This
is a 40 keyswitch membrane keypad. The switches are arranged in a 8 row by
5 column X-Y matrix brought out to a 3 inch ribbon cable. The
connector is a 13 position female with .1 inch spacing. The rear adhesive
is 3M467. The size of the keypad is 4.3" high by 3.5" wide.
Here is a drawing of its circuit.
The keypad exactly fits the top panel indentation in the
PacTec
HPLS enclosure or the 100 series Angled LCD Case from
Box Enclosures.
The price is $ 16.95 ea. payable thru PayPal.
Also on eBay
Here is an example of interfacing the keypad.
Here is an example of
Arduino software for this keypad.
Here are some links that may be helpful:
A review of several
encoders (some out of date)
PDN1188 Keypad Encoder
IC from Paladin Semiconductor
 |
Written August 2010 by Roger Schaefer Updated April 2015 |