SD card so before it was possible he had struggled a bit while he found proper format for it. FAT32 formatting did the trick. The code is really short and simple to follow. Continue reading

Autonomous Arduino weather station

Weather station is interesting project to build. First of all you can collect lots of interesting data, analyze it and even use for various purposes. Tinkerman wanted to build completely autonomous weather station that would power itself using battery accompanied by renewable energy source like solar panel. As a base he’s chosen Arduino Fio board where he attached XBee module to send data wireless, DHD22 temperature and humidity sensor, and BMP085 barometric pressure sensor. While working with sensors seems pretty obvious – code is mostly based on ready made libraries. But more challenging task with autonomous devices like this is power profile. Power usage has to be minimized to preserve energy in all corners. As we mentioned, it uses a solar panel which is 6V 2W to charge 3.7V 850mAh Lithium Polymer battery in day time and use it when dark. Sensors like DHT22 require some warming up, transmitting data chews its own amount. But most time station stays in power down mode leaving with ~0.8mA average current drain. With 850mAh battery weather station could last 44 days. Also solar… Continue reading

Simple Arduino weather station

Do you want to see actual temperature outside the window? Then you should build a weather station for yourself – its easy. Once you have Arduino it becomes even more easier. All you need is to stick couple of humidity/temperature sensors SHT21 and you are ready to go. sspence also equiped Arduino with 4×16 LCD display where temperature and humidity values are displayed in convenient way. Arduino is povered with Litoum battery pack – so this thing is portable and can be used anywhere. Continue reading