Delta robot (flex picker) for Lego World 2017

A completely new delta robot has been build for Lego World 2017. The robot is based on the ABB FlexPicker Robot. You can read more about building the Lego Version at Eurobricks.

More photos are available at our Flickr page: Flickr.com/user/siouxnetontrack/deltarobot and videos are available at Youtube: youtu.be/user/siouxnetontrack.

Enjoy reading,

Hans

Pneumatic compressor for the 6-axis robot arm with auto start/stop

The grabber of the robot arm is opened and closed by pneumatic pressure. Therefore, I needed an air compressor that can generate a pressure of approx. 20 – 30 Psi. But how do you manage this air pressure? If the motor keeps running, the air pressure becomes too high. If you switch the motor on and off manually, you need to stay alert and watch the manometer if the air pressure doesn’t become too low. The solution: build an automatic start/stop system. In this article you can read how I achieved this.

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How to? Synchronizing two threads

In the EV3 programming environment, it is possible to start multiple threads. For example, you want two motors to run simultaneously and when both motors are finished, you want to play a sound. But there is no default mechanism in the programming environment to continue with the main thread when the second has also finished. InĀ  the example below, the “Ready” sound is played too early if motor A finishes before motor B is finished.

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Loading the train with the 6-axis DOF robot arm

I wrote a small test program for the robot arm to load the train with two containers. Loading the two wagons was done in one minute, so much faster than the candy crane.

Have a look at the video and please share with me what you think of it.

Lego World 2016, here we come …

Lego World Utrecht 2015

Sioux.NET on Track will be showing their layout at Lego World 2016 in Utrecht, The Netherlands. The layout will be present on Saturday Oct 22 until Monday Oct 24.

This year, the layout will be controlled by 13 Mindstorms bricks (1 x NXT and 12 x EV3). Four visitors in a row can choose a color and the train is getting them in one run. New items in 2016: completely redesigned candy factory, candy crane with power chains, redesigned delivery station and much more.

Videos of the building in progress can be viewed at the Youtube channel: www.youtube.com/user/siouxnetontrack.