Is this normal - PLZ HELP!!

computer guy

I have just finished attaching the propeller DIP up to my homemade board.
I have a light connected to each regulator via a 1k resistor.

5v-->1k-->led-->GND

3.3v-->1k-->led-->GND

If i connect the propplug up to my board the 3.3v power light comes on.
I have checked all my wiring with a multimeter.

Is this normal?

Thank you

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Check out my robot using the propeller robot.tmcp.com.au
If you offer cheap PCB fabrication, perl programming or any other helpful services please email me at.
anthonybmyatt@yahoo.com.au

Leon

This often happens when programmers are attached without a supply being present - enough current sneaks back to the supply though the device pins to light an LED.

Leon

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Amateur radio callsign: G1HSM
Suzuki SV1000S motorcycle

computer guy

Is there a way to overcome this?

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Check out my robot using the propeller robot.tmcp.com.au
If you offer cheap PCB fabrication, perl programming or any other helpful services please email me at.
anthonybmyatt@yahoo.com.au

Leon

I don't think so, apart from putting a diode in the supply. It doesn't cause any harm. You could always remove the LED if it bothers you.

Leon

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Amateur radio callsign: G1HSM
Suzuki SV1000S motorcycle

computer guy

Thanks will have to ignore it then.

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Check out my robot using the propeller robot.tmcp.com.au
If you offer cheap PCB fabrication, perl programming or any other helpful services please email me at.
anthonybmyatt@yahoo.com.au