RE: TI-H: servos

To: "'ti-hardware@lists.ticalc.org'" <ti-hardware@lists.ticalc.org>
Subject: RE: TI-H: servos
From: Mike Leister <leister@baghwan.nsc.com>
Date: Mon, 8 Jun 1998 12:04:44 -0700
Delivered-To: ti-hardware-outgoing@towerguard.unix.edu.sollentuna.se
Reply-To: ti-hardware@lists.ticalc.org

You send a pulse train (about 60hz) and change the pulse width to change the servo position.  I don't know what the power output of the link port is, so you will need to amplify the power with a transistor.  Use a high gain darlington pair like the MPSA14 (available from Digikey for less than a dollar).  Connect the base to the linkport signal, the collector to the battery, and the emmiter to ground.

Mike

-----Original Message-----
From:	Gregory Whitmore [SMTP:whitmore@eatel.net]
Sent:	Sunday, June 07, 1998 6:30 PM
To:	TI-hardware
Subject:	TI-H: servos

Has anyone found a way to control servos with the TI calcs? What about
using servos on a PC serial port? I have found stuff to run them from a
parallel port but would like to go serial.

Greg

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