LEGO Robotic Arm - our technological product in the service of sustainable development.
This is a model of a prosthetic hand made exclusively of Legos. The main purpose of the project is to create a prosthetic time frame that will precisely imitate the entire range of movements of a normal human fist and hand. All arm and elbow turns, wrist posture, abduction (moving away) and adjunction (receiving) are all controlled using Lego pneumatic cylinders. One of the goals was to maximize speed and power, but to maintain a consistent ratio between them for demonstration purposes. It is worth noting that it was designed as a prosthesis above the elbow, while the second lower part served as the base for fastening and the final appearance of the model. The weight it can lift is limited to the shape of the object and the orientation of the joint and elbow, but no more than 1kg.
The main characteristics:
A total of 5 servo engines run at 9.6 V DC
It has 12 points of free movement like the joints of a human hand
It is made in a life size using more than 150 parts
The fist can perform grip movements, adduction and abduction via pneumatic cylinders
The thumb has three points of free movement
Fingers have the ability to individually control movements
Servo motors allow forearm movements left to right
It is possible to find and supin the forearm (forearm pronation is a rotational movement where the hand and upper arm are pushed inwards while the supination of the forearm occurs when it or the palm rotates outwards)
It is possible to perform springing and shrinkage movements in the elbow
The robotic arm is an excellent multi-tasker. It can perform a wide range of work without collapsing under the weight of requirements. Some of the advantages are relatively high speed of work, increased efficiency, longer working hours and non-pollution of the environment. It is also applicable to perform repetitive actions or chores that are considered too routine (monotonous), dirty or too dangerous for humans.