За преподавателя: Имената на частите и речникът на децата
Преподавателят трябва да се старае да обогатява речника на учениците си при всеки удобен случай.
- #346
- 26 Jan 2017
Преподавателят трябва да се старае да обогатява речника на учениците си при всеки удобен случай.
Use any blocks that you wish to solve the following task.
Implement a program for stopping at a black line with the blocks containing the implementation details for the InitArray, Calibration and Getting the calibrated result.
Here is the task for adding a beam on both sides of every gear wheel in your attachment.
Once you start turning how to do you a whole 180 degrees turn. The robot almost does it, but not completely
In the video we reach a conclusion. We have energy accumulated and to keep the system turning we need about 1J of energy each second to keep it turning.
Experiment with changing the orientation and direction of gear wheels. Here are part of the tasks that you should complete before moving forward with the course.
The energy accumulated in the construction is about 2-3 Joules. In this first video we ask the question "How can we keep the energy in the system". How many Joules of energy should we input from the motor in order to keep the energy in the system.
Съвети и често срещани грешки, когато трябва да свържете две греди.
Какво трябва да знае всеки преподавател, когато дава задачи на ученици.
We got the speed of rotations of the motor in Radians per second. Let's calculate the value for the speed of the whole system. We calculate that the wheels are rotating with 375 radians per second. Which is impressive and quite fast for this system. From this speed, knowing the inertia mass we can calculate how much energy is the system accumulating.
So far we know how to make a turn in an arc, just like the real cars do.
Today we will see what other options our robots have for turning.
Бележки за построяването на Петминутен робот.
Най-добрият начин да пускате програмите си е от менюто с проекти и сега ще разгледаме това меню подробно.
There is no block for programming the Ultrasonic Sensor in the retail version of the LEGO Mindstorms EV3 software. In this video tutorial we will show you how you can download & import such blocks in order to use the sensor.
Following the Advance Light/Color sensors calibration for a minimum value for a single sensor tutorial, in this one, we continue with finding the maximum value detected by a sensor and storing this value in an array.
We calculate the number of rotatios when a gear system is involved. The driving wheel will have to do a number of rotations for the driven wheel to rotate to a desired number of degrees. In our specific case when the driven gear wheel is rotate to about 90 degrees the legs will lift the robot.
Construct two legs for both sides of the robot. The task for this video is to attach this two legs on both sides and to build a system of gears and axles that power those legs.
We dispay the speed of rotation of the wheels on the brick screen. We use the math blocks to do a proper calculations from rotation to radians per second. Knowing the speed, the radiuses and the mass of the wheels we find energy in Joules accumulated in the construction.
Ще научим как да свързваме и да откачваме LEGO кабелите и в кои мотори трябва да свързваме двигателите.
Как да използваме блокчето за дисплея, за да показваме изображения с EV3-G софтуера.
Нека направим програма, при която има движение напред и назад.
Обяснение и демонстрация на голямата задача за това занятие.
This is a teacher's note about the math behind calculating gear ratios with for our lifting attachment. It math model we build in previous tutorials is not exactly correct and here is the explanation why.