jdh

jdh is a channel of programming and hardware projects, each one documenting an ambitious build. The creator writes games, operating systems and even designs his own hardware from scratch.

Each video follows one project from idea to result. He has made a Minecraft style game without a game engine, written an operating system that only runs Tetris, built a graphics card and assembled a computer by hand. The videos are fast paced and show code, circuits and the problems along the way. Uploads have been infrequent, with the most recent in December 2024. He is open about mistakes and dead ends, which shows how real projects come together.

Some highlights include:

A project building a working computer by hand from individual chips.

A build of a home made graphics card, showing how images get from memory to a screen.

A challenge to make a Minecraft style game from scratch in 48 hours without a game engine.

The channel has over 290,000 subscribers.

Few channels show both the software and hardware sides of computing so directly. These projects connect to computer engineering, electronic engineering and low level software development. They show that the layers of a computer, from logic chips up to games, can be understood and built by one person. It is ideal for a student who wonders what happens inside the machine.