Has anyone else used a basic stamp II for start up and shut down?
I built a relay board that is piggybacked to a basic stamp II board. The basic stamp turns everything on and off for me. It very is easy to program and I can give anyone a dummy program based off the one I wrote for mine.
Here's what it does...
A relay in the acc line activates when there is power. This relay closes a circuit...the basic stamp sees this switch(the relay) closed and starts it's program.
When the program starts it waits 3 seconds for the vehicle to start.
1. The pc button is "pushed" via another relay.
2. The lcd inverter is turned on via another relay.
3. The amp is...yeah same as above.
There is a delay between each of these steps. All the delays are completely customizable in milliseconds.
At this point the bsII stands-by waiting for the acc wire to go dead. Again there is another 3 second delay at shutdown also. This allows you to turn the ign switch to aux without the pc shutting down.
I also added a three-position switch to the side of the driver's seat.
Position of the switch...
1(down). The computer will start up shut down based on ign switch position.
2(middle). The computer is completely shut down and will not come on. i.e., oil changes....
3(up). The computer is on and the aux battery is isolated. Great for washing the jeep...not being killed by carbon monoxide...running into a store...that kind of stuff. The aux battery is isolated via a relay to the acc line. Anytime the computer and the jeep are on, the batteries are connected. If the jeep is off the batteries are disconnected. If the computer is off the batteries are disconnected. If the jeep is off and the computer is on the batteries are disconnected.
I use inverters and atx power supply. They are inexpensive and readily available. I have been using this setup since Feb. with no problems. I get in a start the jeep and the bsII takes care of everything else. It's playing music in about 20 seconds. When I shut off the jeep...by the time I get out the music is off and the pc is almost shut down.
Here are pictures...