Printing with water

Amazing. Beautiful. Wet. Canadian artist Nicholas Hanna has created a device that reinterprets the chinese tradition of using a water brush to write poetry in public spaces. His contraption uses a computer (mounted on the handlebars) to transmit passages to a row of solenoid valves. Each character of text is converted to dot matrix and the valves synchronize the release of droplets of water as the tricycle moves forward.