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First Propeller Program Running, but have small question — Parallax Forums

First Propeller Program Running, but have small question

Bill ChennaultBill Chennault Posts: 1,198
edited 2011-02-22 11:05 in Propeller 1
All--

I've had a PPDB for a couple of weeks, but only managed to begin working with it this morning. My question is simple: It is unclear to me if I need to supply a 470 ohm resistor when using the LEDs on the PPDB.

My next step, now that I know I can blink an LED (I''m using the resistor, but don't know if it is necessary), will be to play with a simple servo that I obtained in one of the Parallax kits at one time or another. Any comments concerning this would be appreciated.

Once I get my feet on the ground for a bit with the PPDB, I think Spin will be fairly easy to pick up. My next robot is definitely going to be Propeller/Spin driven, hopefully talking to a PC via Parallax's new WiFi.

Thank you, as always, for the help.

--Bill

Comments

  • Graham StablerGraham Stabler Posts: 2,510
    edited 2011-02-22 11:05
    According to the circuit diagram on the PPDB page and looking at the picture, the built in LEDs have resistors in series with them already, these are the tiny little squares next to the tiny little LEDs :)

    If you add your own LEDs you will need a resistor in series with it.

    Welcome to the propeller forum.

    Graham

    Graham
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