The simplest and most elegant solution yet. Cheap, easy, and effective, I knew there was an easy way to cheat the system - the toughest part, to me, is going to be getting the nav unit out.
A couple questions: First off, did you need to match an input voltage for the pulse? If so, did you have to choose capacitor and resistor values at random? Or did you sit down do the back calculations and design the circuit that way? Did the 555 timer come with a wiring diagram dictating R and C values for corresponding output voltages/signal frequencies? This makes me want to get out my electronics engineering book from school and see if I can still do this type of stuff.
Also, you may want to mention in your online report that this circuit can be built on a breadboard that will allow for little or no soldering as long as you know how the nodes on the board work.
RadioShack.com - Cables, Parts & Connectors: Component parts: Breadboards & IC sockets: 6" Modular IC Breadboard Socket
Anyways, nice work. I wish I had as much time as you to come up with all this neat stuff. Now get to work on the power rear window!!
__________________
2007 Tundra DC Limited - Slate Metallic 5.7L 4WD
Red Rock Leather | Navigation | TRD Exhaust | TRD Sway Bar | TRD Supercharger | JBA Headers | URD MAF Calibrator w/ AFR Tune
ReadyLift 2.5" Front Spacers | 1" Rear Blocks |Pro Comp Front Coilovers | TRD Off-Road Package Springs | Bilstein Shocks | Pro Comp 6066 Wheels
BFG A/T KO 305/55R20 (33") |Bushwhacker Pocket Fender Flares (Color Keyed) | Escort SRX Radar Detection/Laser Defense System | Illumination by Hoen
- Coming Soon -
LED Tails | Tonneau Cover | Bed Divider | Rancho RS9000XL Shocks with in Cab Adjustibility | Pro Comp Traction Bars | Upgraded Stereo