Wow youve already started! We are currently in the middle of building models still and then we have to think of a base, which takes us several weeks (we only meet twice a week) and then we start. The robot will probably be ready by October for us.
Hey, Mindstorms Man, really cool attachment you have made. I just had a question about the pneumatics part, though, because my FLL team is going to World Championships in Detroit in April, and we were wondering how to incorporate the pneumatics into an attachment. Our specific question: We understand that you should first pump air/pressure into the pressure tank until a certain point. Our question is, how does the robot flip the switch of that grey switch thing that controls the piston? How does that work? And what is the best way to do it? Because we were just thinking that we could flip the manhole with the pneumatics, but we could not find a way to make the robot flip the switch of the grey controller. Thanks, and again, awesome video.
ScientificCrisis - at 0:26, you can see the dark grey switch with an extended lever. Behind, powered by the two black bevel gears, is a flicker. The flicker is connected to the motor, and is geared for torque. To hit the lever to flip the switch to the left, the black flicker swings around the right, pushing the lever over. To flip the switch to the right, the flicker swings around the left hitting the lever the other way. There is nothing complex, just a spinning flicker hitting a lever back and forth.
Thank you, I tried that, but one problem I faced was that my spinning flicker is not able to hit the lever back and forth, the lever is really tough to turn. Is there anything I can do to fix it?
ScientificCrisis - ah. I had that problem as well. When you get the switches new, they come very very very very stiff. There are two things you can do: you can purchase a used switch which should be a lot smoother. Alternatively, you can build a mechanism that runs the switch back and forth all day to loosen them up. I did the second.
I actually found a problem with your flow mission. My team recently went to our competition and found out that the sticks that let the flow onto the other team side is pointed upward which means you have to push the levers quite a bit. Luckily we managed to figure out how to get the flow working :)
Akul Sharma - yep, I had the same problem. The way I fixed it was by adding a similar pushing attachment that pushed the other yellow lever as well. Good thing you figured it out in time!
Tiger Online - Lego pneumatics use air. In the beginning, I was pumping air into an air tank. As you can see, the air gauge was displaying the psi in the air tank. Later, the air can be used in the pneumatic piston. The air can push the piston out, or suck the piston back in. I used the piston to move the pump addition.
Frozty - I can try explaining. Pneumatics are powered by air. In Lego pneumatics, there are several parts. There is the pneumatic hand pump, which you can see me using at the beginning of the video. The air pumped by the hand pump is stored inside the white air tank, which is next to the hand pump. The main purpose of pneumatics is to activate a piston, which is the blue thing connected to the white beam that pushed the pump addition. The piston can extend out or retract in. To activate the piston, there is a pneumatic switch. The switch controls the air flow. In this mission, I use the motor to activate the switch to push the white beam arm out to push the pump addition into the other pump.
Milind Bordia - there are four main elements in Lego pneumatics. There in the pump, as you saw. I squeeze the pump handle to pump air into an air tank, where it is stored. You can also so see while I am pumping the air, the air gauge handle is moving up. The air gauge shows how much air is in the tank. To control the flow of the stored air, you use a switch. You can flip the switch in 3 different positions to control where the air goes. Finally, there is the pneumatic piston. To power this piston, you use the air you pumped into the tank. To make it move, you flip the switch to the correct position. You can probably get a better explanation by watching a tutorial video, if that was confusing.
Mindstorms Man - SWARM no not at all. That was a good explanation on how it works. Using a pump seems smart, although filling the pump up right before launch would take up some valuable time. Maybe that's why I haven't seen many till date
Milind Bordia - you can pump the air before the match starts, so it doesn't waste time. They are just expensive, and sometimes not the best solution anyway.
xXSANICXx - In the old attachment, all I use are slopes. I use a slope of approximately 45 degrees to push the pump addition into the correct position. I also use a 30 degree slope or so to push the yellow lever to release the water. Motors are valuable, and I am always looking for ways to save them to complete harder missions. However, I found that solution to be unreliable, so I decided to give up one motor to make it more consistent.
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Great idea!!!👍 I am shubham chaudhari participant in fll 2017 well plz upload your video after completimg the task
thanks! I will be uploading when I create new things or come up with new ideas!
Wow youve already started!
We are currently in the middle of building models still and then we have to think of a base, which takes us several weeks (we only meet twice a week) and then we start. The robot will probably be ready by October for us.
The Force 3862 - nice! I would suggest maybe meeting more often, two times a week is pretty little. Good luck!
Hey, Mindstorms Man, really cool attachment you have made. I just had a question about the pneumatics part, though, because my FLL team is going to World Championships in Detroit in April, and we were wondering how to incorporate the pneumatics into an attachment.
Our specific question:
We understand that you should first pump air/pressure into the pressure tank until a certain point. Our question is, how does the robot flip the switch of that grey switch thing that controls the piston? How does that work? And what is the best way to do it? Because we were just thinking that we could flip the manhole with the pneumatics, but we could not find a way to make the robot flip the switch of the grey controller.
Thanks, and again, awesome video.
