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Found 22 results

  1. Camellia Café MCU (Micro Control Unit) gives children or students initial knowledge of Electronics. In Camellia Café MCU Laboratory, you will get basic knowledge of Electronics, Mechanisms and Software programming. Servo motor is widely used as an actuator of autonomous cars, robots and droids. A Servo Motor is a self-close loop. But only have a high performance motor is not enough. The motor-driven chips, encoder and algorithm play important roles. All keep servo motor with high accuracy in speed / torque, degree / position, time period feedback control. With Wifi Bluetooth/BLE and Cellular, it will be feasible to manipulate them from PCs, Pads and phones. What’s more, this make it easy to connect to Internet and Cloud Database. Mechanism is the body of Autonomous Cars, Robots and Droids. It is the mechanism that fulfills the movement. Gear, Belt or Chain and Linkage are three major transmission mechanisms. This is a simple gear transmission. Due to different teeth of these gears, the speed is reduced with torque increased. Chain or belt is another type movement transmission. It could transmit movement in a long distance. Worm gear is a special gear. It can only transmit from worm to spur. The reverse is infeasible. Linkage is a third type of movement transmission. Crosshead is another key element. However, we are familiar with numbers and letters. Only with Binary, it is hard for a robot to communication with us. It is the ASCII code that instructs a robot to recognize or display letters. Program, or called Code, is the body of the algorithm. It is the program and code that instruct Autonomous Cars, Robots and Droids to perform their action. No matter Assembly Language, or Objective Oriented / Procedure Oriented Language; no matter C, C++, Basic, Java, or Visual C++, C#, even Swift, Python… Don’t worry about so many types of platforms and codes. If you master one of them, you will be familiar with others. When working, you only need to decide which code language is asked as the hardware / platform requires and as your preference, even new type code is coming, after learning in a very short time, you will get that new and get done with your program. Different hardware and different platforms support different code languages. Some hardware such as the controller MCU in Camellia Café Model uses language which is very close to C. Windows support a lot of languages, C, C++, C# and Visual C++ are fittest. Visual Studio is their develop tool. Android (based on Linux) phones and pads use Java. And the develop tool is Android Studio. iOS or Mac OS (based on Unix) which is in your iPhones, iPads or Macs use Objective-C or Swift. Their develop tool is Xcode. Welcome to Camellia Café !
  2. Howdy folks. Like many of you I'm sure, I'm taking the time to do a bit of building in the time off between Christmas and New Year. I've come across this little design that I haven't seen before, and thought I'd share in case someone finds it useful. If you would normally be using one of those white 24-tooth clutch gears (that slip after a certain torque is reached) but the torque limit for that gear is too high, or you can't fit the spur gear easily in your drivetrain, you may find this construction useful: Now, I accept that in practice it could be trick to work this into a MOC - the gear can only be supported one one side (unless you put a pin-joiner on the end and extend the axle from that) and a stud away from the support at that. But these aren't insurmountable, and if it's all you have, then you'll make do! On the other hand, it's also useful if you want to _add_ friction to a drivetrain for whatever reason. An alternative to sticking a normal gear on a friction pin. Owen.
  3. Hey everyone! I'm gonna start doing Roblox Gear packs in LDD! They're basically players with gears. Gear Pack 1 includes Jetpack and Stravant's Lightning! If you would like to use them, please credit me first. Comment what 2 gears I should build next! Oops! Here's the file! http://www.mediafire.com/file/bk0tcceu2un0dbk/RobloxGearPack1.lxf Here's the Google Plus post + Image!
  4. I'm just starting out with Lego Digital Designer and have run into a problem putting two gears together. In this LDD file (https://www.dropbox.com/s/d8i55l6dzzdupwl/GearTest.lxf?dl=0) I want to put the bevel gear on the grey beam so that it meshes with the other bevel gear, so it looks something like the image below.. But it won't let me do it, perhaps because one gear needs to be rotated. Any idea how this can be achieved?
  5. I am designing a crank system for my 3D printed music box to turn the music cylinder. Since the music box cylinder is large about 30 cm diameter, the effects of backlash of only a degree or two is magnified. How can I use lego gears to design a crank that increases torque and decreases speed with practically zero backlash? I know I may receive some flack for this, but I am fine with a solution that requires some glue or 3D printed parts or springs, but I would prefer if it was all Technic. Thanks!!!
  6. I said before in my previous post that I had some problems with my GX EV3 4x4 chassis that I needed to fix. Once again, it's more gear grinding/clicking, but this time it's only in the front and rear differential gears. The grinding occurs whenever the chassis tries to drive into a wall or when it tries to drive in different conditions (because as an SUV it should drive smoothly in dirt or uneven terrain). What also annoys me is that when I push the car, instead of letting the motors move, the differentials make clicking noises that, like I said before, sound like a machine gun. I really need help so I can stop the differentials from clicking so when the car tries to drive into the walls, the motors won't still move while the differentials click, and so the car can be a lot more versatile on uneven terrain (such as what I used for testing, blankets) without the differentials causing a problem when the car moves. Here's some pictures of the bottom of the chassis.
  7. I'm back again with another gear grinding issue but this one is a bit less critical. The grinding only occurs when my 4x4 SUV chassis (with Sariel's 4-Speed Sequential Transmission) is in a certain gear. Here's some photos of the chassis. The transmission is shifted to the speed where the nonstop grinding occurs. When in this gear (I believe it may be 3rd) The car is supposed to move, but it does very slowly while clicking noises fire like a machine gun. This is the only time when the gears grind other than, say, if the chassis hits a wall. When the clicking begins, I hear the driving rings shake (which awfully reminds me of the somewhat gear clicking in the Mercedes-Benz Arocs set). I would love a response a soon as possible to address the clicking problem so I can finish the chassis once and for all.
  8. This is my second post on the EuroBricks community and another question asking for as much help as I can get to master the art of the technic gearbox. Like I said in my previous post, for my Lexus GX EV3 4x4 SUV, I tried my best to use Sariel's 4-speed sequential and it ultimately failed on me. Quoting one of my replies... I would be relieved if I could finally finish this creation after five months of difficulty. Here are some pictures of the entire chassis. I said before that the issues with this was that the gears clicked a ridiculous amount at the highest gears which stopped the car from moving. (Hence the reason why the transmission I want needs to have a clutch gear to absorb the large amount of torque)
