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:
- Completly Open source
- Hardware and software is open cc by-sa
- You can modify or build own software functionality
- Arduino compatible chip (ATMEGA2560)
- Operation system independent (Linux, OSX, Windows)
- CW - complete K3NG code
- CLI interface (telnet) or Winkey emulation
- Memory button
- Speed rotary encoder
- Keying from PC com port (DTR/RTS)
- SSB
- Switch TX audio between Microphone (Foot switch PTT) and USB Audio (com PTT)
- Playing audio memory from PC
- FSK (RTTY)
- from three source
- Serial com port (DTR/RTS) - EXTFSK
- Serial com port ASCII (telnet)
- Three button memories
- Sidetone
- Decoding TX signal during transmit from EXTFSK
- DIGI Modes
- Adjust TX volume buttons
- Adjust RX volume potentiometer
- Isolated audio path with two transformers
- CAT
- Support TTL (Icom) and 232 level (Kenwood, Yaesu)
- Own serial to USB interface with internal USB HUB
- Band decoder
- Support Icom, Kenwood, Yaesu CAT
- Sniffing TRX to PC communications or automatically own request
- Outputs
- TTL level BCD
- CAT on ACC connector - CI-V, Kenwood/Yaesu (need TTL/232 converter)
- IP output (in future)
- OTHER
- INTERLOCK - switches OFF all PTT signals, defined by Sequencer delay
- Galvanically isolated USB to PC - four independent ground
- PC
- Transceiver
- RX audio
- TX audio
- micro SD card slot for future use (save config)
- Ethernet module
- two type PA PTT output
- Relay - isolated but 5ms latency
- Open collector - quick
- ACC connector (HDMI type) with
- Serial line
- I2C
- PWM
- Analog inputs
- Digital in/out
 Block diagram III |
 Circuit III |
 Block diagram rev 2.6 |
 Circuit rev 2.6 |
Short menu intro
Download
| Revision 3 | ||||||
|---|---|---|---|---|---|---|
| v3.141 | sch  |
brd1  2 1138 |
 pcb [20MB] |
kicad999 | .dxf1324 | block |
| v3.14 | sch  |
brd  |
pcb [17MB] |
kicad699 | dxf.zip701 | block  |
| v3.1 | sch  |
brd  |
pcb [17MB] |
kicad700 | dxf.zip724 | pic1  2  3  |
| v3.0 | sch  |
brd  |
pcb [16MB] |
kicad660 | dxf.zip667 | pic  panel  |
| Arduino firmware | ||||||
| Code | GitHub.com | |||||
| 3D print component | ||||||
| LCD mount | l.stl1591 | r.stl1449 | .scad1494 | 3D preview |
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| Pot mount | .stl1247 | .scad1412 | 3D preview |
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| Revision 2 | ||||||
| v2.6 | sch |
brd  |
kicad719 | |||
| Arduino firmware | ||||||
| by K3NG | source | doc | pins.h1519 | |||
| Case | ||||||
| v2.6 | full.DXF708 | DXF4cutter678 | wiki | |||
| Design | front-panel.svg  |
sticker.svg  |
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| USB isolator | view  |
.scad1249 | .stl1290 | 3D preview |
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 Open-Hardware
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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 |
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