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 | ||||||
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v3.141 | sch ![]() |
brd1 ![]() ![]() |
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kicad432 | dxf.zip599 | block ![]() |
v3.14 | sch ![]() |
brd ![]() |
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kicad318 | dxf.zip287 | block ![]() |
v3.1 | sch ![]() |
brd ![]() |
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kicad296 | dxf.zip308 | pic1 ![]() ![]() ![]() |
v3.0 | sch ![]() |
brd ![]() |
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kicad279 | dxf.zip283 | pic ![]() ![]() |
Arduino firmware | ||||||
experimental code | GitHub.com | Last update: January 01 1970 | ||||
3D print component | ||||||
LCD mount | l.stl670 | r.stl620 | .scad661 | ![]() |
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Pot mount | .stl533 | .scad588 | ![]() |
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Revision 2 | ||||||
v2.6 | sch ![]() |
brd ![]() |
kicad325 | |||
Arduino firmware | ||||||
by K3NG | source | doc | pins.h680 | |||
Case | ||||||
v2.6 | full.DXF312 | DXF4cutter290 | wiki | |||
Design | front-panel.svg ![]() |
sticker.svg ![]() |
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USB isolator | view ![]() |
.scad559 | .stl578 | ![]() |
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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 |