  9. I'm building a SUV drivetrain for my Lexus GX EV3 project that has independent suspension, four-wheel-drive, and a four-speed gearbox with a medium EV3 motor that shifts the gears. Unfortunately, after testing the drivetrain, I found that when in 3rd or 4th gear, the gears make a clicking noise when moving forward and then straight to backward. However, this clicking somewhat occurs less when going from reverse to forward. This clicking really "grinds my gears" and I don't know what to do to stop the gears from clicking. My gearbox is a custom version of Sariel's four-speed sequential that is fit for the vehicle I am building. The input in the transmission is switched to provide more speed. Two large EV3 motors drive the input. I've noticed that when the vehicle stops, it goes the opposite direction for a little bit. Also, like I already said, this clicking only happens in 3rd or 4th gear, but mostly the 4th gear since it brings the most speed. I tried to solve this clicking with different gears and whatnot, but no matter what they still clicked when the vehicle moved forward to backward. The motors and the gearing also bring a lot of torque as much as it brings speed, and this might be one of the problems. Is there any way I can solve this issue so the gear clicking will stop in this situation (moving foward and then straight to backward) for now on? Here's a photo of the bottom of the drivetrain. Thank you in advance for any assistance that you may be able to provide!
  10. while trying to learn the program, i found out that it was impossible to connect the gears and to make them work together but at some point, i managed to make the gears interact with each other and work together. the problem is that i'm unable to find out how. can someone explain this to me please? here is the ldd file https://ufile.io/274561
  11. This is my new moc, base on a character in a video game I've just finished the campaign and still so hype about it ....maybe you know ! First ,take a look at his Video ! And this how he look like ! WP_20160117_22_46_49_Pro by demon demon demon, trên Flickr WP_20160117_22_47_22_Pro by demon demon demon, trên Flickr WP_20160117_22_47_35_Pro by demon demon demon, trên Flickr WP_20160117_22_48_58_Pro by demon demon demon, trên Flickr And with 2 psyonic-blades WP_20160117_23_04_09_Pro by demon demon demon, trên Flickr WP_20160117_23_02_17_Pro by demon demon demon, trên Flickr And some more poses WP_20160117_23_00_23_Pro by demon demon demon, trên Flickr WP_20160117_22_53_40_Pro by demon demon demon, trên Flickr WP_20160117_22_52_16_Pro by demon demon demon, trên Flickr Thanks for visiting !
  12. How to Motorize the Mars Rover I am looking for some suggestions. My daughter is building the Mars Rover set (go here for the details: http://www.eurobricks.com/forum/index.php?showtopic=98222) for a presentation at school and I told her I would help make it operate by remote control with one of the power function kits. Problem is that it is a lot more complex than I thought. (I have no experience at the expert level building. (No building the rover is not part of the project, she is doing it as an additional part of her presentation on Rovers). I think I can maybe get it moving with a remote, receiver and simple motor attached to one wheel, but I do not have any idea how to do the steering and don’t know how to move any of the other functions (camera, antenna, robotic arm). see So, to steer, I use a servo? How do I operate the other things, more servos? And to move things slowly, do I need complex gearing? (I was looking at the SBrick which might work. I saw a few designed steering racks and chassis on Ebay, some simple, some pretty complex. Would I be better off buying another set that has a chassis and steering and drive designed to work with motors and then build it and adapt the Rover to it? Any suggestions to help me figure out what I need to do and what to buy to easily make this work would be much appreciated. Thanks!
  13. This custom creation was created with a variety of old and new Technic pieces for a different effect to the final build. Designed by an actual Porsche mechanic and myself. Original: Rework: FInal version:
  14. Hi I am not sure if this has been done before in MOC's but was wondering if there are any MOC, or official set examples of having gears meshed on different planes. This generally applies to bevel/crown/worm gears, maybe gear knobs. Here is an example of what I mean, the offset is an entire 1L, however a 0.5L offset works better with smaller bevel gears. It reduces space significantly. I was also wondering if offsetting one of the gears effects the speed and/or torque. This idea works with the 3L wide differential too!. Regards. Snipe
  15. Hi All I've been working on an rc van using a Raspberry Pi as the control and have decided to incorporate a technic motor for drive and would like to ask for some help and advice. I want to build a simple gearbox/drive in a compact design, but wasn't sure what gearing/design to use? I have forward and reverse control through the Pi/Scratch and it maybe easier to keep it as simple and reliable as pissible, any help/advice appreciated. You can see my project here http://raspivan.weeb.../rasppivan.html
  16. Hi I am working on gear pairs meshed directly together, in a 2 by 2 arrangement. Two gears on each of the two axles - However one gear is an idler gear which is driven by the other gears instead of with the same rotation speed as the motor. However I'm not sure if the ratio for the idler gear will be 1:1 since there is two 16 tooth gear gears in either example I don't think it is 1:1 though it should be what the other two gears are, so say 3:1 or 1.6:1 but I'm unsure as it's hard to tell. The yellow axle joiner goes to the motor, I'm using a differential to replicate a single 24 tooth idler in the first image. Obviously the dark grey gears are the idlers. Any ideas what it could be. More gears can be used with studed beams and plates such as 16 tooth +12 tooth or 20 + 20 or 16 + 20 etc. Regards, S
  17. I managed to break two 12t single-bevel gears in 3L differentials before concluding that trying to use them with an ungeared XL motor really was a bad idea. My question is, how much torque can those gears take (in the 3L differential) before breaking? It's clearly somewhat less than the maximum torque produced by the XL motor, since my gears broke when I was powering the motor with the 7V rechargeable battery and the dial on the battery was (I think) turned to just below the maximum setting. Will two L motors break the bevel gears? Both the official stats and Philo's site show the L motors as having just under half the torque of the XL (though they list different absolute values). On a related note, will the gears survive more torque in an old-style 4L differential when two half-bushes and a fourth bevel gear are added to reinforce them? Thanks!
  18. Hello all, I have never posted on in the Technic area but I need some advice from an expert. I am looking to create a compact way using gears of slowing down a PF Motor speed that will be connected a door. I want to create a motorized door for a Star Wars base. I am going to use a standard Power Functions motor and the 1x4 Tooth Plate for the door similar to the doors of 7666. I need a way of slowing down the speed from the motor as the last time I attempted this the door jammed every time. I hope you understand what I mean. I can give pictures if needed. Thanks.
  19. The Ghost Racer

