"-I'm mostly sitting hunched over my soldering iron and smelling the fumes."
"-Right... I... should be going now."
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| 1) It just keeps bringing more friends along... |
I will genuinely be surprised if even half the ports on this board works when I'm finished with it.
Next time - Pay up, Mr!
did you ever work out the amp draw on bulbs vs leds?
ReplyDeleteI used this as reference on the bulbs - http://www.pinballnews.com/learn/lamps.html
ReplyDeleteIn an earlier post I came to the conlusion that I needed around 6A for 24 lamps to be on at 100% duty cycle. I'll most probably runt them at 25% or so to save energy (and bulbs!).
As for the amperage on the leds - No, I didn't. But I did try to drive them directly from my circuit without using MOSFET's, and that didn't work very well. The datasheet of my registers (74HC595) species a mere ±6-mA output drive at 5V, which is far too low for the LED's. :)