Some quick pics of a prototype I have been working on. It reminds you to check if you have a baby onboard when the car engine is turned off by playing a lullaby tune. It works on power ports that turn off or stay on when the key is removed by sensing voltage levels and auto calibrating to your vehicle. The green led turns on when the unit is armed and working. When the engine is turned off, after a delay of 2.5 seconds the green led turns off and the tune is played. I'm still tweaking the program parameters.
