Mr Jos

Thanks! That was my initial idea to make all my machines work together, having the 6DoF supply an empty pallet, and then make it fill up with 1 sort of the sorted pins (and remember the amount in the pallet ofcourse). I'm still thinking on how to do this, I do have an idea (from real life machines I install/perform maintenance on). It's a second hand clothing sorting, each kind of fabric/gender is thrown in a bin, then at given times the flap under the bin open up, and the items fall on the belt underneath, that transports it all to the next station. Then another kind gets dropped on the belt. So that uses only 1 conveyor for transporting the sorted items to the pallets, but the problem is the flaps. I would need a motor for each kind of pin. So I need to find a way to make that better, perhaps with a slider or something that can select between 10 flaps, and open and close them 1by1. And then indeed find more EV3 bricks. At this moment 3 in use for the warehouse, 2 in 6DoF, 1 in this bridge sorter, and 1 (without rechargeable battery) is in my swingarm sorter. That last one I can breakdown if needed or just use the brick, and try to make this transporting system. Or if anyone has some cheap EV3 material leftover they do not use, I might buy/take it over :D

I used before daisy chaining in the official EV3-G programming, but I did not like it. You can not use sensors from the slave brick, and it does not work reliable. EV3 classroom I never used. I changed to using MicroPython (PyBricks). This does require a minimal 4GB - Maximal!! 32GB micro SD card for each brick, and you will need to program with MicroPython, depending on your understanding of coding and how good you can learn from reading it might be good for you. I did not know MicroPython at all, but I self learned from reading all info on this site; https://pybricks.com/ev3-micropython/startinstall.html It allows a very good and fast bluetooth master-slave connection between bricks. My warehouse has 5 EV3 bricks connected together by bluetooth and you can program really complex (or simple) machines with it.

And another update (don't know if it gets viewed); I added an automatic feeder, a slightly updated version from my drum feeder. Made the scanning belt longer and higher in the air. Pins can be dropped from high or low (as in the video). High works fine and faster, but this looks more nice. Now I'm searching extra items to teach it to sort (after the video was made), for now it knows 2L red axles, 3L+Stud dark tan, 3L Reddish-Brown with stop, 3L white axle connector for clutches. Longer than 3L does not work with this gripper. The gripper has free PDF instructions on Rebrickable. LEGO MOC 3 armed gripper by Mr_Jos | Rebrickable - Build with LEGO

Can you still put the 12T gear on it before that pin? And I don't see how you can put a strong drive gear on that construction.

Woah that looks very interesting to see how the distance sensor really reacts to a movement. Seems to jump shortly backwards before overshooting. All the rest looks like Chinese for me (even though I worked in China over 6months). Very curious to see what you will be able to make with this coöperation between 2 nice systems.

All EV3 motors have a protection build inside, and you can also detect stall in your program. You can always push around any weight, you just need to find the correct gearing (slow it down enough so it still moves smooth). I always try to find the fastest gearing that still works fine. The big turntable I designed uses round pieces inbetween the banana gears, that makes it rolling very easily, even with a high/out of center load. Accurate on low speeds (6DoF) and able to rotate at high speed (Sorter). Just take a look at some example video's on my YT page. Will you program your robot with MicroPython? And did you already think/test on how to connect the 2-3 EV3 bricks to work together? And about the topic movement, it's better here in the Technic part, as it's 100x more viewed than the Mindstorms sub. So you will get more answers here as it's a mechanical question. The kind of motor that will drive it is for later.

Exactly, what I like aswell. Creating industrial machines that in real would produce anything we can find in shops. That would be an awesome theme. Making a manipulating machine that does something with a 'product'. And it would show that much more can be done with Technic then just anything that has wheels or tracks and drive round and round.

I adjusted my big turntable, to make it even stronger, my computer is cooking at the moment so it'll just be this screenshot, but it already gives an idea. I added a 60T turntable inside the banana gears that take care of the smooth turning. It's a simple adjustment to the turntable design I use in my 6DoF/Pin Sorter.

