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About Hanso

  • Birthday 09/27/1966

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  1. Please move the following topics to Mindstorms: Thanks in advance. Best, Hans
  2. Ah, great. Will do. Thanks for the quick reply. Best, Hans
  3. Super news that there is now a dedicated Mindstorms forum. Until now, I have posted my articles in the LEGO Technic and Model Team forum. How can I change this to the new forum? Best regards, Hans
  4. Hi xp10r3r, Thank you for the compliment. You can ask questions at this board or if you leave your email address, I wil contact you. Kind regards, Hans
  5. When the containers-with-candies leave the automatic sorter (see article here), the containers need to be stored at the candy warehouse. In the photo below, you see in the bottom-right the location where the automatic candy sorter will be connected to. From this point, called the supply belt, the warehouse takes over to store the containers. When a candy is requested by the visitor, the warehouse will retrieve a container in the requested color from the storage boxes and deliver it to this location, called the delivery belt. This is the location where the delta crane (see article here) will be connected to and where the warehouse hands over the responsibility. A short video with the working supply belt and delivery belt, can be watched on Youtube: Enjoy, Hans
  6. I've been very busy the last weeks and didn't have the time to write you my updates on building the container warehouse. Fortunately I did have the time to work on it. I needed to redesign some parts: The part that takes care of the platform horizontal movement. Instead of a worm gear that slides along the long axle, I use the 11955 gear (Technic gear 8 tooth no friction). The platform rollers. The previous version was not strong enough, and that resulted in a bad connection to the gears of the storage box. And that resulted in the container being not moved correctly to the storage box. The problems seem to be solved, needs some duration testing. In the video below you see one of the first test runs. In the video, you see only half of the complete warehouse. The complete warehouse will consist of two stacker cranes. Both stacker cranes can access the middle storage boxes (at the left in the video) and one of the outside storages. What has been finished building, has been put together and that looks like this: Enjoy, Hans
  7. Thanks ColletArrow. My colleague is rebuilding the part to separate the candies from the containers. I have seen the first version, and it is looking great. Sorry, no pictures yet. Thanks bombcar. It wasn't too difficult to find a way to push all the bars simultaneously, but I had to think twice to find a way to push it in a supple cuve. Suddenly, I had this Euroka moment. And then it was build in a couple of hours (first a proto, then the final build).
  8. The Delivery Station unloads the train, separates the candies from the containers and delivers the candies to the visitors. The 2017 consisted of four parts: Push mechanism: pushes the containers-with-candies from the train Roller mechanism: rolles the containers-with-candies to the lifts Lift mechanism: lifts the containers to separate the candies from the containers Locker mechanism: candies are stored in lockers, to be opened with the ticket reader The order of the candies needed to be kept, so every visitor received the candy in the color he requested. You can watch the 2017 here (starts at timestamp 2m39s): For 2018, we keep the Push mechanism and the lockers. The part that will take care of separating the candies from the containers, is completely redesigned. The push mechanism however, was rather slow and - as you can see in the video - it needed quite some space due to the slider. So, that needed a redesign as well. You can see the new version here (click on the photo to go to our Flickr page): And of course a video: Enjoy, Hans
  9. Uploaded a new video to demonstrate the work in progress. In the video, two containers are stored in the warehouse. Not only to see if it works, but also to measure the time needed. The loading platform is at the right of the warehouse. The first container is stored at the nearest position to the loading platform (= bottom, right). The second container is stored at the most far position from the loading platform (= top, left). Storing the two containers is less than 75 seconds which is perfectly acceptable. Still waiting for more bricks to arrive to continue building ...
  10. Improved version of the motorized Wheel of Fortune. In the previous version, the motor power was transferred through the axle of the wheel. The wheel is rather heavy, so the torque on the axle was also rather high. In this version, the motor power is transferred to the wheel using the yellow gear rack elements (6151167). Click on the picture below to view the pictures on Flickr: And of course a video: Enjoy watching, Hans
  11. As promised more detail of the improvements. Horizontal movement of the stacker crane In the previous version of the stacker crane, the motor that was responsible for the movement, was build on top of the crane. Resulting in a very long axle going through the left tower to the bottom of the crane. In the current version, the motor is build-in into the left tower. This results in a almost direct coupling to the corresponding gears, and that results in a smooth movement. See the photo below. Horizontal stop locations for the stacker crane The stacker crane needs to stop exactly in front of a container storage. If not, the gears will not connect which results in the container not stored or retrieved correctly. Because of the distance, counting the number of rotations will probably not be accurate enough. In the previous version, the gear racks for the horizontal movement were placed in the middle. In the current version, I moved them to the two sides. I didn't have to move the gears in the stacker crane, so this was a relatively easy change. Having now room 'in the middle', just like the motor that was build-in into the tower, I now build-in a touch sensor into the tower. An axle with a Technic Ball Joint (32474) at the end, makes sure that the axle glides smoothly along the flat tiles. A stop is made by two slopes (85984), the axle with ball joint lowers and the touch sensor goes to 'released' state. Horizontal platform movement In the previous version, the motor responsible for the horizontal movement of the platform, was attached to the slider of the right tower. In principle, this worked fine. However, it has two disavantages: 1) The weight of the sliders and 2) The motor needed a cable carrier. Because the platform also has a motor build-in for the platform rollers and a color sensor for the positioning, the platform would need three cable carriers in total. It might be possible to use one cable carrier for two cables, but definitely not for three. I moved the motor that is responsible for the horizontal movement of the platform, to the top of the stacker crane. A long axle in combination with a worm gear, is used to transfer the rotation to the platform. The worm gear can slide smoothly along the long axle, in the picture below you see how the motor rotation is transferred to the platform, keeping the vertical movement in tact.
  12. I uploaded a new video of the redesigned stacker crane that is part of the Candy Warehouse: Some parts are still missing (in backorder), so some bricks are not in the right color (like the yellow liftarm in the base of the crane). Updated: Horizontal movement of the crane has been improved (much smoother now). Major change: motor is now inside the left tower. 'Stops' added to determine the horizontal location of the crane. Motor responsible for horizontal platform movement is now fixed to the top (you can see it at the top of the right tower) I will add some more detailed information about the improvements later this week. Enjoy, Hans Enjoy
  13. Another thing: the final version of the Warehouse will have two stacker cranes. One crane will be storing the candy containers arriving from the Automatic Candy Sorter, the other crane will retrieve container to send it to the delta crane. That means that every storage compartment needs to be accessed from two sides. I made a proof of concept to check if the container can be stored from one side and retrieved from the other side: And hooray, it works! In the next period, I will need to work on one stacker crane. When it is working, I will clone the crane and extend the warehouse. Enjoy, Hans
  14. Thanks, ColletArrow. And you were right, I found a way for the gear reduction. I also had to make a bit more room where the EV3 cable was connected. Enjoy, Hans