kodak80 blog

[LarryL]

Hi @kodak80

I let some of your ISA PCB v1.3 be made in China for my ATX Board.
I am struggling a bit with sourcing the SMD battery holder for the RTC
Do you evtl have a source or a vendor/ part number for a suitable component?
All I could find locally here in Germany are much wider than the 20mm on the board

I assume, that the battery is a CR2032, or do you use something else?

Another question: the two holes on both sides of the cartridge connector are for a bracket, right?
I could not find a suitable bracket with latches with distance of approx 76mm - at least not for keystone brackets
Any other special bracket, you used for the design?

Cheers
Michael

[kodak80]

Hi @kodak80

I let some of your ISA PCB v1.3 be made in China for my ATX Board.
I am struggling a bit with sourcing the SMD battery holder for the RTC
Do you evtl have a source or a vendor/ part number for a suitable component?
All I could find locally here in Germany are much wider than the 20mm on the board

I assume, that the battery is a CR2032, or do you use something else?

Another question: the two holes on both sides of the cartridge connector are for a bracket, right?
I could not find a suitable bracket with latches with distance of approx 76mm - at least not for keystone brackets
Any other special bracket, you used for the design?

Cheers
Michael

The battery holder is for a CR1220 coin battery. Similar to these ones:https://www.ebay.de/itm/201945271987

The bracket holes were just a convenient location so there is no standard bracket to my knowledge. I could not find any information on standard ISA keystone brackets. Someone will need to 3D design and print a bracket to fit the adapter. If there are standard brackets then I can maybe update the design to move the mounting holes.

[LarryL]

The battery holder is for a CR1220 coin battery. Similar to these ones:https://www.ebay.de/itm/201945271987

The bracket holes were just a convenient location so there is no standard bracket to my knowledge. I could not find any information on standard ISA keystone brackets. Someone will need to 3D design and print a bracket to fit the adapter. If there are standard brackets then I can maybe update the design to move the mounting holes.

Thanks, found the battery holder

You are right with the bracket - there is no standard one with a suitable opening
Idea was to drill and file one in a existing „closed“ bracket like the Keystone 9203
https://www.mouser.de/ProductDetail/Ke ... azwQ%3D%3D
But maybe it is easier to 3D print something

[kodak80]

So, I was wondering about using Bluetooth for outputting audio from an ST. So, I created an adapter for the YM2149 chip which split the 3 analogue audio channels into stereo and then fed this into a Bluetooth emitter...

YM2149 Bluetooth adapter.jpg

An hey presto, I now have the audio outputting on various Bluetooth enabled audio devices.

[exxos]

:bravo:

[HigashiJun]

Cool !

[ijor]

Cool indeed! :)

[DoG]

Yay! Tower :D But very nice indeed.

[kodak80]

It works...

IMG_0948.jpg

IMG_0946.jpg

I have an original Mastersound II Cartridge and worked with an old schematic I found on gossuin.be

It is the same size as the original.

[exxos]

Oh wow. Beat me to it . :D

I thought it had more bits inside it.. but I've not opened it for like 30+ years..