He’s got a Dell Vostro A90 which ... on the situation. Now the LED can be turned on using CTRL. An ATtiny13 microcontroller monitors pins 1 and 11 of the keyboard, waiting for the CTRL keypress ...

When the chance arrived to buy a mechanical keyboard for not a lot, naturally, [Hales] jumped at it. Then it started having odd intermittent problems with some keys appearing stuck, which led to a ...