Main > Main Forum
GPWiz-49 Joystick Mode Numeric Indicator LEDs
Toonces:
--- Quote from: Farmboy90 on March 10, 2006, 04:59:04 pm ---I hate to hijack the thread and ask a question of my own, so please forgive me. But you have done something I am wondering about so I know you can help answer my question.
You say you have all the p1 and p2 buttons wired to the same led-wiz outputs. So the p1 #1 button is wired to the same output as the p2 #1 button, etc.
Do you also have the RGB drives? I was wondering if all you do is simply splice the wires off of the led-wiz and run one splice to one button and the other splice to the second button? Is it this simple, or do you need new resistors or need to worry about power issues or anything (since two leds are now being powered by the same led-wiz output)?
Thanks!
--- End quote ---
Yes, that's how I have it wired. I also have the rgb drives. I wired each one seperately then just put both wires for the same legs of the 2 buttons I want to light up in the terminal block. Both LEDs get the signal at the same time. They each have their own resistors and a common 5V bus that feeds all of the LEDs. It's that simple. As far as power, my USB ports are rated at 500ma for the onboard ones and 250ma for the offboard ports (I have no idea why the difference, it's just what windows tells me when I get properties on the USB controllers) and the LEDs are 20ma each, max current. There are a total of 14 LED's on if all are on in a single color. That's 280ma total max current. Well within the 500ma of the port. If you are worried about it you can use an external 5V supply and go higher but you probably wouldn't need to.
Toonces:
--- Quote from: Major Rock Hardy on March 10, 2006, 05:39:08 pm ---I've tossed around the idea of using these...
I like the idea of using serial control - w/o too much hacking you might be able to hook them up to com2. Then they would display ASCII.
--- End quote ---
Not for these particular chips as they have all of the associated circuitry like a decoder and latch built in. These are HEX only displays. You could do that with a dot matrix one or a seven segment model though.