DDM-4 & OEM4-LED
                 GENERAL

While hosted on the MDM-1 site this page contains information on using serial displays.  The software has been written using the MDM-1, this uses a Microchip 16F877 @ 4Mhz, but  could be ported to any microcontroller or processor.  high level languages have been  used.

The DDM-4 is a 4 digit LCD display.  Modules can be daisy chained

The OEM4-LED is a 4 digit 7 segment LED display with 4 external LED outputs.

An optional IP67 rated bezel the BEZ 700 is available for the DDM-4.

       DDM-4 DOWNLOADS

Simple demo written in JAL.


      OEM4-LED DOWNLOADS

Selectable Demo mode and digital volt meter written in Hi Tech C.





                    LINKS

Datasheet of the Microchip AY0438 display chip used on DDM-4.

Opto Tech 35-Bit LED display driver (PS035) datasheet.