Davac4

Davac 4.0 OK1ZIA

Davac 4 was succesfully built by OK1USW, OK1UGE and OK2JTB.

Circuit diagram

Circuit diagram of Davac 4.0

PCB

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  PCB bottom side (600 DPI)
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  Components placement top
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  Components placement bottom

Note: 600 DPI have images in Full resolution, MediaWiki uses thumbnails.

PCB www.hamshop.cz

Ondra OK1CDJ has made PCBs and offers it at www.hamshop.cz. Many TNX!

Errata

• Jack holes are slightly smaller - user Dremmel milling cutter
• Parts values would be shown - use schematic

Parts

Transformer TR-1/1 www.tme.eu

Jack 6.35 K3606D www.gme.cz or K36092B

White connectors for cable pins

Black connectors for cable flat cable

Program the FT232R

As default, the FT232R acts as serial port. But Tucnak uses Libftdi to access it in bitbang mode. Default VID:PID must be changed to distinguish Davac from other USB serial ports.

Windows

Image:

MProg with loaded Davac4.ept

Under Windows, use <a href="http://tucnak.nagano.cz/download.php#mprog>MProg</a>. Download File:Davac4.ept and open it in MProg.

Unplug all other FTDI devices and press the Program All Existing Devices button.

SMT variant by OK2JTB

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  Top side
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  Bottom side
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  Photo 1
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  Photo 2
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  Photo 3
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  Schematics

All data: File:Davac4-ok2jtb.zip

Made by OK1UDC(SK) & OK1UGE

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  Front panel
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  Back panel
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  Components side

Note OK1ZIA: better use USB-B type connector

Combined Davac4 and contest machine RPi

Guys from OK1RPL made this amazing compact contest solution.

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