- The new topic can be made by pressing the red button "Start new topic" (if you go outside this topic, in the mindstorms subforum you will see it). You will be asked to give it a name (choose something usefull about your subject/question). And then put your text. - When quoting you can go inside the quote and remove/add parts like I did with your quote, as Jim said best to remove photos if they are within the last 20 posts, people will be able to see them there if needed, and not make scrolling/data use to big. You can also change your previous posts by clicking the blue "Edit" button at the right bottom corner of your posts, and then remove/add something if you did forget it. - I and many others here on Eurobricks will help you if you ask good questions, with that I mean, show what you already have, tell what you want to do/make. I myselve like to make complex machinery, and some of them I offer instructions for on Rebrickable (for small fees), as they are complex machines with programs that take many hours to make/test. https://rebrickable.com/users/Mr_Jos/mocs/ Here you can see all MOC's (My Own Creations) I have instructions available for. Many other people make these PDF or photo instructions and post them on this site aswell. Some are free, some ask money. You can look around on that site and search for things you might want to get inspiration from, there are near 100'000 instructions already. - The turntable is in 2 of the MOC's in the link I posted above, but if you need a really sturdy one you might want to add a 60T turntable extra inside the big yellow gears and connect them on both sides. That will make a very strong turntable that is also stable and allows smooth rotation. The yellow gears alone already hold firm with my design and roll smooth as it uses a kind of bearing (can be seen in step 7 in the photo above). - The gear parts are 8x these you will need, along with the other parts inside offcourse (they are available in yellow or black only); https://www.bricklink.com/v2/catalog/catalogitem.page?P=24121#T=S&C=3&O={"color":3,"iconly":0}

Yep, I just made 2 screenshots from my 6DoF PDF instruction; Here it's on a high baseframe as I wanted my robot to stand higher, but it's possible to make it really low profile. I do that in my pin sorter. Hoping to see from both of you some content soon, as it's pretty dead here in the Mindstorms forum (I actually sometimes think to just post my builds in Technic subforum to get more views/reactions). @Jim If you want more info for the turntable I can send you the PDF from the sorter or 6DoF, anything to get someone back in robot building :D

I think you should be able to use a 60Tooth turntable to put the gun mechanism on. Then you will need to put 4times a 12T gear around it to turn it around, and remove backlash. In this video (I tried to start the video where you can see 4x 12T gears around the 60T) you can see that it can move without backlash, even with a huge weight on it. If you need a bigger turntable, the one underneath with banana gears (yellow and black) might be an option. It rotates freely but does not break, even when a big load is on 1 side or even outside of the gear.

Could you upload some photos to a site like Flickr and then post them here, so we can see what you're building and how to give advice? If you mean a turntable that you want to make stable, I have a pretty good one build in my 6DoF robot, I use it in my sorter with swinging arm aswell.

That's running really nice! It runs better now without the airtanks, maybe it would run better with the airtanks if you first let them fill up to 2-3bar and then open up, but I still think it'll run better without, just direct on the pumps. This is a project I really like to follow as it includes nice mechanics/pneumatics and it's not a car.

Nice model and the functions you were able to put in. Now need to construct a safety harness and give him some training, and tell not to use tywraps to keep the door open. Only thing I haven't seen on any scissor lift yet, is the flaps on the bottom going down/up when lifting/lowering. Would be great if that could be build in aswell.

You should put max 4 Lego air pumps (6L or 5.5L) together on 1 XL motor. Don't try to put more, certainly not 10. The motor will not be able to handle it and just pump slow. Better to make 2x V4 air compressor with each a motor. That should give a good amount of air. And be sure all components are leak free. If you have a medium piston, take it in your hand extended, hold down the bottom plug with your finger and push in the cylinder. It should go back out automatically. Do the same with pulling it out, it should go back in strongly. If not then there's a leak. The pumps also tend to leak fast if not perfectly aligned, easyest is having a Lego manometer to see the pressure (and dropping), that's why I have 3 of them and 2 white tanks for smoother operation. It makes it way easyer to find flaws in pneumatic MOC's.

