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Re: [beam] Cybug Modifications.

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  • Clifford Boerema
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    Message 1 of 18 , Feb 1, 2004
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      --- Wilf Rigter <wrigter@...> wrote:
      > Ok, I just read the manual that says you can select
      > different behaviour with
      > J1 and J2. So that requires a different solution.
      >
      > The way to get around the problem of the hunger
      > upgrade and user selected
      > behaviour is to stay on the motor side of J1 and J2
      > and control the motor
      > driver enable lines instead of the timers.
      >
      > The attached schematic shows how. This is a much
      > nicer solution in that it
      > turns on the motors 100% during turning and
      > reversing.
      >
      > wilf
      >
      > --- evilprofessorvonrodentstein wrote:
      > > Because my (robot's) right eye and timer are
      > connected to the left
      > > motor (to create photophobic behaviour) I think
      > that the Q2 diode
      > > should go to the left timer in my case ( so the
      > left sensor is still
      > > affecting the right motors pulses). I am I right?
      > > Bearing this in mind, I've thought of potential
      > problems which could
      > > arise when using a hunger upgrade module.
      > Presumbly the voltage
      > > moniter replaces the jumpers and electronicly
      > switches them round for
      > > photophobic when high voltage and phototropic when
      > running low, so it
      > > can find a feeding station. So each timer could
      > control either motor,
      > > and using the current soluton in one mode the
      > wrong motor would be
      > > given longer pulses. My none electronicly
      > orientated brain tells me
      > > that the solution would either involve somthing
      > complex to find out
      > > what mode the cybug is in, or to make either
      > switch give both motors
      > > longer pulses, though this would result in a turn
      > on the spot rather
      > > than a backup turn.
      >
      > ----- Original Message -----
      > From: "evilprofessorvonrodentstein"
      > <evilprofessorvonrodentstein@...>
      > To: <beam@yahoogroups.com>
      > Sent: Sunday, January 25, 2004 12:41 PM
      > Subject: [beam] Cybug Modifications.
      >
      >
      > > Does anyone own one of the cybug scarab kits (
      > jcminventures.com )?
      > > Well, I don't know if anyone else has noticed, but
      > in bright
      > > conditions it gets stuck against objects and can't
      > back up properly
      > > due to both motors going slowly. So what I want to
      > know is if anyone
      > > knows how to modify it so it always backs up at
      > full power.
      > >
      > >
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      >
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      >

      > ATTACHMENT part 2 image/gif name=part of cyb_sch.gif



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    • evilprofessorvonrodentstein
      ... addition of the ... to LDR ... light ... day or so. ... I think that this must of slipped your mind Wilf, but I d still be interested in the circuit
      Message 2 of 18 , Mar 14, 2004
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        --- In beam@yahoogroups.com, "Wilf Rigter" <wrigter@d...> wrote:
        >
        > The complete redesign meant the basic Scarab design with the
        addition of the
        > above, an improved obstacle delay circuit, more uniform sensitivity
        to LDR
        > light differences and an activity level dependent on the absolute
        light
        > level. I will post the improvements incrementally over the next
        day or so.
        >
        > wilf


        I think that this must of slipped your mind Wilf, but I'd still be
        interested in the circuit designs if it isn't too much trouble.
        Tom W
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