After the Yun presentation post, we are going to present a simple hacking project that is cool to get familiar with the Yun features. In this post, as first taste of using Arduino Yun, we propose an example about using the Temboo API, coupled with the Bridge library to send a Tweet in correspondence of…
As you probably know if you have one, the overall printing quality of the 3Drag printer is very well suited for the creation of useful items: this time we have created a container for the autonomous printing system. This post, by the way, could really be a good inspiration and guideline not only for the…
A few days ago we showed you how to use the Raspberry GSM shield using the arduPi library created by Libelium and available under the GNU General Public License that you can download from Cooking Hacks. Now we’ll see a further functioning mode, one that allows you to interact directly with the serial port using…
Here’s an application to control the brightness of an RGB LED strip wirelessly (via Bluetooth) using a smartphone. The whole project is presented in a dedicated Bluetooth shield for Arduino and a RGB shield. The Bluetooth Module You’ll know already that the market is full of different Bluetooth modules: these modules are all based on…
Controls the ignition of lamps or other electrical loads when the brightness of the environment falls below an adjustable threshold. There are circuits that never get old and withstand time, progress, and emergence and spread of a variety of microcontrollers and boards, perhaps because there is always a need of something simple, cheap and…
Today we introduce a great LCD expansion shield for Raspberry Pi that allows you to create an interface to control applications without the need to constantly keep a monitor, keyboard and mouse connected. Cool! Isn’t it? The enhanced value of a micro PC as Raspberry Pi with respect to a classic microcontroller is to…
In this post we’ll cover the design of a microphone preamplifier, something always useful when dealing with audio applications. This Mini Microphone Preamplifier could be used as the first stage to amplify any audio signal. The device is equipped with a microphone plus clips to be connected to a 9V battery. Amplification is achieved by…
In this post we will deal with an interesting solution to overlat text on a video signal. This solution, which uses the LM1881 integrated, has a lot of use cases accompanied by variable software challenges. For this reason this post is a kind of tutorial, presenting no vertical solution, but instead providing an overview…
RFID Tags are increasingly used for many applications such as identifying objects by means of a code or access control. In logistics RFIDs allows asset tracking, or monitoring conveyor belts; in shops tags are often used as anti theft. RFIDs are also used for presence detection and security, with several use cases, for example in…
Electricity costs are rising, and just in case this is not enough, if you exaggerate with consumption your house circuit often stops working in the very moment of your greatest need. This project allows you to keep an eye on your electricity instant consumption even remotely. [iframe_loader src=”http://emoncms.org/boris&id=2505 ” ] The acquisition of current consumption…
Once again we have prepared some examples related to the GSM/GPRS & GPS shield. In previous posts we have seen how to handle SMS, make calls and use the GPRS connection to send email or download data from Internet pages. The shield has been developed to accommodate both forms of SIMComs: SIM900 and SIM908: the…
This post follows a first one in which we presented some tips about how to tune printing (with 3Drag but also in general). Here you’ll find 5 more cool 3D prints to experiment with! Porcupine Vase This is an easy print difficulties, with reduced printing times, but it’s. It belongs to the category of…
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