Hedghog PSC is a homebrew programmable standards converter. From a 625 or 525 line input it is capable of generating a wide range of Television line standards. It is coupled with a versatile programmable modulator that uses two MC44BS373.
On this page you will find the files required to build it.
All material including Downloads on these pages are provided 'as is' without warranty of any kind, either expressed or implied.
FEATURES OF CONVERTER
The converter can generate the following
FEATURES OF MODULATOR
28.5 to 56.25 MHz step 15.625 KHz
56.25 to 112.5 MHz step 31.250 KHz
112.5 to 225 MHz step 62.500 KHz
225 to 450 MHz step 125 KHz
450 to 900 MHz step 250 KHz
All Resistors, Capacitors and Inductors are 0805 size.
All Capacitors are ceramic multilayer types.
Where given manufacturers part numbers are given as examples alternative parts may also suit.
The PCB is double sided and measures 100 mm X 89.5 mm.
Link to uploaded Gerber files on PCBWay.
July 2021 I have updated the FPGA and PIC programming files.
The update allows the converter to convert from 525 lines as well as 625 lines. It automatically detects the input standard. Also included in the update are some test patterns. The patterns are applied before the converter so are available on all output standards.
Component layout bottom (.jpg)
Front and rear panel legends (.pdf)
Microcontroller program file (.hex)