Recorder module, 7 LEDs, and headphone jack
This is the stuff I'm using:
9V recorder module: http://www.radioshack.com/product/index.jsp?productId=2102855
SPDT switch: http://www.radioshack.com/product/index.jsp?productId=2049718
7-8 white LEDs: http://www.radioshack.com/product/index.jsp?productId=3060980
I'm adding onto this project a little. The goal is to have the LEDs turn on when the sound starts and turn off after 6-6.5 seconds (while the sound is still playing, just before the duh duh duh duh!).
I know the 9v battery isn't going to be enough. Somehow I need to introduce more power to light the LEDs to full capacity, but not overload the recorder module after the lights power off.
Does anyone know what part(s) I need to make the light off delay work?
I also need to find a way to line up the LEDS evenly along an 8" (width) by 1-1/2" area. I was thinking soldering to two strips of metal for positive and negative (two pieces separated with silicone rubber).
Will my strategy for lining up the LED's along the back work? Any suggestions?
I would also like to replace the speaker with a female headphone jack so I can easily record the sound without background noise.
This article (http://kipkay.com/wp-content/plugins/download-monitor/download.php?id=10) also uses the same audio recorder and suggests it's as simple as wiring the jack to the positive/negative wires stating you can use a microphone or plug it into your computer.
Isn't a headphone jack on a computer powered, whereas headphones are not? I would think the recorder module is already supplying its own power for recording. Wouldn't the power from the headphone jack potentially overload the recorder circuit?
So is it OK to wire a female headphone jack to the positive/negative wires on the recorder module without a resistor?
Any insight you guys could provide would be appreciated! Thanks!