Alt-BEAM Archive

Message #05851



To: beam@sgiblab.sgi.com
From: JVernonM@aol.com
Date: Wed, 25 Aug 1999 14:01:11 EDT
Subject: [alt-beam] Re: blinking bicore


In a message dated 8/25/99 10:08:14 AM Eastern Daylight Time,
richfile@rconnect.com writes:

> I too would like to solarize a bicroe based robot. I've got now
> expirience with solar powered bicore devices. I realy have no clue what
> kind of capacitor is ideal, or if the bicore recieves power at all times
> and only the motor uses the cap, or what??? I simply have never done
> this before. if anyone has recomendations as to how the SE and Bicore
> are connected, please, do tell!
This is fairly simple and straight forward. To get LEDs to blink at night,
hook a D1 power outlets to the Bicore power inputs. Hook your LEDs to the
Bicore motor outputs and you are in bidnez. Use a 1F gold cap for about an
hour of blinking. Use the HC chip. If you are running in the daylight, then
substitute a PM1 for the D1. Hook it to your Master Bicore power leads. That
would work for a 2 motor Master slave walker, but I'm not sure of the best
configuration for 3 or more motor designs. That sounds like a question for
the Wilfmiester. Don't forget those motor drivers.
By the way, I just got 2 Chloroplast Solar Engine PCBs in the mail today.
Sleek and black. I'm gonna try switching them out for the PM1, which I've
always had trouble getting to run anything with more torque than a pager or
Walkman motor. Adjustable trigger level and a uC reserve of 5 volts, I can't
wait to start building. Thanks Craig!
Jim



5852 Wed, 25 Aug 1999 07:32:15 -0700 New Guy Questions beam@sgiblab.sgi.com owner-beam@sgiblab.sgi.com [mailto:owner-beam@sgiblab.sgi.com] On

Hello list
I have a few questions i would like to get anserwed that are proballly
redundant and stupid for the advanced builders.

1.when driving hobby servoes on a 2 mortor 4 leged walker, which is
better to use, a 74xx245 or an h-bridge? i ask because 3 245's wound
drive a servo @3v. This is my main concern, to get it walking and then
add all the things to make it a robot.

2. Sorry to be general, but could anyone explain/ give a good site in
how to incorperate a head into a walker for reversing and turning?


Thanks for all of your help, it will be very much appricated.

BG
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