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About camellia

  • Birthday June 15

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  1. camellia

    [MOC] Motorcycle with Sidecar

    Thanks for getting your message. You are right. It is based on Creator. I also put a chip into it. It has functions for Internet of Things. I can drive it from a mobile phone via Wi-Fi or 4G. Thanks for your suggestions.
  2. Sidecars are a great way to enjoy a motorcycle. One can carry items safer than they could be compared to being on two wheels. + Steering + Differential and Locking + 2 Cylinders Engine + LED Light Camellia Café presents a particular designed Motorcycle with Sidecar model being controlled by Mini controller. One steering servo motor is used to steer. One DC motor is used to as power. Wi-Fi technology is used to control this model via the local wireless network. MQTT technology is used to control this model via a wide wireless network, then, you and your children could manipulate this model anywhere with iOS, Android or Windows Devices. Mini - Motorcycle Sidecar en.pdf Just in Camellia Café
  3. camellia

    [MOC] Beemo with Touchscreen HMI

    Haha, thank you so much! Please watch my video on Youtube. I want to make a still Droid with a touchscreen. He could control LEGO motors with a display screen. It is original from BOM(Beemo) in comics Adventure Time.
  4. Please kindly watch on YouTube! A touchscreen is one of Human-Machine Interface. It is an input device and normally layered on the top of an electronic visual display of an information processing system. A user can give input or control the information processing system through simple or multi-touch gestures by touching the screen with a special stylus or one or more fingers. The touchscreen enables the user to interact directly with what is displayed, rather than using a mouse, keyboard, or other such.
  5. Please kindly watch this video:
  6. 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 !
  7. Delta Robot is one of Parallel Robot: Parallel robot uses several serial chains to support a single platform, or end-effector. The end effector (hand) of this linkage (arm) is directly connected to its base by a number of separate and independent linkages working simultaneously. A Parallel robot arm is designed so that each chain is usually short, simple and can thus be rigid against unwanted movement. The off-axis flexibility of a joint is also constrained by the effect of the other chains. Errors in one chain's positioning are averaged in conjunction with the others. A further advantage of the Parallel robot arm is that the heavy actuators may often be centrally mounted on a single base platform. This reduction in mass along the arm permits a lighter arm construction, thus lighter actuators and faster movements. This centralisation of mass also reduces the robot's overall moment of inertia. A drawback of Parallel robot arm is their limited work space. Another drawback of Parallel robot arm is their nonlinear behavior: the command which is needed for getting a linear or a circular movement of the end-effector depends dramatically on the location in the work space and does not vary linearly during the movement.
  8. 6 Axes Robotic Arm is a Serial Robot Arm. Serial robot arm is designed as a series of links connected by motor-actuated joints that extend from a base to an end-effector. It has a large workspace with respect to the size of the robot and the floor space it occupies. However, as Serial robot arm is an open kinematic structure, it has the low stiffness. And its errors are accumulated and amplified from link to link. It also needs a perfect counterbalance design to carry and move the large weight of most of the actuators. 1. Yellow: this servo motor is the first axes. It rotates from -180 degree to +180 degree in the horizonal plane. 2. Green: this motor is the second axes. It rotates from -45 degree to +30 degree in the vertical plane to make the robot arm move forward or backward. 3. Blue: this motor is the third axes. It rotates from -15 degree to +30 degree in the vertical plane to make the robot arm move upward or downward. 4. Red: this servo motor is the fourth axes. It rotates from 0 degree to 360 degree to make the robot arm spin. 5. Orange: this servo motor is the fifth axes. It rotates from -90 degree to +90 degree in the vertical plane to swing the robot wrist. 6. Purple: this servo motor is the sixth axes. It rotates from 0 degree to 360 degree to make the robot wrist spin. Counterbalance There are four ways of counterbalance: 1) Counterweight, 2) Springs, 3) Balanced links and 4) Pneumatic cylinder. A gyroscope can be used to sense the tile of the robot or droid, the controller then predict trends of unbalance, and adjust counterbalance system. ARM Controller Camellia Café ARM Controller controls 8 Servo Motors or DC Motors. Just enjoy it! Camellia Café
  9. A Differential Locking is designed to overcome the chief limitation of a standard open differential by essentially "locking" both wheels on an axle together as if on a common shaft. This forces both wheels to turn in unison, regardless of the traction available to either wheel individually. My Video: before 6'50" is talking about knowledge in animation, after 6'50" is model show. Front Differential Locking Rear Differential Locking Central Differential Locking Full-Time AWD systems drive both front and rear axles at all times via a center (inter-axle) differential. The torque split of that differential may be fixed or variable depending on the type of center differential. This system can be used on any surface at any speed. Part-Time AWD systems require driver intervention to couple and decouple the secondary axle from the primarily driven axle and these systems do not have a center differential. On-Demand AWD systems drive the secondary axle via an active or passive coupling device or "by an independently powered drive system". The standard notes that in some cases the secondary drive system may also provide the primary vehicle propulsion. On-demand systems function primarily with only one powered axle until torque is required by the second axle. At that point either a passive or active coupling sends torque to the secondary axle.
  10. camellia

    [MOC] Camellia Café

    Welcome to Camellia Café !
  11. camellia

    [MOC] Motor-brain Droid Brothers

    You are right. They runs slowly due to the large gear ration. Besides, if 9V power is used, they are quicker and stronger. To change length of crankshaft and link rods, a little higher speed may also be gotten.
  12. camellia

    [MOC] Motor-brain Droid Brothers

    Thank you! If no wheel, it looks like more as a human. It will be bipedal. With wheels, the friction is low.
  13. Motor-brain Droid Brothers are: Xtra Large Motor - the eldest brother Large Motor - the second brother Medium Motor - the youngest brother Simple, but Ingenious. Ugly, but Close. A worm drive is a gear arrangement in which a worm (screw) meshes with a worm gear (aspur gear). A worm drive can reduce rotational speed or transmithigher torque. One of the major advantages of worm gear drive units are that they can transfer motion in 90 degrees. The gear ratio is: 1 to teeth of the worm wheel The direction of transmission is not reversible due to the greater friction involved between the worm and worm-wheel. Worm gear configurations in which the gear cannot drive the worm are called self-locking. The eldest brother - Xtra Large Motor-brain The second brother - Large Motor-brain The youngest brother - Medium Large Motor-brain Power - Battery and its tray, Worm Hand and Tummy - Worm gear Feet - Each foot has 4 wheels Back - Antenna and pigtail Profile - Crankshaft and Link Mechanism drive Arms and Legs Three brothers - Red, Blue and Yellow Welcome to Camellia Café
  14. camellia

    [MOC] Camellia Servo Strandbeest

    The legs motion is real. I recorded its motion with video recorder.
  15. camellia

    [MOC] Camellia Servo Strandbeest

    The hardware controller is designed by myself. And programs are coded by myself with C. It can be controlled by WiFi with Visual Studio and mobile Bluetooth with Java.