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Unread 20-09-2005, 21:16
sciguy125 sciguy125 is offline
Electrical Engineer
AKA: Phil Baltar
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Re: Additional basic stamp servo power supply

I was drawing some schematics for my lab report, so I made one for you too. How do you like my 1337 p41n7 skillz?

You can use the output from the 7805 to power both the servos and the Stamp. If connect power only to Vdd, you can bypass the onboard regulator. Just make sure you use 5V lest you fry your Stamp. You can connect your i/o pin directly to the servo signal pin because it doesn't use much current. However, you mentioned to me a few days ago that you had some current issues with LEDs, so I put a 74245 in line with it in my schematic to show you how to use it. The 245 is an octal non-inverting buffer. I'm not sure about others, but the 74AC245 can handle 70mA on each output. You could also use a transistor to drive your LEDs (or whatever else), but I like to use ICs whenever I can because they're in a neat little package. They're nice if you don't need big currents.
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Last edited by sciguy125 : 20-09-2005 at 21:19.
 


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