### Robotic Simulator Tutorials in Unity Engine (Every Tuesday and Friday)

Mecharithm has a huge surprise for you. We developed a series of tutorials on building a robotic simulator on Unity Engine. You can watch these tutorials every Tuesday and Friday at 12 pm CST and learn the A to Z of developing a professional simulator for a UGV robot capable of carrying objects on Unity for FREE (you heard that right)! The topics of this course are designed on the basic requirements for building a simulator so that users can develop their desired simulator on Unity engine even without prior knowledge of the Unity programming. Tomorrow at 12 pm CDT,…

### Velocities in Robotics: Angular Velocities & Twists

In the previous lesson, we saw an introduction to screw theory and its applications in robotics. We saw that integrating a constant twist over time gives us the configuration. We also became familiar with exponential coordinates of robot motions, and we saw that in order to define the screw axis, we need to understand angular and linear velocities. In this lesson, we will become familiar with the concept of velocities in robotics, and we will study angular velocities and twists. This lesson is part of the series of lessons on foundations necessary to express robot motions. For the complete comprehension…

### Screw Motion and Exponential Coordinates of Robot Motions

This lesson is part of the series of lessons on foundations necessary to express robot motions. For the complete comprehension of the Fundamentals of Robot Motions and the tools required to represent the configurations, velocities, and forces causing the motion, please read the following lessons (note that more lessons will be added in the future): https://www.mecharithm.com/category/fundamentals-of-robotics/fundamentals-of-robot-motions/ Also, reading some lessons from the Fundamentals of Robotics course are deemed invaluable. In this lesson, we will see an introduction to screw motion in robotics, and we will also see how we can define exponential coordinates for robot motions. This is the first lesson on…

### Multiple Players/Users in Augmented Reality (AR)

In the previous lesson, we addressed an important problem among augmented reality users. How can we use the hand as an operator for augmented reality? We learned about solutions to implement this technology in mobile and how to use hand and finger movement as a tool for user interaction with the application. We also became acquainted with some practical SDKs for implementing this technology and understood their applications. In this lesson, we are going to look at another practical topic about how we can share augmented reality data and content with multiple users around the world and view their AR…

### Hand Tracking in Augmented Reality (AR)

In the previous lesson, we learned a new way to implement location-based augmented reality without using GPS. We learned how to position objects in augmented reality accurately and offline. In this video, we want to use a new and handy feature for augmented reality to increase the productivity of AR applications and provide practical freedom for the user. If you want to know how you can implement this, continue this lesson by watching the video version of the lesson at the link below: https://www.youtube.com/watch?v=zJq1gp0t_SU You can also watch more lessons about Virtual Reality (VR) and Augmented Reality (AR) in the…

### Location-based Augmented Reality (AR) without GPS

In the previous lesson, we learned about location-based augmented reality with GPS and how one or more geographic coordinates can be used as operators in the content displayed by augmented reality. We also talked about the challenges in this area and learned how to overcome them. In this lesson, we will learn about a new approach to implement location-based augmented reality. In this new method, the device does not need to be connected to any GPS satellites or even the Internet, and all calculations will be done offline. If you want to know how you can implement this, continue this…

### Training Modalities in Rehabilitation Robotics

As we saw in the previous two lessons, rehabilitation robots can generally be categorized as upper-limb rehabilitation robots and lower-limb rehabilitation robots. No matter which part of the body they are targeting to rehabilitate, they can provide four different types of physical therapy that should be chosen based on the patient's needs. They are passive rehabilitation, active-assisted rehabilitation, active-resisted rehabilitation, and bilateral manipulation. Passive Rehabilitation Passive Rehabilitation can be used at the early stages of the impairment where the affected limb has no movement. In this type of therapy, the robot moves the affected limb of the patient through a…

### Lower-Extremity Rehabilitation Robots

Previously, we learned about rehabilitation and the importance of robot-aided rehabilitation. We have also seen some of the upper-limb rehabilitation robots and how they operate. In this lesson, we will become familiarized with lower-limb rehabilitation robots that are helpful for patients with lower-extremity disorders. Lower-extremity exoskeleton robots can be designed to help the movement of a specific joint, or they are designed for gait rehabilitation. They can also serve as assistive devices to perform activities of daily living (ADL). Joint-specific Rehabilitation/Assistive Exoskeleton Robots Joint-specific rehabilitation/assistive exoskeleton robots are used for body joints rehabilitation and can be made to rehabilitate or…

### Upper-limb Rehabilitation Robotics

You may have already heard about rehabilitation, or you may have used some of the services in the past, or the first thing that comes to your mind is Britney Spears. But whatever you've already had in your mind, rehabilitation refers to enhancing or restoring the movement and quality of life for people with disabilities or other impairments due to diseases or injury. By definition, rehabilitation refers to help restore movement and function to people with disabilities caused by diseases or injury. However, doing repetitive tasks for long periods of time is daunting and less intensive than needed for proper…

### Location-based Augmented Reality (AR) Using GPS

In the previous lesson, we learned how to implement an AR scene with a 2D image as a marker, and also, we learned how to detect the ground and put the 3D model on the ground. In this lesson, you will learn about the implementation of an AR application using GPS coordinates from three satellites without using an image marker or ground detection. Watch the video below for the entire lesson: https://www.youtube.com/watch?v=9ltZuIJKLOI You can also watch more lessons about Virtual Reality (VR) and Augmented Reality (AR) in the link below (note that more lessons will be added in the future):…