Domesday Duplicator

The Domesday Duplicator is a USB 3.0 hardware solution for capturing LaserDisc RF at 40msps 10-bit suitable for use capturing many FM RF based formats as well.

Its documentation originally lived on Domesday86.com project pages but is now moved onto GitHub.

[!WARNING]
Currently the Windows application has potential for sample dropouts, only Linux/MacOS is recommended for high value capturing.

Docs

• Harry's Current Cross-platform Usage Docs

• How to Order a Domesday Duplicator (DdD) for Dummies

• Windows 10 Firmware Package

• Windows 10 Firmware & USB Driver Setup

• Simons DomesDay Duplicator Wiki - Hardware & Software Development

• FLAC RF Data Compression Guide

Physical Gain Control

0000 is 1-2-3-4 dips, In orientation to bottom numbers up is 1 and down is 0.

All selected in this up position is 1111 or 2.02 Minimum Gain When dip’s 2-3-4 are down it's 1000 this is the maximum gain of 8.5, the table below shows all possible positions.

Configuration	Switch Position	Gain
15	1111	2.02
7	0111	2.17
11	1011	2.27
13	1101	2.45
3	0011	2.54
14	1110	2.59
5	0101	2.79
6	0110	3.02
9	1001	3.04
10	1010	3.34
1	0001	3.8
12	1100	4
2	0010	4.4
4	0100	6
8	1000	8.5

Software

The software is a GUI based capture tool, with a serial control interface for LaserDisc players.

Linux Install / MacOS Builds / Windows Builds

[!TIP]
Enable RMS Measurement to have a live readout.

Enable stop captures on sequence mistmach if your seeing dropped samples with your setup.

Dark mode on windows can be done via:

DomesdayDuplicator.exe --style fusion

Linux Software Install

For Ubuntu 20.2 & Linux Mint 22.3

Install Dependency's

sudo apt install --no-install-recommends git cmake libgl-dev qt6-base-dev libqt6serialport6-dev libusb-1.0-0-dev qt6-multimedia-dev build-essential

&

sudo apt install libqt5serialport5-dev

Download The Software

mkdir ~/github
cd ~/github
git clone https://github.com/simoninns/DomesdayDuplicator

Build The Software

cd ~/github/DomesdayDuplicator/Linux-Application
sudo cmake -DCMAKE_BUILD_TYPE=RelWithDebInfo .
sudo make -j8
sudo make install

USB Permissions

Make a file called called 40-domesdayduplicator.rules inside of /etc/udev/rules.d directory after opening it as a root user.

# 1d50:603b - Domesday Duplicator
SUBSYSTEM=="usb", ATTRS{idVendor}=="1d50", ATTRS{idProduct}=="603b", MODE="0666"

Reload Rules

sudo udevadm control --reload-rules

Lastly take ownership of the files directly as a user

Replace USER with your local username.

sudo chown -R USER ~/github/DomesdayDuplicator

Then run the DdD App

DomesdayDuplicator &

If you get Segmentation fault (core dumped) try using:

sudo strace DomesdayDuplicator

Desktop Icon In Linux

sudo xdg-icon-resource install --size 256 --novendor ~/github/DomesdayDuplicator/Linux-Application/DomesdayDuplicator/Graphics/ApplicationIcon/DomesdayDuplicator_256x256.png

Desktop File (App Icon Fix)

desktop-file-install