Tag Archives: Arduino project


Irrighino: A complete watering system based on Arduino Yun

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Luca’s Irrighino is a complete automatic watering system using Arduino Yun, and features a configurable number of solenoid valves, AJAX web interface, programmable weekly schedule, and manual activation/deactivation. Luca writes,

An Arduino Yun – the “brain” of irrighino – is connected to the switch panel (with phsical switches and status leds), the rain sensor and the relay board that controls the solenoid valves. Yun is also connected to the home wifi network: a device (PC, smartphone…) connected to the same network can open the irrighino webinterface and configure and control it.

If you have an Internet connection, with the correct NAT (Network Address Translation) settings you can also manage your watering system from a remote location!

Irrighino Schematics

Irrighino Schematics


Check out the demo video here:

Arduino-based DIY antenna analyzer

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Antenna analyzers are a common tool used for troubleshooting antennas and fine tuning them for optimal performance. They might cost anywhere from a couple hundreds dollars to thousands based on quality, features, and frequency range of operation. For a low frequency application (< 30MHz), this Arduino-based DIY Antenna Analyzer can be build under $40. The key component of this design is the AD9850 DDS module that can be bought on eBay for less than $5.

DIY antenna analyzer

DIY antenna analyzer

The following video shows the demo of this project.

via [Hackaday]

TAHMO to deploy a network of 20,000 weather stations in sub-Saharan Africa

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Team TAHMO is planning to build a network of 20,000 weather stations throughout sub-Saharan Africa for better weather forecasts, early warnings, and climate observations, which will eventually lead to improved food production in Africa.

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TAHMO aims to build a network of 20000 weather stations in Africa

TAHMO stands for “Trans-African Hydro-Meteorological Observatory”, a program that aims to design, build, deploy, and operate a network 20,000 weather stations in sub-Saharan Africa (www.tahmo.org). Presently, we have pilot stations in Senegal, Chad, Nigeria, Uganda, and South Africa and “pilots at scale” in Ghana and Kenya.

TAHMO stations have to be be affordable and robust. For example, unlike standard weather stations, there should not be any moving parts as these are quickly affected by dust and insects. Maintenance so be limited to some simple cleaning. The network makes use of the availability of cell-phone coverage that has reached most of Africa over the past decade.

Presently, we work with stations developed by Decagon that come close to TAHMO specs. These stations cover all standard meteo measurements such as air temperature and relative humidity, wind speed and direction, incoming solar radiation, and barometric pressure.

 

DeskPomo to improve productivity at work

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DeskPomo is a time managing machine implementing the Pomodoro Technique  to break down your work duration into intervals of ~25 minutes length, separated by short breaks, to improve the productivity.

DeskPomo time manager

DeskPomo time manager

The Pomodoro Technique is a time management method developed by Francesco Cirillo in the late 1980s. The technique uses a timer to break down work into intervals traditionally 25 minutes in length, separated by short breaks. These intervals are known as “pomodori”, the plural of the Italian word pomodoro for “tomato”. The method is based on the idea that frequent breaks can improve mental agility. —-copy from wikipedia.

As a maker, I’m really look high to the working productivity. Since that, I’ve been trying to use some time management app on my iphone. But after a period using I find out that the phone was just maked me distract all the time. I have been spent a large amount of time when facebook or twitter notification comes up which I don’t even notice. Finally, I‘ve decided to pick up my seeeduino and work out these little cute gadget which keep me focus on work.

Yet another home automation project

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Saiyam’s bedroom automation box is a standalone and multi-feature home automation project using Arduino with a set of six sensors which can be used in combination with each other to control home appliances like fans, coolers, lightening systems, etc.

Home automation using Arduino

Home automation using Arduino

You just need to connect your appliance to the power socket present on the box with a plug that makes connecting anything easily. The device asks you to set a mode which means, which sensor you want to use for controlling the output (see all the modes below). Further it asks you to threshold for the sensor you have chosen (like threshold temperature for temperature sensor) which on crossing that threshold, the appliance connected either turns on or off (depending on the sensor). But that’s not it! This device can also protect your valuables at night by switching on the security mode. Still not over! It also has a timer mode in which you can just set the time in hours and minutes you want your device to be switched on. Just one more. It can also act as a weather station by sending you the temperature and humidity of the place that it is kept.

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