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   224	pcb [20MB]	kicad31	dxf.zip31	block
v3.14	sch	brd	pcb [17MB]	kicad27	dxf.zip17	block
v3.1	sch	brd	pcb [17MB]	kicad39	dxf.zip15	pic1   2   3
v3.0	sch	brd	pcb [16MB]	kicad35	dxf.zip16	pic   panel
Arduino firmware
experimental code			GitHub.com		Last update: January 01 1970
3D print component
LCD mount		l.stl50	r.stl53	.scad44	3D preview
Pot mount			.stl46	.scad57	3D preview
Revision 2
v2.6	sch	brd	kicad33
Arduino firmware
by K3NG		source	doc	pins.h25
Case
v2.6		full.DXF24	DXF4cutter16	wiki
Design			front-panel.svg	sticker.svg
USB isolator	view	.scad40	.stl47	3D preview
Open-Hardware
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