Alt-BEAM Archive
Message #01921
To: Chris Daniel popjester@hotmail.com
From: Chiu-Yuan Fang chiumanfu@home.com
Date: Wed, 31 Mar 1999 16:11:31 -0800
Subject: [alt-beam] Re: walker questions
Sounds like a partial short. Clean off all the flux and check your solder
connections closely.
Instead of shorting the resistor everytime, why not just build a PNC with one of
the extra inverters.
Most solar walkers charge a main cap then walk for a minute or so then sit and
charge again.
Chiu
Chris Daniel wrote:
>
> Hey peoples!
>
> Last night I bread-boarded a microcore, complete with H-Bridges and
> servos. I was very surprised when it worked! So then I built the
> microcore on some prototyping board (leaving the H-Bridges on the
> bread-board) a tested it again - it worked. So now I built one of the
> H-Bridges on the board with the microcore (and left the other one on the
> bread-board) and now I'm having problems. When I turn it on it's in the
> saturated state (same as on the bread-board) but I short 1 of the 1M
> resistors quickly to get it going. I goes through one to about 3 cycles,
> and then switches back into the saturated state, and I have to short the
> resistor again.
>
> Can anyone tell me what's going on??????
>
> I haven't built the frame yet, I'm waiting for the motors from James.
>
> Also, how do solar walkers work? I mean, do they use an SE to charge a
> large cap and then walke a couple of steps, or charge a smaller cap,
> move one leg, charge, another leg...
>
> Thanks
>
> Chris
>
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