Pebble Ping Pong

P1110630 (1280x960)

I just finished my first watch app for the Pebble Smartwatch. It keeps track of the score during a table tennis match. It’s still in beta stage so I’m glad when I get feedback.

Since it currently seems to be impossible to embed a YouTube video without it loading tracking scripts the video can only be viewed directly on YouTube.

You can find the details and the downloads on this page.

MFRC522 and Arduino

Today the MFRC522 RFID reader I ordered some weeks ago arrived. Using it with an Arduino proved to be pretty easy after I found this blog post.

Arduino Nano and MFRC522 RFID reader on a breadboard
Arduino Nano and MFRC522 RFID reader on a breadboard

Continue reading MFRC522 and Arduino

First steps with the LM4F120 LaunchPad

I now have an interesting idea what I could use the LaunchPad for. I don’t want to tell too much about it yet, but I ordered a GameBoy camera I want to connect to it, so now I need to take a look on how to program it.

Continue reading First steps with the LM4F120 LaunchPad

Now on Facebook

As an early Christmas gift this page can now be followed on Facebook.

Stellaris LaunchPad

New Stuff: Two Stellaris LM4F120 LaunchPads by Texas Instruments arrived today.

Continue reading Stellaris LaunchPad

Prototype for boat controller

So, the prototype is working. Not very beautiful, and the soldering sucks, but it works and it spares me from putting a breadboard in the boat again. Below the circuit board is the Arduino Mega which is currently operating as the test platform, on top of it are the MRF24J40MA wireless module and the Adafruit Ultimate GPS receiver.

Now I only have to build something similar for the bluetooth bridge, make some adjustments to the software and I’m good to run another life test on a lake (without having to fear that the boat wanders out of bluetooth range).

Continue reading Prototype for boat controller

MRF24J40 Bluetooth Bridge

So, I got my wireless bridge working. Here are pictures of my setup, an Adafruit Ultimate GPS module happily sending its location to my Android phone.

The Arduino sitting out of my window on the roof is connected to the GPS receiver and one of the two MRF24J40MA modules. Continue reading MRF24J40 Bluetooth Bridge

MRF24J40 and Arduino

So, after some trial and error I managed to interface the MRF24J40 modules with two Arduinos and have them exchange data.

This looks more complicated than it is. Continue reading MRF24J40 and Arduino

mrf24j40 testing

One mrf24j40 module connected to an Arduino Nano, the other one to an Arduino Mega … looking awesome, but not yet working.

New toys

In the last couple of weeks some interesting new toys I ordered arrived. First, two MRF24J40MA wireless transceivers. I actually had them lying around for a while now, but I wanted to wait until the GPS receiver arrived as well before I start playing with them.

Continue reading New toys