Building radio receivers from scratch is still a popular project since it can be done largely with off-the-shelf discrete components and a wire long enough for the bands that the radio will receive.
If you would like to learn the basics of electronics and soldering electronic components together to make more complicated projects. A good starting point is the Arduino Make Your UNO Kit, providing ...
Follow the first part of this engineering project as a single propeller drone is built from scratch using Arduino. Discover the design, electronics, and challenges behind creating this unique flying ...