Category Archives: Video

Presentation BHT 2016

I will hold a small presentation about Low-Cost in a Robotic-Context at the BHT 2016. It will start at 17.00 at the Helmut-Härtig-Building of the Technische Universität Bergakademie in Freiberg.

Links:

Slides

in german, due to copyright, I removed some of the pictures:

Controlling ws2812b with an esp8266 by open-pixel-control protocol

Harder than it looks but controlling an 5m led stripe using the esp8266 by the open pixel control protocol took me a night (and might be the reason for extra bad english as i write this post directly after it). But it’s real fun!

There are several ways to make the controller blink, the easiest way is shown here:

For the duration of infintiy, it sends the static header consisting of 4 bytes ( prio, command and checksum) followed by 8bit red 8bit green and 8bit blue for each led of the stripe. It gets the blinking values by asking the source of random in linux.  It lacks a bit of white as my power source got to its limits, so if you reimplement this use 5V and 1A per 30 leds.

Another thing to mention is the data length field which are bytes 3-4 of the header or \x02\xA6 as in the command above. This length needs to equal the amount of leds times three, so in this example 226 Leds where controlled as the bytes in network order end up to be 678.

This results in that little animation:

Another possibility is to send these packets by a small python script like that:

Code for the controller at github.

Complex Low-Cost Robotics – Lighting Talk at Datenspuren 2015

Hi there, I did a small lightning talk at the Datenspuren 2015. I expect the talk to be recorded but not published yet. All videos will be available at the Dataspuren Recordings Page. But in case you want to show the slides to somebody download them here.

UPDATE
Talk is online (my part starts at min 37:45) . Because linking didn’t really work, I cut the original video and uploaded my five minutes to youtube. The talk is in German, but I’ve added english subtitles:

To see the mentioned robot in action, you can see this little video I posted some time ago.


Do not hesitate to contact me, I am kinda available to hire and traveling through vienna the next week 🙂

Making Robots Talk and Video

Today I watched a really nice talk about making robots. It’s worth every minute and ideal to dive into the current issues of current robotics by showing different approaches to solve common problems. Therefore the participants are:

  • Russ Tedrake Director, Center for Robotics, MIT Computer Science and Artificial Intelligence Lab
  • Sangbae Kim – MIT Biomimetic Robotics Lab
  • Mick Mountz – Founder, Kiva Systems
  • Gill Pratt – Program Manager, DARPA Robotics Challenge, DARPA Defense Sciences
  • Marc Raibert – Founder, Boston Dynamics
  • Radhika Nagpal – Self-organizing Systems Research and Robotics Group, Harvard University

Six legs two Motors

Hexbug 477-2423 – Scarab XL



available on amazon for 25€ 🙂