Raspberry Pi – Part IV – Simple Wiring Test

I am plugging away working with my Pi. I went back to the Ada Fruit Site, and started working on one of the tutorials from the part I purchased – https://www.adafruit.com/products/2125   I want to be able to demonstrate a simple wiring with my Pi works. I selected Email Notifier. I read through it, and realized I needed to convert it to work for the B+ model. The pi4j website has a nice diagram for the pins http://pi4j.com/images/j8header-b-plus-large.png and I simplified the test a bit. I launched the simple python file pi@seconds ~ $ sudo python testPi.py I added the pi4j…

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Raspberry Pi – Part III – Setting up Jetty

The Raspberry Pi is a device that has so many options open: You can extend the hardware. You can extend the software. I choose to tackle extending the software to start, so I can get the experience that I want setup, and running on the device.  The experience I am after is the web interface to control my Raspberry Pi. For a Java developer, I conclude that a lightweight interface hosted on a Jetty server is probably easiest.  The Jetty server is a 12.9M download and 30M expanded. It’s also used frequently in devices, and why reinvent the wheel, use…

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Configure WLAN0 on Raspberry Pi

I  don’t know how I did it.  I lost wireless connectivity, so I was forced to plugin my Raspberry Pi to the Lan.  Once, plugged in I could find it via the DHCP table on my router. I first checked the iwlist wlan0 scan to see if my home network was listed.  The home network was listed.  It was. I checked the wpa_supplicant configuration ~ $ sudo vi /etc/wpa_supplicant/wpa_supplicant.conf  and confirmed it pointed to the right network. I also checked dmesg to see if there were any hints for wpa_supplicant. I looked at the /etc/network/interfaces and found iface wlan0 inet…

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Raspberry Pi – Part II – Get Up and Going with Java

In recent weeks, I haven’t revisited the Raspberry Pi – Running, Vacation, Work have conspired to keep me away from hobby project. I’ve stared at the parts long enough, and decide to plug the Raspberry Pi base into the wired network. I plugged in the Raspberry Pi into the Power outlet, and I got the Red Light.  I logged into my router to see if the Pi picked up the Raspberry Pi, and I found the IP from my routers IP reservations table.   I was able to SSH into the Pi and quickly check the release version ( cat issue…

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