Davac4: Difference between revisions

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=Davac 4.0 OK1ZIA=
=Davac 4.1 OK1ZIA=


Davac 4 was succesfully built by OK1USW, OK1UGE and OK2JTB.
Davac 4.1 is updated version of [[Davac4.0|Davac 4.0]] designed in 2008.
 
==News==
* IRLML2264 instead of IRF7220
* Silscreen cleanup
* Values on silkscreen
* Jack holes are 2 mm
* Guard ring connected to GND
* Manufacturing data for [jlcpcb.com] included


==Circuit diagram==
==Circuit diagram==
Line 14: Line 22:
Note: 600 DPI have images in Full resolution, MediaWiki uses thumbnails.
Note: 600 DPI have images in Full resolution, MediaWiki uses thumbnails.


==PCB www.hamshop.cz==
[[File:Davac4hamshop.jpg|320px|link=https://www.hamshop.cz/pcb-c7/pcb-davac4-ok1zia-i358/]]
Ondra OK1CDJ has made PCBs and offers it at [https://www.hamshop.cz/pcb-c7/pcb-davac4-ok1zia-i358/ www.hamshop.cz]. Many TNX!
===Errata===
* Jack holes are slightly smaller - user Dremmel milling cutter
* Parts values would be shown - use schematic


==Parts==
==Parts==
Line 56: Line 56:


Keep '''libusbK''' and press '''Install Driver'''.
Keep '''libusbK''' and press '''Install Driver'''.
=SMT variant by OK2JTB=
<gallery mode="packed" heights="320px">
Image:davac4-ok2jtb-front.png|Top side
Image:davac4-ok2jtb-back.png|Bottom side
Image:davac4-ok2jtb-back-1.png|Photo 1
Image:davac4-ok2jtb-back-2.png|Photo 2
Image:davac4-ok2jtb-front-1.png|Photo 3
Image:davac4-ok2jtb-schema.png|Schematics
</gallery>
All data: [[File:Davac4-ok2jtb.zip]]
If you want this PCB, try to ask OK1WMR.
=Made by OK1UDC(SK) &amp; OK1UGE=
<gallery mode="packed" heights="320px">
Image:Davac4_UDC_UGE_1.JPG|Front panel
Image:Davac4_UDC_UGE_2.JPG|Back panel
Image:Davac4_UDC_UGE_3.JPG|Components side
</gallery>
''Note OK1ZIA: better use USB-B type connector''
=Combined Davac4 and contest machine RPi=
Guys from OK1RPL made this amazing compact contest solution.
<gallery mode="packed" heights="320px">
Image:IMG_20190122_144139027.jpg
Image:IMG_20190123_185415964.jpg
Image:IMG_20190123_185427268.jpg
Image:IMG_20190123_191712849.jpg
Image:IMG_20190131_112445866.jpg
Image:IMG_20190131_112456794.jpg
</gallery>

Revision as of 14:23, 18 January 2022

Davac 4.1 OK1ZIA

Davac 4.1 is updated version of Davac 4.0 designed in 2008.

News

  • IRLML2264 instead of IRF7220
  • Silscreen cleanup
  • Values on silkscreen
  • Jack holes are 2 mm
  • Guard ring connected to GND
  • Manufacturing data for [jlcpcb.com] included

Circuit diagram

Circuit diagram of Davac 4.1

PCB

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

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


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.

Linux

I'm pretty sure you can use ft232r_prog. But I have no experiences with it. If you try it, please let me (OK1ZIA) know, I will update this information.

Windows

MProg with loaded Davac4.ept

Under Windows, use MProg. Download File:Davac4.ept and open it in MProg. Note on Windows XP you need D2XX drivers; on newer versions they are installed automatically.

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

Install USB drivers

Linux

You have nothing to do, It will work automatically. Only on specific distributions you may have to set permissions to USB device, which is normally done by udev script.

Windows

Zadig with Davac4

Under Windows 7 or newer, use Zadig. On XP use 2.2.

Click Options, List All Devices.

Keep libusbK and press Install Driver.

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