Parallax PSC serial servo controller -- can I run the CPU @ 3.3vdc

geekything

Hi all,

I know the SX can run at 3.3vdc just fine...but the datasheet specifies 5vdc, although there doesn't appear to be anything on the board that would prevent the SX running at 3.3vdc? I'm pretty sure that servos will respond to 3.3vdc control pulses...

I'd supply the servos with a separate 5vdc supply.

Thanks!

-marc

Post Edited (geekything) : 6/22/2007 12:47:53 PM GMT

Chris Savage

Hello,

The SX can run at lower voltages…The brownout detector can be set down to 2.2V. As for the PSC I just hooked it up to 3.3V and it seems to be sending out the signal to the servos but honestly I haven’t tested the serial communication at that voltage. If the microcontroller runs at 3.3V there’s no reason why it shouldn’t work.

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Chris Savage
Parallax Tech Support

geekything

Thanks, Chris...I'll give it a whirl over the weekend!

-marc

Chris Savage

Marc,

I tested the PSC on a Propeller Demo Board from 3.3V and was able to talk directly to it. So you won’t need to test yourself. The PSC appears to run from 3.3V just fine. I hope this helps. Take care.

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Chris Savage
Parallax Tech Support