thansen090
New Member
Hello all. I'm new to PICAXE and don't have a lot of experience with electronics. Please go easy on me. I found out about PICAXE in Nuts+Volts magazine and it seemed like a great system for my rather basic projects.
I'd like to build an LED scanner for my car. I couldn't find a commercial unit available of the right size or resolution, so I figured I'd build my own. I'm finding there are several ways to go about this so I wanted to get some feedback before I invest in parts. I'm a little disappointed there isn't more info about "Knight Rider" scanners. Using 8-16 LEDs, yes, but I want to use 64. Any help/links would be greatly appreciated.
I recently discovered addressable RGB LEDs. These seem ideal for a project like mine. The initial cost for the LEDs would be a little higher but these would pay for themselves through savings elsewhere. I've only seen some basic info on these. I'd like to know how these are wired and programmed. Pros and cons?
My original plan was to use 16 outputs from a 28X2 to control the 64 LEDs. (8 groups of 8 LEDs) Yes, I looked into Charlieplexing but I want to be able to turn on all the LEDs at once. Multiplexing like this is still worth studying but I'm hoping the addressable LEDs make this plan obsolete.
My last obstacle is figuring out how to power all this. I can build a 7805-based power supply but that won't be enough to power all 64 LEDs at once. I need a higher capacity 12v(car)-5v power supply. Suggestions?
Thanks for your help!!!
I'd like to build an LED scanner for my car. I couldn't find a commercial unit available of the right size or resolution, so I figured I'd build my own. I'm finding there are several ways to go about this so I wanted to get some feedback before I invest in parts. I'm a little disappointed there isn't more info about "Knight Rider" scanners. Using 8-16 LEDs, yes, but I want to use 64. Any help/links would be greatly appreciated.
I recently discovered addressable RGB LEDs. These seem ideal for a project like mine. The initial cost for the LEDs would be a little higher but these would pay for themselves through savings elsewhere. I've only seen some basic info on these. I'd like to know how these are wired and programmed. Pros and cons?
My original plan was to use 16 outputs from a 28X2 to control the 64 LEDs. (8 groups of 8 LEDs) Yes, I looked into Charlieplexing but I want to be able to turn on all the LEDs at once. Multiplexing like this is still worth studying but I'm hoping the addressable LEDs make this plan obsolete.
My last obstacle is figuring out how to power all this. I can build a 7805-based power supply but that won't be enough to power all 64 LEDs at once. I need a higher capacity 12v(car)-5v power supply. Suggestions?
Thanks for your help!!!