Production of the Open Interface has been discontinued, but you can build your own, based on the available source code.

Open Interface III

is open hardware for any Arduino code for running your own hack - also standart interface between transceiver and computer with keyer for Arduino based on K3NG code and many others.

Main functions:

Block diagram III

Circuit III

Block diagram rev 2.6

Circuit rev 2.6

Short menu intro


Revision 3
v3.141 sch brd1   2704 pcb [20MB] kicad653 .dxf854 block
v3.14 sch brd pcb [17MB] kicad447 dxf.zip442 block
v3.1 sch brd pcb [17MB] kicad429 dxf.zip458 pic1   2   3
v3.0 sch brd pcb [16MB] kicad410 dxf.zip418 pic   panel
Arduino firmware
3D print component
LCD mount l.stl941 r.stl879 .scad935 3D preview
Pot mount .stl763 .scad871 3D preview
Revision 2
v2.6 sch brd kicad466
Arduino firmware
by K3NG source doc pins.h939
v2.6 full.DXF452 DXF4cutter431 wiki
Design front-panel.svg sticker.svg
USB isolator view .scad772 .stl795 3D preview
We believe open source is a better way of doing things.
View and download the Shield Schematic and PCB Kicad/Eagle CAD files,
LibreCAD .DXF, or Inkscape .SVG files.
The hardware designs are released under the
Creative Commons Attribution-ShareAlike 4.0 International License