Alt-BEAM Archive

Message #00085



To: "beam@relay1.corp.sgi.com" beam@corp.sgi.com
From: Matthys Meyers p.meyers@mail.es.co.nz
Date: Tue, 02 Feb 1999 08:20:02 +1300
Subject: [alt-beam] Re: Two Motor Walker




I''m still new to this List and havn't even completed my bot or start putting
it together but i've got all the parts.  Anyway i was just thinking
ahead and for the legs - I don't know how many of u live on farms - Your
good old No. 8 wire should do it right?

And before i get people asking me what No. 8 wire is its 8 mm fencing
wire used to hold cattle and so behind a fence.

Also what kind of solder should i use.  I don't know what the
best percentage is 60%tin 40% copper or what?

Thanks

victor tee wrote:

Dear LIST;

           Just wanted
to say that I have completed my 2 motor

walker.....it's alive!!..it's alive!!!.:)))...I got into abit of a

problem concerning the  drift on the front legs.But I corrected
it using

springs from a pen.I tried to use some potentiometer to adjust the
drift

but it is not working.So, any other idea besides the spring and

potentiometer?And about cutting the potentiometer of the servo..or

something like that...cant figure that out without any diagram..sorry!

       It seems that my walker front
leg motor is horizontal to the

ground while the back legs motor is perpendicular to the ground(about

60-80deg)..so I am wondering whether this orientation is suitable for

further complex design.I know that last few weeks ago somebody mention

the motor orientation opposite of what I am doing..oh yes, my walker

walks alright..but the back legs seems to drag along and not lifting

like the front...any suggestion??Yes, I am using some thick flexible

copper wire for the legs.I am using servo motor BUT I have discard
the

potentiometer...:(

           So, got
my microcore working, built the walker, what

next??Thanks.

______________________________________________________




eGroup home: http://www.eGroups.com/list/alt-beam
">http://www.eGroups.com/list/alt-beam">http://www.eGroups.com/list/alt-beam

Free Web-based e-mail groups by www.eGroups.com
">http://www.eGroups.com">www.eGroups.com




850 Tue, 23 Feb 1999 08:22:13 -0500 [alt-beam] beam@corp.sgi.com "George Rix" Hey!
Okay, I made myself a bicore-powered photovore last night (well, I
breadboarded it anyway) and I was wondering:
Is there any way I can make it solar-powered without using the PM1 SE,
anyway easier, I mean?
Also, it works, but it isn't very sensitive to light. I predicted
(correctly, by my dad's estimate) that it would turn towards the light but
VERY slowly. I'm using two 1.8 meg resistors with my photodiodes, and no
trim pot. Should I take away one of the resistors, add a trim pot or what?
Also, where should I attach tactile sensors, assuming I make them?
Any help appreciated,
Signing off,
Rob Rix
'If anything can possibly go wrong, it probably already has'-Murphy's law

------------------------------------------------------------------------
eGroup home: http://www.eGroups.com/list/alt-beam
Free Web-based e-mail groups by eGroups.com

Home