“The 555 is one of the most popular chips on the market and hundreds of projects have been created using it. More than 30 billion have been produced and it can do almost anything. This project is a universal 555 board with components laid out in the same locations as on a circuit diagram, to make it easy to produce a project. The components are not labelled so you can use your own values. Here are two circuits that can be created on the board. The description for these circuits is on the web. One of the difficulties in making a project is to convert a circuit into a layout on a PC board and this board overcomes the problem. This is because the components are placed in the same locations on the board, as on the circuit diagram. The 555 chip has been drawn on the board with the components placed around it.”