A hobby is a non-profit human choice of act to spend free time. Practicing tech facts is a very popular and common choice as a hobby. This type of hobbyist already has a preference and basic knowledge in science and they like to learn more and apply it in the manufacture of technical things. Technology-dependent hobbies are not for everyone because of their relative complexity.
Electronics is a hobby for many people and they like to make electronic products following circuit design. They have an interest in electronics and acquire sufficient knowledge in this field. It is not always mandatory to have an academic education to manufacture electronic products.
Someone can start with some basic knowledge, and by practicing, can get a lot of hands-on experiences. The electronics hobbyist likes to do things for his own pleasure, but in this process, he can make some good products and earn some money from it. Sometimes this type of practice can lead to a new invention.
A favorite recreation of the mechanical engineering field is vehicle manufacturing. For the cost of production, the aircraft or watercraft are not very popular, but the automobile is a widely accepted form of this recreation. Someone with a keen interest in cars usually wants to make their own car or at least modify it.
The ultimate goal is to make it faster, but other modifications such as new body design, lighting, engine performance and sound system are important to the fan. A car enthusiast usually grows his interest in the car from childhood and at one point he wants to modify his own car by his own hands but it requires technical knowledge. Sometimes an amateur with enough practical knowledge can get a job with a professional car manufacturing company. There he can earn a lot of money in the field of his interest.
Much the same as making a car, making radio-controlled instruments is a popular hobby for many people. It not only requires mechanical knowledge but also electrical and electronic knowledge. The mechanical part includes the body structure and makes it workable. The electronic part to control it by wireless instructions and its circuit design. A common example of this type of hobby is a radio controlled model airplane. Most of the time, the hobbyist designs the plane after one of his favorite original models.
Another new hobby, totally based on modern technology, is robotics. This hobby requires a lot of experience in mechanical and electronic sciences. But another thing is very important for robotics and that is artificial intelligence. Modern robots not only complete the predetermined task, they can now contact a human. This type of recreation needs a lot of education and skill.
Programming is a new but fast growing hobby among young people. Programming and other computer related subjects totally depend on modern technology. It takes a lot of knowledge about the working process of a computer to write a program. It requires some academic knowledge as well. Someone can be a genius and understand basic programming techniques with ease, but to make it perfect for practical use, he or she must have some education in the related field.