Skip to main content

IoT Hackathon Part I : Setting up your Raspberry Pi

In September (15th and 16th) we will be organising an IoT Hackathon together with Oracle. I will write several post here concerning IoT, starting with this one where I tell you how to do the default setup of your Raspberry PI. See also this two minute tech tip that is an intro to this post.

For configuring your raspberry Pi there are several options. I prefer to use a keyboard, monitor and mouse so I can actually see what I am doing. The Pi has several USB ports and also an HDMI port.



So if you have a monitor, keyboard and a mouse available, you can plug those into your Raspberry Pi and you are all set. Connect to the power and the Pi will boot into an initial setup screen that allows you to select your preferred OS. That is of course only if you inserted an SD card in the Pi that contains the various available OS's. Select your preferred OS and click install so that the Operating System gets installed. After a short while, the installation is complete.



Once the install has finished you need to confirm by clicking OK, the system reboots, and you will automatically enter the Raspberry Pi Configuration Tool (raspi-config)


One of the things you should do is to enable SSH so you can actually enter your raspi from a different computer. I'm not sure if it is enabled by default, but just go into the raspi-config, select Advanced Options (8) and go into A4 SSH to enable it.
You can also change the default password (which is raspberry) and the default name of the device (which is raspberrypi).

Reboot one more time to activate the changes, and you are ready to start programming.

If you are happy with commandline interface, you can go wild on that one, but if you prefer to work in a GUI, you will be able to change that by using raspi-config. Open raspi-config by typing:
 sudo raspi-config  
The config menu opens, and you can change the boot option by selecting option(3). So enter this option, change the setting and reboot the Raspberry Pi. It will enter GUI mode and you will have a nice Graphical UI that you can work with.


That will be all for now. I will continue posting about our IoT Hackathon. More info can be found here. 


Comments

Popular posts from this blog

ADF 12.1.3 : Implementing Default Table Filter Values

In one of my projects I ran into a requirement where the end user needs to be presented with default values in the table filters. This sounds like it is a common requirement, which is easy to implement. However it proved to be not so common, as it is not in the documentation nor are there any Blogpost to be found that talk about this feature. In this blogpost I describe how to implement this. The Use Case Explained Users of the application would typically enter today's date in a table filter in order to get all data that is valid for today. They do this each and every time. In order to facilitate them I want to have the table filter pre-filled with today's date (at the moment of writing July 31st 2015). So whenever the page is displayed, it should display 'today' in the table filter and execute the query accordingly. The problem is to get the value in the filter without the user typing it. Lets first take a look at how the ADF Search and Filters are implemented by...

ADF 11g Quicky 3 : Adding Error, Info and Warning messages

How can we add a message programatically ? Last week I got this question for the second time in a months time. I decided to write a short blogpost on how this works. Adding messages is very easy, you just need to know how it works. You can add a message to your faces context by creating a new FacesMessage. Set the severity (ERROR, WARNING, INFO or FATAL ), set the message text, and if nessecary a message detail. The fragment below shows the code for an ERROR message. 1: public void setMessagesErr(ActionEvent actionEvent) { 2: String msg = "This is a message"; 3: AdfFacesContext adfFacesContext = null; 4: adfFacesContext = AdfFacesContext.getCurrentInstance(); 5: FacesContext ctx = FacesContext.getCurrentInstance(); 6: FacesMessage fm = 7: new FacesMessage(FacesMessage.SEVERITY_ERROR, msg, ""); 8: ctx.addMessage(null, fm); 9: } I created a simple page with a couple of buttons to show the result of setting the message. When the but...

ADF 12c : Using Jasper Reports en JasperSoft Studio 6.1; What Libraries do you need?

Over the last couple of years, or better in the last decade I have implemented several reporting solutions with Jasper Reports in ADF. I did that in ADF 10g, ADF 11.1.1.x, ADF 11.1.2.x and ADF 12.1.x I also used several version of Jasper Reports. There is a whole lot of documentation, blogposts and presentations available. So when today I got a request from one of my customers to make a setup for the implementation of Jasper Reports 6.1 in ADF 12.1.3 I did not expect any problems. Boy was I wrong. Here is the Story With all the knowledge from the past, I decided to follow the known steps. 1) Download iReport Designer, 2) Build a report in iReport 3) Create an ADF application 4) Add the necessary libraries to use the report 5) Call the report from a button via a Managed Bean Step 1 In the past I used iReport designer to build the reports. When you go to the download site of iReport designer you now see an interesting message. So I took this serious and decided not to u...