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Simple RS-232 keypad?

P

plh

Jan 1, 1970
0
I have been looking for simple low cost Keypads w/RS-232 output. What are some
good manufacturers? Looking on the Web I keep ending up at Amazon or Ebay, but I
want to call up (someone who knows the product) before buying. I need to have at
least 3 keys but more, say digits 0-9, would not hurt. Needs to have 9 pin
serial output. (Or 24 but pref. 9. Or I could use an adapter it it came with a
USB connector.)
Use is for part of a Statistical Process Control system that is already set up
w/RS-232. Presently this is set up for digital measuring instruments using the
smart switch 232BBS4 from B&B Electronics (they don't have anything like I
describe above, I asked.). In any case not all measurements are suited for
micrometers or calipers, in some cases gage pins are used. The keypad would be a
convenient way to capture the results. Machine operators would press one key for
a good component, another for undersize, and another for oversize.
I would greatly appreciate any leads.

Thank You,
Paul Hossfield
Mahr/Federal Products Co.
1144 Eddy St.
Providence, RI 02940
Phone: 401-784-3270
Fax: 401-784-3461
[email protected]

I keep hitting "Esc", but I'm still here!
 
plh said:
I have been looking for simple low cost Keypads w/RS-232 output. What are some
good manufacturers? Looking on the Web I keep ending up at Amazon or Ebay, but I
want to call up (someone who knows the product) before buying. I need to have at
least 3 keys but more, say digits 0-9, would not hurt. Needs to have 9 pin
serial output. (Or 24 but pref. 9. Or I could use an adapter it it came with a
USB connector.)
Use is for part of a Statistical Process Control system that is already set up
w/RS-232. Presently this is set up for digital measuring instruments using the
smart switch 232BBS4 from B&B Electronics (they don't have anything like I
describe above, I asked.). In any case not all measurements are suited for
micrometers or calipers, in some cases gage pins are used. The keypad would be a
convenient way to capture the results. Machine operators would press one key for
a good component, another for undersize, and another for oversize.
I would greatly appreciate any leads.


I would just use a low end pic, an inline resistor pack of say 10k
across a port, and say up to 16 switches arranged as a matrix across
the port.
With a little code thrown in for key scan and rs232 etc. I made one of
these things for a friends' project a couple of years ago, if you get
stuck, and when I get home again, I will send you a hex file and
details on how to manufacture it.


regards
Alastair
 
J

John Robertson

Jan 1, 1970
0
Actually we are working on a RS-232 conversion interface for a
standard IBM compatible keyboard for use with the Fluke 9100A, and I
think it might work for you too. 1200b 8n1. One of the fellows on
techtools mail list actually....

John :-#)#

I have been looking for simple low cost Keypads w/RS-232 output. What are some
good manufacturers? Looking on the Web I keep ending up at Amazon or Ebay, but I
want to call up (someone who knows the product) before buying. I need to have at
least 3 keys but more, say digits 0-9, would not hurt. Needs to have 9 pin
serial output. (Or 24 but pref. 9. Or I could use an adapter it it came with a
USB connector.)
Use is for part of a Statistical Process Control system that is already set up
w/RS-232. Presently this is set up for digital measuring instruments using the
smart switch 232BBS4 from B&B Electronics (they don't have anything like I
describe above, I asked.). In any case not all measurements are suited for
micrometers or calipers, in some cases gage pins are used. The keypad would be a
convenient way to capture the results. Machine operators would press one key for
a good component, another for undersize, and another for oversize.
I would greatly appreciate any leads.

Thank You,
Paul Hossfield
Mahr/Federal Products Co.
1144 Eddy St.
Providence, RI 02940
Phone: 401-784-3270
Fax: 401-784-3461
[email protected]

I keep hitting "Esc", but I'm still here!

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