Calculator Printer
Hi, I have a small printer from a printing calculator that i'd like to use with
my BSC2. The printer has 6 wires coming from it, 2 do directly to the main
motor and the other 4 i'm not sure. Can anybody help me with this or has anyone
done this before?
Thanxs
--Steve
[noparse][[/noparse]Non-text portions of this message have been removed]
my BSC2. The printer has 6 wires coming from it, 2 do directly to the main
motor and the other 4 i'm not sure. Can anybody help me with this or has anyone
done this before?
Thanxs
--Steve
[noparse][[/noparse]Non-text portions of this message have been removed]
Comments
mine works is that as the motor spins it turns a gear train, and in turn
that turns a cylinder with the numbers on it. This cylinder is connected
to a rotary shaft encoder. there are 16 digits that it can print, and
each is connected to an input pin. when the input pin goes high, a tiny
soloind pushes a locking mechanism into place, preventing 1 of the 16
rotors from turning. I am sorry if this description is a little hard to
follow, but bear with me... As the motor continues to turn, the brake
passes over every one of the 12 positions on each rotor (unless it is
locked) until the end where it stops turning and moves it forward to
print on the paper. all of this is done in about 1 second when it was in
the calculator. it has 22 pins, and I am just figuring out what all of
them do...
You have it easy. What I suspect is that there is a chip on yours that
controls the whole process serially. this means that it would be very
easy to control the whole thing with an "H" bridge and a stamp II (or
even stamp I). But you need to figure out the protocol... Do you have a
part number? or have you kept the calculator? If so you could look up a
spec sheet. Let me know if you have either.
Good Luck... JSD
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an Epson T41 but i can't find the spec sheet.
Original Message
From: <theshadow2754@h...>
To: "Basic Stamps @ Yahoo" <basicstamps@yahoogroups.com>
Sent: Wednesday, September 11, 2002 1:50 PM
Subject: [noparse][[/noparse]basicstamps] Calculator Printer
> I have a printer from a printing calculator that I took apart. The way
> mine works is that as the motor spins it turns a gear train, and in turn
> that turns a cylinder with the numbers on it. This cylinder is connected
> to a rotary shaft encoder. there are 16 digits that it can print, and
> each is connected to an input pin. when the input pin goes high, a tiny
> soloind pushes a locking mechanism into place, preventing 1 of the 16
> rotors from turning. I am sorry if this description is a little hard to
> follow, but bear with me... As the motor continues to turn, the brake
> passes over every one of the 12 positions on each rotor (unless it is
> locked) until the end where it stops turning and moves it forward to
> print on the paper. all of this is done in about 1 second when it was in
> the calculator. it has 22 pins, and I am just figuring out what all of
> them do...
>
> You have it easy. What I suspect is that there is a chip on yours that
> controls the whole process serially. this means that it would be very
> easy to control the whole thing with an "H" bridge and a stamp II (or
> even stamp I). But you need to figure out the protocol... Do you have a
> part number? or have you kept the calculator? If so you could look up a
> spec sheet. Let me know if you have either.
>
> Good Luck... JSD
>
>
> [noparse][[/noparse]Non-text portions of this message have been removed]
>
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