KiCad ⁽¹⁾

The idea for this project was a simple countdown timer to be used by children for various games and activities where the user interface was designed to be as simple as possible; the display was clear from across the room and provided a sense of urgency, with a clear notification when the time was up. I started from the need for a large bright display, which meant using the largest economically available 7-segment LED modules. Starting a timer should be as simple as pressing a single button with a fixed function, so there is no time adjustment (up/down) facility which can be fiddly and non-obvious to use. Those often require long presses to get into a fast increment mode and are not consistent in how they accelerate. Choosing the time periods at the start of the project meant that the…