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? EV3’s in Daisy Chain mode plus WiFi

If you have two or more Lego Mindstorms EV3’s in daisy chain mode, it is not possible to use a Wifi connection with the EV3 as well. For our project, we need this functionality. Two embedded software engineers in our team are now updating the firmware to make this work. But are we going to be in time….? From a project management perspective, it is always wise to have a fallback scenario. But is there one….?

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Ticket Dispenser Unit (complete), version 2017

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.
Ticket Dispenser Unit (LDD)

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