4amp bulb brightness control via stamp
Aaron Wall
Posts: 31
I have a project where I'm trying to vary the brightness of a automotive fog light via basic stamp.
The system operates at 12.5v to 15v and up to 4 or 5 amps.
The control needs to be able to sweep from off to full bright and back down. I need it to be able to do this in about a second at the fastest.
Direct control of the brightness would be great. For example, I've played with the AD5220 digital potentiometer and found the pulse based incrementing to be sloppy for my needs. I have trouble keeping track of where the chip is at. It'd be nice to be able to send a byte over serial to set the resistance.
I get nervous when I start mixing my stamps with car batteries and 80amp alternators. Some sort of isolation would be cool.
Thanks for the help,
-Aaron
The system operates at 12.5v to 15v and up to 4 or 5 amps.
The control needs to be able to sweep from off to full bright and back down. I need it to be able to do this in about a second at the fastest.
Direct control of the brightness would be great. For example, I've played with the AD5220 digital potentiometer and found the pulse based incrementing to be sloppy for my needs. I have trouble keeping track of where the chip is at. It'd be nice to be able to send a byte over serial to set the resistance.
I get nervous when I start mixing my stamps with car batteries and 80amp alternators. Some sort of isolation would be cool.
Thanks for the help,
-Aaron
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