Feb 26

NFC chips

This week I ordered a few NFC chips to play around with using my Android phone. It turns out that these can make a dead easy way to configure your phone!

I’m planning to have one sticker somewhere in my car to configure it for ‘driving’ i.e. turn off Wifi, put it in Car Mode and pronounce it is now in car mode. Then when I leave the car, I’ll swipe my phone over the NFC chip again to toggle it to go back into normal mode, saying the same for confirmation. Nice!

Secondly, I’ll configure another NFC for ‘meetings’: turning to silent mode and back out of it with an easy swipe over the NFC chip.

Thirdly, I’ll try to program another NFC chip to contain my contact data and glue it to the back of one of my contact cards. That way, business contacts can swipe their phone over it and have all the info. Great!


I ordered my NFC chips at http://www.nfc-nederland.nl/, they arrived the next day and the company has a great service. I even received an extra chip! (before writing this article)


On my Android, I used the app NFC Retag (XDA Developers or Google Play) for the actionable tags and NFC TagWriter for writing the contact info NFC tag.

Aug 18



Aug 02

Rasberry Pi and Z-Wave makes Razberry

RazberryOpenRemote Here’s a guideline to setup ZWave.me GPIO addon on your Rasberry Pi and install OpenRemote.

ZWave.me addon module is bought separately from the Rasberry Pi and can be plugged in using the GPIO pins on the board. So far, for the hardware setup 🙂

Setup Rasberry

  1. Download the hardfloat version of Raspbian “wheezy” here.
  2. On Ubuntu:
    Plugin SD card
    Unmount card (df -h to check which devices)
    sudo dd bs=4M if=~/Downloads/2013-05-29….img of=/dev/sdd
    Plugout SD card
  3. Plugin SD card in the raspberry and fire it up
  4. Set timezone
    Enable SSH
    Also note the IP for logging on to your Raspberry.
    (When you already closed the config, start it again using raspi-config)
  5. Add en_GB locale (or the one for your region) and add to /etc/default/locale

Setup R-wave

  1. Logon to Raspberry via SSH or use the terminal
  2. wget -q -O – http://razberry.z-wave.me/install | sudo bash
  3. Uncomment following lines in /boot/config.txt:
  4. Reboot via:
    sudo reboot
  5. Check http://<ip Razberry>:8083 to make sure all is running up to this point.
    The site also provides functions to add new devices, put them on a map, view their state and control them.

Install Java 8

  1. Download file using Raspberry or computer
    Copy from computer to Raspberry using:
    scp jdk-8-ea-b36e-linux-arm-hflt-29_nov_2012.tar.gz pi@
  2. Logon to Raspberry and execute:
    tar zxvf jdk-8-ea-b36e-linux-arm-hflt-29_nov_2012.tar.gz /opt
    sudo update-alternatives –install “/usr/bin/java” “java” /opt/jdk1.8.0/bin/java 1
    sudo update-alternatives –set java /opt/jdk1.8.0/bin/java
  3. Add JAVA_HOME to /etc/environment:
  4. Add JAVA_HOME and PATH to ~/.bashrc
    export JAVA_HOME=”/opt/java/jdk1.8.0″
    export PATH=$PATH:$JAVA_HOME/bin
  5. Reboot using:
    sudo reboot
  6. After logging on again, Java can be verified by executing: java

Install Open Remote

  1. Download from the site using Raspberry or computer
    Copy to Raspberry using:
    scp OpenRemote-Controller-2.1.0_SNAPSHOT-2013-06-17.zip pi@
  2. Logon to Raspberry and unzip to /opt
  3. Install librxtx-java using:
    sudo apt-get install librxtx-java
  4. Copy file librxtxSerial.so to OpenRemote:
    cp /usr/lib/jni/librxtxSerial.so /opt/OpenRemote-Controller-2.1.0_SNAPSHOT-2013-06-17/webapps/controller/WEB-INF/lib/native/librxtxSerial.so
  5. OpenRemote is started by going to /opt/OpenRemote…../bin and then start using:
    for debugging use: sudo ./openremote.sh run
    for running in the background use: sudo ./openremote.sh start
  6. Verify all is working by visiting http://<ip razberry>:8080/controller
  7. Sign up for an account at OpenRemote here, this is required for the controller (sync panel/ configuration). Logging on to this site enables you to configure OpenRemote. After that sync. When synced, the configuration is loaded and the panel can be opened via http://<ip razberry>:8080/webconsole.
  8. After configuring RRD4J, graphs can be viewed via http://<ip razberry>:8080/controller/graph?name=temperature


Upgrading the firmware of the Raspberry Pi via:rpi-update


Update all software on the Raspberry Pi via:
sudo apt-get update && sudo apt-get upgrade

Oct 23

Autumn Lage Vuursche

Sep 16

Harley Davidson

Sep 13

Park Assist

Snel en gemakkelijk gebruik maken van je bezoekersvergunning? Dat kan met Park Assist!

PA slaat de gegevens van jouw parkeervergunning op. Wanneer je bezoek krijgt hoef je alleen het kenteken in te vullen en op verzenden te drukken. PA zal een SMS naar de gemeente sturen en bij ontvangst van de bevestiging automatisch een alarm zetten. Makkerlijker kan niet!

De app is te vinden in Google’s play store.

Aug 16

Utrecht by night 2

First shot with a small light trail that looked good, so I set the exposure or bit longer to get a longer trail from right to left.

Aug 12

Utrecht by Night 1

I took this picture while doing a photo shoot through Utrecht together with a friend of mine.

May 20


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