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.
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.
As you can read in the first article about the Ticket Dispenser Unit (click here for the article), the version for Lego World 2016 a ‘fast build’. Nevertheless, it worked almost flawless. Almost … sometimes the card was not transported to the end. With just some small modifications, it works even better now.
A video impression of our layout at Lego World Utrecht 2016 has been uploaded to our Youtube channel.
One of the items that needed to be designed and build, were the lockers for the Delivery Station. As described in the article “Engineering the new delivery station for Lego World 2016“, the lockers are (literally) the final part of the the delivery station. The lockers form the part where the visitors can grab their candy. The main challenge for the lockers was to design a door that would be appealing for the visitor. So, not just a typical locker as can be found in a gym or school. But what then … a sliding door? A garage door? A bus door?
All years, we use a color selector device (we call it the PUI, the Physical User Interface) as the starting point of our track. Over the past years, the PUI looked like this: