RE: [beam] A lot of things...
- I already said all that!
Surfing for Money isn't always a scam,
my bank account's standing proof!
From: Bruce Robinson [mailto:Bruce_Robinson@...]
Sent: 01 July 2001 02:54
Subject: Re: [beam] A lot of things...
> César Blum Silveira wrote:Hi, César. Here are some answers -- sorry I can't help you on all of
> I have some questions:
> 1) What will happen if I connect a pager motor to aIt depends on the pager motor. Try it and see.
> bicore powered with 3V?
> 2) What ca I use to connect the legas of my walkersA popular method is to solder the legs to a piece of terminal block,
> to the motors?
then clamp the terminal to the motor shaft. There is an excellent
close-up photo of this arrangement at:
about 8 images down the page. Sorry, there's about 300 k of images on
the page, but it's worth waiting for.
> 3) How can I make the inclination in the front of mySome people use large paper clips to make a frame. Sparky (S.G.) used
> two-motor walkers, without using a PCB?
small pieces of aluminum angle. I am building a walker with very large
gearboxes, and I used two metal straps purchased from a hardware store,
and bent in a vise.
> 4) Can I solder a paperclip to a motor?It has been done by some people. I personally would avoid it, because a
little too much heat will cause permanent damage to the motor.
> 5) Which is the simplest and cheapest photovore?Can't help you there.
> 6) How can I "control" a Microcore?Take at look at This page on Eric's site. About half way down the page
you'll see an article of mine on how to influence a microcore:
> 7) How does a head work: it looks from one side toof light?
> other or it spins until it get the brightest source
It depends on the circuit. Typically, light strikes two photo-devices
and if one is receiving more light than the other, the head turns to
balance the amount of light reaching each "eye". Heads that seek out the
brightest light by spinning or scanning are less common.
> 8) Are cassete player's motors geared?Apparently some very expensive ones are. I've never seen one -- the ones
I've dismantled use small belts and pulleys.
> 9) Can I use cassete player's motors in walkers?If they aren't geared, it's difficult. A few people have successfully
built their own gearboxes by dismantling timers, etc.
> 10) If I use two bicores in a two motor walker,If you leave them independent, they will simply make each motor
> they can be independent of each other or they
> need to have a connection betwwen them?
oscillate. If they aren't synchronized somehow, the walker may be able
to move, but not very efficiently. Also, it is very unlikely that the
two bicores will oscillate at exactly the same speed, so even if you get
your motor walking, the gait will change and the walker may even start
So the short answer -- you might get away without connecting them, but
it's not a good idea.
> 11) How can I make a two motor walker with twoHave a look at Ian's site:
> bicores that avoids obstacles?
> 12) I've heard that logic gates are made withI recall this being posted to the list a few months ago. Can't remember
> transistors, inside ICs. Anyone knows how to
> make an inverter gate?
exactly when or who came up with the circuit. Probably Wilf.
And finally, a suggestion. When you put this many questions in a
message, one or two of them may be overlooked by the person who could
answer them. If you don't get satisfactory answers to one question, try
posting the question again, by itself.
To unsubscribe from this group, send an email to:
Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
> César Blum Silveira wrote:try it and see!
> Hi all!
> I have some questions:
> 1) What will happen if I connect a pager motor to a bicore powered
> with 3V?
> 2) What ca I use to connect the legas of my walkers to the motors?paperclips?
> 3) How can I make the inclination in the front of my two-motorpaperclips? use the giant ones, they're stronger.
> walkers, without using a PCB?
> 4) Can I solder a paperclip to a motor?as long as you clean the motor first, and you have a very hot iron! I've
been unable to do this with a 25w iron, but no probs with a 50.
> 7) How does a head work: it looks from one side to other or it spinsthe difference in light on the two sensors defines which way, and how
> until it get the brightest source of light?
fast it spins. in theory, it should stop spinning if the light levels
> 8) Are cassete player's motors geared?no. they have speed control circuitry in them (all the ones I've seen
> 9) Can I use cassete player's motors in walkers?you can try, though I dont think they'd work too well if your walker is
solar powered due to the weight of the motors.
> 12) I've heard that logic gates are made with transistors, inside ICs.base (via a resistor, 1-10k) is the input, emitter connected to 0v,
> Anyone knows how to make an inverter gate?
collector tied to +ve by a resistor (value depends on your app. 1k for
ttl, 10-100k for cmos). junction between collector and resistor is the
> 13) This isn't a question. Look this 'bot thata I built. It's aits probably oscillating (turning on and off very fast). try a larger
> solaroller made with a car frame! It charges each 2 seconds in direct
> sunlight, but there is a problem with this, nd I would like to know if
> anyone knows what can be this: If there is so much light, it activates
> only one or two times and then stops and starts making a very low
> noise. Could anyone help me?
storage capacitor. if that doesn't work, play with it and tell us what