Got it working with the Yeno SC-3000H (French version of the Sega SC-3000H).
It comes with an 8-pin DIN to SCART cable so I chopped off the SCART part and made up a new cable separating the audio out from the video.
On the Yeno 8-pin DIN side:
Pin 1 - mono audio
Pin 2 - ground
Pin 3 - composite sync
Pin 4 - used for RGB switch on SCART
Pin 5 - RGB switch
Pin 6 - red
Pin 7 - green
Pin 8 - blue
To simplify getting the audio out I terminated the 8-pin DIN cable to a DB9 socket (so it can't be plugged directly into the converter) - as I only need GND/R/G/B/H_SYNC on the CGA side there are a few unused pins that I can connect the audio to. This then connects to a DB9 plug - I separate audio L/R/GND out to a 3.5mm stereo socket, and then pass GND/R/G/B/H_SYNC on to another DB9 plug to connect to the converter.
I can re-use this converter for the CPC+ and the Enterprise to separate the audio more easily.
I tied unused CGA pins to ground:
CGA pin 1 - ground
CGA pin 2 - ground
CGA pin 3 - red
CGA pin 4 - green
CGA pin 5 - blue
CGA pin 6 - intensity -> ground
CGA pin 7 - ground
CGA pin 8 - H_SYNC -> composite SYNC from YENO
CGA pin 9 - V_SYNC -> ground
Image was slightly off-centre, shifted to the right. Tried auto-adjusting but didn't help.
In all of the RGB-to-SCART wiring diagrams they have some passive components on the R/G/B signals - there were none in the SCART plug so perhaps they're in the DIN plug? The colours looked okay ...
Brett
Now that's an idea!
One of the issues with the Amstrads when replacing the monitors (even their first PCs!) is the power is supplied by that monitor.
The CPC464 is fine as it's just a single 5V input but the CPC6128 needs also 12V for the 3" floppy drive. So one solution I'm trying is using a laptop-style PSU with an IDC socket output with 5V and 12V output. I've then connected a 2.1mm plug (5V) and socket (12V).
So one idea was to re-use that 12V into the converter, but I'm a little concerned about the waste heat generated by the 7805.
I did try replacing the 7805 with a Traco TSR 1-2450 switching converter but as the traces are on the top of the board it didn't work (I guess I could've tried to squeeze it under the board).
But it's an interesting idea to include a pass-through for the power supply - the Yeno uses a 9V power supply and uses a 7805 internally, so this would be useful.
It comes with an 8-pin DIN to SCART cable so I chopped off the SCART part and made up a new cable separating the audio out from the video.
On the Yeno 8-pin DIN side:
Pin 1 - mono audio
Pin 2 - ground
Pin 3 - composite sync
Pin 4 - used for RGB switch on SCART
Pin 5 - RGB switch
Pin 6 - red
Pin 7 - green
Pin 8 - blue
To simplify getting the audio out I terminated the 8-pin DIN cable to a DB9 socket (so it can't be plugged directly into the converter) - as I only need GND/R/G/B/H_SYNC on the CGA side there are a few unused pins that I can connect the audio to. This then connects to a DB9 plug - I separate audio L/R/GND out to a 3.5mm stereo socket, and then pass GND/R/G/B/H_SYNC on to another DB9 plug to connect to the converter.
I can re-use this converter for the CPC+ and the Enterprise to separate the audio more easily.
I tied unused CGA pins to ground:
CGA pin 1 - ground
CGA pin 2 - ground
CGA pin 3 - red
CGA pin 4 - green
CGA pin 5 - blue
CGA pin 6 - intensity -> ground
CGA pin 7 - ground
CGA pin 8 - H_SYNC -> composite SYNC from YENO
CGA pin 9 - V_SYNC -> ground
Image was slightly off-centre, shifted to the right. Tried auto-adjusting but didn't help.
In all of the RGB-to-SCART wiring diagrams they have some passive components on the R/G/B signals - there were none in the SCART plug so perhaps they're in the DIN plug? The colours looked okay ...
Brett
(28-12-2020, 11:07 AM)ChickenMan Wrote: Well done Brett, looks professionally done as well. I only use my unit on Microbees so I modified mine slightly to output 10.5v from the 10.5v power pack that runs the Converter and now as well as the Microbee. So I only need the one powerpack for both.
Now that's an idea!
One of the issues with the Amstrads when replacing the monitors (even their first PCs!) is the power is supplied by that monitor.
The CPC464 is fine as it's just a single 5V input but the CPC6128 needs also 12V for the 3" floppy drive. So one solution I'm trying is using a laptop-style PSU with an IDC socket output with 5V and 12V output. I've then connected a 2.1mm plug (5V) and socket (12V).
So one idea was to re-use that 12V into the converter, but I'm a little concerned about the waste heat generated by the 7805.
I did try replacing the 7805 with a Traco TSR 1-2450 switching converter but as the traces are on the top of the board it didn't work (I guess I could've tried to squeeze it under the board).
But it's an interesting idea to include a pass-through for the power supply - the Yeno uses a 9V power supply and uses a 7805 internally, so this would be useful.