    Metal Gears

    I have a small question to ask yourself: do you know sites that sell lego technic metal gears? I've had enough need since my Tatra truck has already broken two in half .. the problem is that I do not notice when they break because it happens suddenly. I realize after several minutes that lacks a gear since my truck is powerful enough to continue to advance with little difficulty. I hope that has not already been made ​​any discussion of this topic.
  20. Hi, I am making a six speed gearbox but I am having significant trouble in enabling the gear lever to slide out of the drive selector clutch and into the clutch beside it. This is fine if the drive selector is set to the middle setting as it lines up with the clutch for the gearbox but if it isnt then it wont be able to without moving back down to the middle position and changing clutches. Any ideas?
  21. nxtstep101

    Custom Clutch Gear

    I was recently playing around with gears, and geartrains and came up with a simple yet effective way to make a custom clutch gear: I was really pleased with its effectiveness, and simplicity. Note: The more you gear it down, the harder it is to stop it. Enjoy!
  22. Greetings gang, I have decided to post a modification that I have made to my Emerald Night Locomotive that may help others. The problem I was having was with the PF XL motor and rigid train frame the EN would get stuck on dips and rises throught the track surface. This was primarily an issue going over switches or minor grades changes. So my initial plan was to remove the XL motor and build a passenger car that was equipped with motors to push the engine. I changed my mind on this one and challenged myself to incorporate the XL motor in the engine and then an additional motor in the tender along with the battery. So after the assistance of fellow enthusiast on this site and the Railbricks magazine, I created a boogie/truck to mount on the tender with minor modifications to the original tender design. Keep in mind this is still a work in progress but what I have completed thus far has made a huge difference and resolved alot of traction issues with this particular locomotive. Pictures are below feel free to copy and I am always looking for additional feedback to better a design :-) http://flic.kr/p/e7AJX7 Check out my Flickr page for more pics. I also added the modification to the front rod which fixed the locking up issue and smoothed out the engines driveline. As you can see I only geared one axle on the boogie, this is due to me running out of gears and not having enough to gear the other axle. I have ordered the additional parts from bricklink and will update accordingly. I have tested this design and even with only the one axle powered it helps a whole lot. Does anyone have advice for adding weight to the tender or even the engine to further improve the traction?