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[DPRG] Serial Woes

Subject: [DPRG] Serial Woes
From: DeltaGraph at aol.com DeltaGraph at aol.com
Date: Sat Feb 3 11:08:41 CST 2007

Jeff, The Acroname BrainStem module uses a MAX232 (or  look-a-like) chip 
powered by 5 volts from host.
The module, brings out  4 pins +5, GND, RX (TTL) and TX (TTL)  that plugs 
into a male 4 pin header.
 
 
By the way (I never thought about this in the past), RTS and CTS use a  
buffer and a driver and are brought out as pads on the module (on the TTL side).  
Maybe best to jumper there to prevent driver contention.
 
I did this (jumpered on RS-232 side) without thinking. Wonder about excess  
current consumption....
 

By the way I have used one of these on every microcontroller board I have  
built / bought over the past several years. They are a big time saver if you are 
 wiring up microcontroller board from scratch (about $10 or $11 each)
 
Ron
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