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How to Connect Serial Devices... — Parallax Forums

How to Connect Serial Devices...

KyeKye Posts: 2,200
edited 2008-02-22 19:38 in BASIC Stamp
Hello,

I've run out of I/O pins on a project that I've currently been working on and I've been forced to use the BS2p24's RX and TX serial data lines to transmit and recieve data.

So...

I managed to get the TX line to drive the Parallax LCD display using a transistor inverter.

attachment.php?attachmentid=46142
I used the TX line on the Basic Stamp though. But how would I enable a 0 - 5V TTL device like the Parallax RF reciever to transmit data into the RX pin on the Basic Stamp?

Would this work?

attachment.php?attachmentid=46144

Or this?

attachment.php?attachmentid=46146

Replacing the computer with the Basic Stamp of course.

Thankyou.


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Nyamekye
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