August 2010 Archives

RS232

Every cheap "Serial to USB" adapter I can find uses a PL2303 chip with active low signaling, which isn't the same as a real PC serial port. Fortunately FTDI sell real adapters. The US232B has 9V high, -9V low outputs and its inputs are open low at 0V.

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This page is an archive of entries from August 2010 listed from newest to oldest.

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Content authored by myself is just my honest opinion. If you find any words or pictures menacing or offensive, stop reading now.

Jabber

simon@arlott.org.uk
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