One of James West’s sons has been known not to hear the cry of “tea time!” because of loud music playing in his bedroom. James has come up with a Raspberry Pi solution to the problem featuring a 12V LED tower with buzzer. Using some code from Pimoroni and using one of their Automation pHATs and a 12V power supply, he’s hooked it up to a Raspberry Pi Zero which monitors Twitter for a hashtag. When the hashtag is activated, the lights come on in sequence and the (quite ear-piercing) buzzer sounds. He’s wrapped the wiring inside a wooden box for safety. You can read about the project, and get the code, on his blog and see a video of the final project below: