Blog Archives

Arduino and the opensource movement

When we talk about OpenHardware we are talking about all this devices whose specifications, schmatics and internal characteristics are known by its comunity of users. We apply the same filosophy of OpenSource to the world of electronics. We have to remember that open is not the same as free.

One of the first OpenHardware platforms and, certainly, the most famous is Arduino. This platform is based on the microcontrollers Atmel Atmega series. In its history It have appeared different versions aimed at different types of projects, varying power microcontroller, size or functionality. The grace of these types of platforms is that you can buy it at the official website for a small fee, or make your own custom development, but in all cases you have lots of expansions (called Shields), a large community of users and an endless source of resources, documentation, examples, etc … from there the only limit is your imagination.
GRN is Arduino distributor and you can find Arduinos and related accessories in our store.

Sincronització de correu, calendari i contactes entre diferents dispositius

Ja fa anys que gaudim d’una bona solució per sincronitzar el correu electrònic entre diferents dispositius i que a la vegada ens aporta la seguretat de tenir una còpia de seguretat dels correus al servidor: el protocol IMAP.

El creixement del mercat de smartphones i tablets ens ha abocat a unes noves necessitats de sincronització, normalment del calendari i els contactes. Grans empreses com Google amb el Google Calendar i el Google Contacts, o bé com Apple amb el seu servei iCloud ens ofereixen serveis per sincronitzar calendari, contactes i altres dades entre diferents dispositius.

Hi ha moltes solucions i serveis per a les nostres necessitats de mobilitat i sincronització. A GRN provem i busquem les solucions que més ens satisfan i les posem a l’abast dels nostres clients. Les nostres solucions busquen la personalització a cada client, ja que les necessitats i dispositius no són els mateixos per tothom.

Si vols més informació sobre mobilitat i sincronització, la trobaràs a aquí o bé ens pots enviar un mail a

Solucions de firewall i VPN per a totes les necessitats

Busquem productes basats en software lliure per a les nostres solucions de Firewalls i VPN’s. T’assessorem, instal·lem i mantenim la solució que més encaixa amb les teves necessitats.

GRN and Adamo deploy a Fiber Optic network in Girona

In early 2014 Adamo begins to deploy a fiber optic network in the city of Girona with the aim of providing coverage to homes and businesses with speeds up to 1000Mbps.

As Adamo announces on his blog in April 2014 comes into operation the fiber optic network of Girona. Adamo connects to a fiber optic ring the city of Girona with its core in Barcelona and the cities of Vic and Lleida. FTTH header of Adamo is housed in the GRN’s datacenter and we hope we can expand the range of services of the 2 operators.

For coverage Adamo found here.


We are Arduino distributors

Our interest in technology in general has led us to offer an online store with a selection of the products we use for our own electronic projects, following the maker philosophy a bit. In this line we have become distributors of Arduino, the open source hardware platform best known at the time.


You can find this products and some accessories at the Arduino section of our online store.

Online store news

GRN reruns its online store with a new engine and new products. In addition to products for firewalls and VoIP PBXs, we released new sections to reinforce the philosophy maker and DIY.

The new store products allow you to introduce yourself in this world. We thought basically in the Arduino and Raspberry Pi OpenHardware platforms, which are the most popular now. In the shop you will also find accessories, some of them from

Debian 7.0 Wheezy stable

Debian has just introduced its new stable version, 7.0. Debian uses character names from the movie “Toy Story” and the new version is called “wheezy”. The new version includes many new features, among which include cross-platform support, tools oriented to the new cloud technologies and a set of multimedia codecs to eliminate the need to install third party software.

We also note that the Debian operating system is available in Catalan and can be installed on multiple architectures, not only PCs but also modern devices like Raspberry Pi minicomputers. This version now supports the new UEFI boot systems. Over 36,000 free software packages at your disposal, updated to the latest versions and tested by the community of Debian developers.

Remember that when installing your Debian netinst version you can use GRN’s repositories found in

GRN renews its web

We had to do a facelift to our website and we’ve done it! Apart from cosmetic changes to conform more to the times, we have made changes that allow accessibility from mobile devices such smartphones and tablets. In addition, we have added new products, we have expanded the information and, importantly, we have incorporated the prices of most products.

We hope you like this new layout, continue making small improvements and welcome any suggestions!

GRN sponsors FLL Girona teams

As usual, GRN sponsors robotics La Salle Cassà’s school teams. These teams participate in the FIRST Lego League Girona. This year there have been two teams and one Junior FLL team. In the picture you can see the 3 teams with their coaches.

The Geeks de la nit team has won the award for best coach: “Recognition to the coach who has excelled in their dedication, patience, guidance and devotion.” This group consists of 6 boys and girls in 2nd and 4th ESO. The Androids Cassà  is other team that has won the award for Robot Design: “Recognition to the team that has surprised by its innovative and creative work globally in mechanical design, programming and Robot Strategy and Innovation.” The group consists of 10 boys and girls ranging from 5th grade to 4th ESO.

For the first time in Girona also made ​​a smaller meeting (early primary grades) with the presence of a third group of La Salle Cassà. The group was called MonsterHigh Cassà and consisted of 5 girls from 2nd to 4th grade.

You can see pictures of our teams on the website of AMPA school.

At the posts of the site the Foundació Princep de Girona has more information about the event.

To learn more about the FLL can go to the official web site in Catalan or English.

GRN sponsorizes a Trailwalker IO team

The team, called Km GRN, will participate in the 2013 edition of the Trailwalker Intermon Oxfam that will happen during the 20 and 21 April. You can follow the evolution of the team through his blog and the progress of donations in the team page.

Dare to make a donation to any of the Trailwalker teams, is for a good cause and money well spent!