True Elevation AI on Instagram: "A DIY laser tripwire like the Daytripper project uses a laser beam and a light sensor connected to a Raspberry Pi (or similar board) to create a simple yet effective privacy-triggered alert system: a narrow laser is aimed across a desk or workspace toward an optical detector, and when someone interrupts that beam the change in light is sensed instantly. In projects like Daytripper, when motion is detected the system can automatically hide open windows, lock the s