ScientificCrisis - at 0:26, you can see the dark grey switch with an extended lever. Behind, powered by the two black bevel gears, is a flicker. The flicker is connected to the motor, and is geared for torque. To hit the lever to flip the switch to the left, the black flicker swings around the right, pushing the lever over. To flip the switch to the right, the flicker swings around the left hitting the lever the other way. There is nothing complex, just a spinning flicker hitting a lever back and forth.
Thank you, I tried that, but one problem I faced was that my spinning flicker is not able to hit the lever back and forth, the lever is really tough to turn. Is there anything I can do to fix it?
ScientificCrisis - ah. I had that problem as well. When you get the switches new, they come very very very very stiff. There are two things you can do: you can purchase a used switch which should be a lot smoother. Alternatively, you can build a mechanism that runs the switch back and forth all day to loosen them up. I did the second.
ScientificCrisis - I used the design from this video: ruclips.net/video/lElUhDS_kqg/видео.html
thanks, its working as of now (i'm running the switch torturer right now)
I actually found a problem with your flow mission. My team recently went to our competition and found out that the sticks that let the flow onto the other team side is pointed upward which means you have to push the levers quite a bit. Luckily we managed to figure out how to get the flow working :)
Akul Sharma - yep, I had the same problem. The way I fixed it was by adding a similar pushing attachment that pushed the other yellow lever as well. Good thing you figured it out in time!
One question, how is the temperature sensor being used?
There is no ev3 temperature sensor. Perhaps you mean the Lego pneumatics?
Yes, and what does that thing do?
Tiger Online - Lego pneumatics use air. In the beginning, I was pumping air into an air tank. As you can see, the air gauge was displaying the psi in the air tank. Later, the air can be used in the pneumatic piston. The air can push the piston out, or suck the piston back in. I used the piston to move the pump addition.
i can never understand how pheumatics work
Frozty - I can try explaining. Pneumatics are powered by air. In Lego pneumatics, there are several parts. There is the pneumatic hand pump, which you can see me using at the beginning of the video. The air pumped by the hand pump is stored inside the white air tank, which is next to the hand pump. The main purpose of pneumatics is to activate a piston, which is the blue thing connected to the white beam that pushed the pump addition. The piston can extend out or retract in. To activate the piston, there is a pneumatic switch. The switch controls the air flow. In this mission, I use the motor to activate the switch to push the white beam arm out to push the pump addition into the other pump.
Don’t worry, it was quite confusing for me until I bought the set.
I forgot to mention the pressure gauge. The pressure gauge simple measures the air (psi) in the tank.
Thanks!
How long did it take for you to build the whole contraption for that mission?
Ultimatanium i thing 30 munites
OyunCanavarı - it was built first in about an hour, however many changes were made over about a one month period
How many rack gear did you used?
Yong Run - 10
Very Nice, Do you know if there is a junk penalty this season?
Marley Telles - I don't think so, but I can't be sure.
Ok, Thanks!
HAL-9000 Robotics - wait . . . Are u the same person?
Mindstorms Man - SWARM Yes
Hey just curious how do the pumps exactly work? What do they do?
Milind Bordia - there are four main elements in Lego pneumatics. There in the pump, as you saw. I squeeze the pump handle to pump air into an air tank, where it is stored. You can also so see while I am pumping the air, the air gauge handle is moving up. The air gauge shows how much air is in the tank. To control the flow of the stored air, you use a switch. You can flip the switch in 3 different positions to control where the air goes. Finally, there is the pneumatic piston. To power this piston, you use the air you pumped into the tank. To make it move, you flip the switch to the correct position.
You can probably get a better explanation by watching a tutorial video, if that was confusing.
Mindstorms Man - SWARM no not at all. That was a good explanation on how it works. Using a pump seems smart, although filling the pump up right before launch would take up some valuable time. Maybe that's why I haven't seen many till date
Milind Bordia - you can pump the air before the match starts, so it doesn't waste time. They are just expensive, and sometimes not the best solution anyway.
nice idea~
Leon Liang - thanks!
do you have building instruction for this one
Mohammad jaradat - unfortunately no
You are not allowed to use pumps. It isn't lego mindstorm
xXSANICXx it doesn't need to be mindstorm it just has to be lego and not electronic
xXSANICXx - those are Lego Pneumatics, produced by Lego. They are not part of Lego power functions. They are allowed in FLL
Mindstorms Man - SWARM how do you build the old one
xXSANICXx - In the old attachment, all I use are slopes. I use a slope of approximately 45 degrees to push the pump addition into the correct position. I also use a 30 degree slope or so to push the yellow lever to release the water. Motors are valuable, and I am always looking for ways to save them to complete harder missions. However, I found that solution to be unreliable, so I decided to give up one motor to make it more consistent.
THEY CAN USE IN FLL
one idea, you can use the linear slide to push the pump in then, it extends out to do the rain mission.
Sam Duong - that's pretty smart! I didn't think of that. If my current method proves to be unreliable, I will try that.
good morning for everything I can say what the robpot is called
boi u cant touch the bot
Anthony Ma - this video is for demonstrative purposes. Here is the full run: ruclips.net/video/Lif6sY63CO0/видео.html