Anyone who's ever lived with a baby knows that sleep apnoea in infants is a big concern. You can buy specialised monitors, of course, but new Hungarian father Gjoci decided he could do better on his own.Baby monitors on the market use audio and sometimes video to allow parents to listen to and see their infant asleep. Gjoci's model, though, uses points of light and the Wiimote's motion sensor to detect his baby's movement instead.
After some trial and error using LEDs, Gjoci settled on 1mW laser diodes. Four points of light are positioned over his daughter's body, and every few milliseconds, a program makes sure the lights are still moving. If the baby is breathing — and therefore, in motion — all continues peacefully. However, if no movement is detected, a high-pitched klaxon sounds.
He chose lasers because there were no small parts his baby could accidentally swallow, and the 1mw lasers are too weak to harm his baby's eyes.It's certainly an ingenious home-grown solution — especially since it's been running continuously for two weeks without crashing and with only a few false alarms.
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