Alt-BEAM Archive
Message #02053
To: Ian Bernstein ian@beam-online.com, beam@corp.sgi.com,
From: Dennison dennlill@buffnet.net
Date: Tue, 6 Apr 1999 08:09:49 -0400
Subject: [alt-beam] Re: h-bridge
I'd say that much of your problems here stem primariilly from your power
supply, and how clean it is. Although I like to use 245's more often than H
bridges, they will still work. You do have to take a few precautions though.
Make sure you have a cap across the power supply, Preferabbly right across
the hc14 chip. This should smooth most of your problems out. Also though,
attache a small ceramic cap across the leads of your motors, if you don't
already have one on your H-bridge. (or even if you do). Also run the circuit
off of batteries instead of a power supply. That should help clean up things
a bit.
Dennisono
>
>I haven't done much with the microcore so I'm forwarding the message onto
>the BEAM list.
>
>
>---------------- Begin Forwarded Message ----------------
>Date: 04/05 4:53 PM
>Received: 04/05 5:46 PM
>From: Mike Kulesza, mikekulesza@hotmail.com
>To: synet@psynet.net
>
>Hey Ian!
>
>My microcore works fine, but when I attach the h-bridge to it, and try
>to set it to the stable 1 process mode, it keeps reseting itself. Again,
>the microcore works fine all by itself with no driver - it remains in
>the 1 process state when set. I rebuilt the h-bridge numerous times but
>the problem persists. What gives?
>
>Whats the PIN (input to +ve)for on the microcore circuit? Does the fact
>that i only have a PNC (input to ground) and no PIN have to do with the
>problem?
>
>----------------- End Forwarded Message -----------------
>
>
>*-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-*
>Ian Bernstein "aka - Synet" The Master Builder
>
>E-Mail - Ian@beam-online.com
>BEAM Online - http://www.beam-online.com
>Quote - "Programming today is a race between software engineers
>striving to build bigger and better idiot-proof programs, and the
>Universe trying to produce bigger and better idiots. So far, the Universe
>is winning."
> - Rich Cook
>
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