Archive for the ‘hardware’ Category

Been busy Blackstripezing…

Saturday, January 19th, 2013

So long time no writing, but here’s a small update with what we were busy with for the last couple of months. The most important project on our own behalve, was: Blackstripes.com our DIY lineplotter project (build hardware as well as the software for this baby), first press coverage was with popular Dutch Magazine (digital technology, design & style): Bright.nl. David Lemereis wrote a nice article about us. You can read all about that here (in dutch). Lately we were picked up by major tech site wired.com. This gave us quite some exposure in the Raspberry Pi scene. Nice…

Blackstripes.com on wired.com

Blackstripes.com on wired.com

As you are picked up by a major site, news goes around fast and soon more blogs/websites are following (Adafruit, T3N amongst others):

Adafruit a major component supplier

Adafruit a major component supplier

German site T3N picked up on it too

German site T3N picked up on the news too

So what is this project all about? Blackstripes is our Robot which draws your pictures and you are able to purchase your own picture/photo as a drawing in the webshop as well!
Read more about it here: blackstripes.com


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Arduino Wireless Motion Tracker

Monday, June 25th, 2012

We have lately been working on some projects that involves measuring and interpreting  motion with inertial sensors.  We have done experiments with iPods, iPhones and other dedicated motion trackers.

We also tried to create a tracker on our own using the Invensense MEMS mpu-6050 chip. It’s a 6 dof inertial motion sensor with an embedded tri-axis gyro and tri-axis accelerometer and some kind of motion processing unit  on it as well. Getting the data from this sensor on our iPhone took al little more than just ordering this chip so we decided to use the Sparkfun break out board version, together with the WiFly shield featuring a Roving Networks wifi unit and put them both on an Arduino Uno. It took some fiddling to get the wiflly board  into adhoc udp mode, but now we were able to connect an iOS device on the adhoc wifly network and transmit UDP messages containing sample data from the mpu-6050. Using a tweaked GLGravity example xcode project as a data visualization tool we had a nice prototype of this little system. Right now we are able to get 20 captured samples per second over the air to the iPhone but it appears that by forcing the UART of the wifi unit into an higher baud rate (and also the UART baudrate on the shield itself) could easily increase the framerate. We haven’t tested this yet though.

Arduino Wireless 6-dof Motion Tracker

Arduino Wireless 6-dof Motion Tracker

As you can see in this photo I’ve soldered the mpu-6050 breakout board just beneath the wifly shield onto the prototyping section on this shield. To keep things nice and compact. In a practical situation it might be not ideal to have the chip upside down. Beneath you can see the board in action ;-)