Monday, 11 March 2019

The Leg

A simple but useful mechanism with vibration damping.

The human leg, in the general meaning, is the entire lower limb of the human body, including the foot, thigh and even the hip or gluteal region. However, the definition in human anatomy refers only to the section of the lower limb extending from the knee to the ankle. Legs are used for standing, and all forms of locomotion including recreational such as dancing, and constitute a significant portion of a person's mass. 
                                                           Source: Wikipedia

Sunday, 22 July 2018

The Tri-drive mechanism

This mechanism in:
  1. horizontal orientation can be use as the tri-star wheel set. Rolling mode is used on a flat surface, acting as any normal wheeled vehicle.
    Climbing mode is useful, when encounters enough resistance to start climbing.
  2. vertical orientation can be use as base for whirligig toy, rotating around own axis.
This set has a concentric drive arrangement to provide separate power for both rolling and stepping modes of operation. In this set Technic Beam 1 x 5 Thin with Axle Holes on Ends is used. However manipulating with length of this Beam | Liftarm you can adjust the length of the arm. 



Sunday, 22 April 2018

Turntable Platform



In the post from April 3. I shared a simple program that can be used in many ways. Another is to use a platform to drive the rotation on which we can mount or put up various elements.



Saturday, 7 April 2018

The Book of Morse code


Morse code is a method of transmitting text information as a series of on-off tones, lights, or clicks that can be directly understood by a skilled listener or observer without special equipment. It is named for Samuel F. B. Morse, an inventor of the telegraph.
Source: Wikipedia

Tuesday, 3 April 2018

The Morse code


Impressed by tilted twister robots by Hans Andersson. I decide to work on my own project. The main goal was to make it easy to translate dots and lines into a simple mechanism that any LeJOS fan can build.

All that this person should do is upload using the EV3 Control Center a properly named file with specific states for the selected engine:

statetwister_motor_[a..d].txt


This uploaded file(s) should be have, plain text content with one number in each line. First line is dedicated to set interval of motor rotation. Second line and next lines is for set zero /0/ or one /1/ to change motor state.




Sunday, 4 June 2017

The Vise

A vise (American English) or vice (British English) is a mechanical apparatus used to secure an object to allow work to be performed on it. Vises have two parallel jaws, one fixed and the other movable, threaded in and out by a screw and lever.
 Source: Wikipedia


Monday, 22 May 2017

Conveyor belt with gantry


You can use this model with my rail trolley. But for better interaction with touch sensor you should add bumper between frame and black axle.
For this purpose, I created instruction, you can see on the right. For bigger version -- click on it.

Remember that motor connected to Port A support the direction of movement of the conveyor belt.

Changing the direction of the motor connected to port B is forced alternately by activating the touch sensor.

EV3 Brick assigned ports:
  :: Port 1 for ultrasonic sensor
  :: Port 2 for touch sensor
  :: Port 3 for touch sensor
  :: Port A for medium motor
  :: Port B for medium motor