ESP8266 WeatherStation Color

Yesterday I started playing around with a TFT color display connected to the ESP8266. First I adapted example code to download BMP files to the flash memory, and boy, this display has some nice intense colors! To get an idea how a color version of the Weatherstation would look like I got a little creative and designed a image mockup and uploaded it to the [...]

Read more

Turn on/off USB Power on TL-MR3020 running OpenWrt to restart Arduino

In a later blog post I will describe how I am using a TL-MR3020 router as low-cost wifi shield for my Arduino to transmit sensor data over wifi. In this post I just want to [...]

Converting keystores

JKS to P12 keytool -importkeystore -srckeystore keystore.jks -srcstoretype JKS -deststoretype PKCS12 -destkeystore keystore.p12 P12to JKS keytool -importkeystore [...]

Use Tunlr on Boxee to watch Netflix outside of US (e.g. Germany, Switzerland)

The following how-to describes how you can watch Netflix on your boxee even if you are living outside of a country where Netflix is available. First of all you need a [...]

Using munin to visualize your arduino sensor data

I was looking for the easiest way to visualize the sensor data my arduino in the basement is sending to the linux server. The server receives a data triple every few seconds [...]

How to create an maven archetype from an existing project

Use mvn archetype:create-from-project to create an artefact from an existing project. Have a look in the target folder, where you'll find the new artefact. [...]

UIBinder: load background images in the bundle

It took me a while to figure this out, but finally I found a solution to load CSS background images for styles defined in a *.ui.xml: Copy the image to the same package as [...]

New tricks; revamped user interface

August 1st is the national holiday in Switzerland. Having a longer weekend also lets me work more on Feederator. In the last few days Feederator learned some cool new tricks, [...]

Exporting your App Engine Data with a Sitemap of Sitemaps

Currently there are about 200'000 archived items available in the Feederator database. In the hope to attract more traffic I wanted to make this data available to search [...]

Feederator, Kindle and PDF

I'm using Feederator myself to send interesting posts to my Kindle to read it later. To do this you can simple drill into the detail view of a post. There you'll find a social [...]

Speeding up data store queries with self-merge joins

For a while now Feederator allows some kind of full text queries. When items are read for the first time into the datastore an index will be created. This index is currently a [...]