The PolyDAC (X)
Reproduced with permission from Paul Maddox

Welcome to the official supplier of the ASM-2 pcb

The PolyDAC was a 4-channel MIDI-CV Converter originally designed by Paul Maddox and released in partnership with Tony Allgood of Oakley Sound Systems. Recently this designed was released to the general public and is now no longer supplied by Oakley Sound Systems

The PolyDAC(X) is now available here, with permission from Paul Maddox, and I am now able to supply a new PCB and (optional) Component Kit for this popular design.

Updated schematics are provided below and readers are advised to visit
both Paul and Tony's website for further details on the original designs.

CPU Section

D-A Converter Section

Output Section 1

Output Section 2

Output Section 3

Output Section 4

Power Supply

The PCB

Bill Of Materials

Example Panel Wiring Details

Download PolyDAC Flash and EEPROM files

Download PolyDAC Source

Available now - a 1U 19" Rack Enclosure with Front Panel

Photos show the White-on-Green panels. White on Black also available.

* Please note that these schematics are re-drafts of the original schematics and that
the following alterations have been made to them:-

  • I have used a new designator series to improve readability of the circuits
  • Previously unused I/O pins on the ATMEGA have been bought out for future expansion
  • The PCB has been relayed out
Email:  elby_designs@ozemail.com.au
© Copyright 2000. All rights reserved.     Revised: August 5, 2007