And now it sorts more kind of pins, and a longer conveyor to pick up from.

As it was requested by a teacher on facebook, I made (free) instructions for this simple but effective gripper. LEGO MOC 3 armed gripper by Mr_Jos | Rebrickable - Build with LEGO Still adding some pin data to sort as many as possible pins.

Added upgrades: - A PF motor driven belt to feed pins and scan them on color/length as there are no more motor slots left on 1 EV3 brick to make this 3D+gripper gantry. This means that the belt will not stop. As solution the gantry picks the pin on the fly. It drives aprox at the same speed as the belt and then lowers the gripper and takes the pin. - A energy chain that allows the programming- and charging cable + color sensor wire to move along with the robot. Future updates: - If pins come to fast after another/ the previous pin had to be dropped far away, the pickup belt will need to become longer so it will be able to get the pin later and not always at this sweetspot. Then the belt will be able to run with higher speed/sorting speed. - Putting more time in Pin detection data (now only 1minute was spend). - Try to sort as many pins as possible with just this one color sensor. - Have dedicated bins for each pin. (And if more EV3/PU bricks would be added; a system to empty these bins on a single large belt 1 by 1 to transport them to a pallet in the logistic warehouse. One can only dream)

Ah this is because of Ukraine 'intervention'? (as you're located in Belarus/Russia side)

I added 4 wheels to my 2D gantry to make it able to cover a larger area, after some testing I came to this current design (where wheels don't go flying within 30seconds). --- Video got removed --- As the first 2 axis moved fast already, I wanted the driving to be fast aswell, and I think it works great. All movements work pretty accurate as every startup all motors are being homed. Only problem now is that this EV3 brick has no motor slots left to power a conveyor for feeding pins to be sorted, so there's again a reason to get 1more (if I see one cheap somewhere). This video is just when testing maximal speed with 3600°/second acceleration, but I will tune it down to prevent it from pulling wheelies like in this video. EDIT:

I mean that the orange turn signals are not working when you made turns. Just like most of the real models, they don't work when going left or right.

Looks so real, even added the disfunctional turn signals!

I'm very interested in the part that shows a Bluetooth connection from the 51515 hub to a windows PC, and able to show some stuff on screen then. What I'm wanting for a very long time already is to build a realistic HMI (Human-Machine-Interface) for my Logistics center/other Lego machines. Now I need to do that on the small EV3 screen, but I would love to be able to build a great visual on a large screen that shows the status of the installation (and if it could have feedback/work together with the keyboard that would be even more awesome). But I'm just self taught with programming MicroPython, and I don't know anything technical from the connections etc. Just knowing if it would be possible to do what I want would be great allready. Normally end of this month going to my first event (in Torhout Belgium), would be great to show a HMI on a large screen, and have photo's/video's from real installations next to it to see the similarities, and how technical installations in the industry work.

Finally came up with a solution that is good enough for me, for now. I eliminated the green start button, and added 2 ultrasonic sensors for touchless operation in manual mode. 1 is to take a random pallet from the racks to the robot arm. The second one is to return a random pallet (if there is one) on the floor near the robot arm. The emergency stop button is still small and red + it has the yellow surrounding ring. Plain blue button to reset the installation. I also will be able to expand the installation a bit more, as I was able to find a real good deal last week, and have been sorting it all out. EV3 set with rechargeable bat+charger, loads of pneumatic stuff (2manometers, 2white airtanks which were hard to get for me), baseplates, power functions (even 2 servos still in sealed bag), good amount of gears/axles/liftarms. All this for just 150€, no brainer to take it. Still thinking if I will add the pin sorter or 3axis gantry+gripper.

Looks great! It's drawing nice curved lines.