Recent content by buildernick

thanks for all the ideas the reason i wanted a tap sensor is because, when it's dark, i don't want to have to be searching for a switch to turn on the led's, i want to be able to turn it on no matter where I'm sitting at the table. i don't think i want to use a microcontroller because of cost...

are there any analog ways for say if i had a switch that would go high momentarily that would cause the led's to turn on, stay on for a few seconds and turn off, or dim, like would having a ciruit that charges up a small capacitor and then running the leds off of that work? i think I'm going...

i just found this little project, which is sort of exactly what i need http://www.dimensionengineering.com/appnotes/alarmclock/alarmclock.htm

yeah I like the accelerometer idea so i guess i'd need to figure out -if i epoxy the sensor to the glass, what kind of range would the accelerometer need to detect the vibrations -does anyone know a cheap source for this kind of thing -how would i transfer the output of the accelerometer into...

Thanks for the ideas. yeah it would usually have varying things on it, but I don't care if it gets turned on inadvertently by putting drinks down. I'm thinking I should make more of a neat switch that's built into the frame around the table instead, like you said with the two wire approach.

So I'm building this glass table, and I'm going to put a few led's around the edges so i can light up the table if i need to find something in the dark (like while watching a movie). and I want a cool way to turn on the light, so I was thinking about making a circuit that when you tap the table...