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Re: [GUIDE] Direct MIDI IO for ST and Amiga Cores
Posted: Mon Apr 12, 2021 4:44 pm
by netizensmith
Hi all,
When using my real Amiga 600 I had this config:
A600->Serial Midi Interface -> midi to USB cable
USB end plugged into a client port of a powered USB hub
Akai MPK Mini controller also plugged into a client port of USB hub
iPad pro connected to the hub using the host USB cable i.e. the iPad was the host.
This worked great!
Now on the Mister I can wire the Akai, ipad and hub together no problem but the problem is I now essentially have an Amiga with a USB type A host socket that I need to connect to a hub that also has a USB type A socket and I know that's something you can't do. Any ideas how to get this all talking together?
Re: [GUIDE] Direct MIDI IO for ST and Amiga Cores
Posted: Tue Sep 28, 2021 6:07 am
by Zarkov
Should I disconnect the direct midi io box from legacypixels from the user port if I load cores other than ao486 etc? Any harm leaving it connected?
Re: [GUIDE] Direct MIDI IO for ST and Amiga Cores
Posted: Wed Mar 16, 2022 6:26 pm
by mobith
Zarkov wrote: ↑Tue Sep 28, 2021 6:07 am
Should I disconnect the direct midi io box from legacypixels from the user port if I load cores other than ao486 etc? Any harm leaving it connected?
I haven't seen the schematic but I imagine there's a buffer and opto-isolator on the MIDI breakout board, so I doubt you can break it
Re: [GUIDE] Direct MIDI IO for ST and Amiga Cores
Posted: Wed Mar 16, 2022 7:54 pm
by bnz99
Just realized I have never posted my DIY midi pcb in this forum:
https://github.com/bzeiss/mister-pcbs/wiki/Midi-PCB
Re: [GUIDE] Direct MIDI IO for ST and Amiga Cores
Posted: Mon Mar 28, 2022 6:57 pm
by mobith
Ah nice - you made one with the same footprint as the nano
Do you have any spare raw pcbs available please?
Re: [GUIDE] Direct MIDI IO for ST and Amiga Cores
Posted: Mon Mar 28, 2022 7:09 pm
by mobith
- misterfpga_midi_shield.png (4.02 MiB) Viewed 5070 times
I had an arduino midi shield lying around so lashed that up for testing!
The optoisolator is connected to the shield_5V pin and so this must be wired to the nano_3V3 header to avoid over-voltage on the fpga.
JP7_1 = Rx
JP7_2 = Tx
Re: [GUIDE] Direct MIDI IO for ST and Amiga Cores
Posted: Tue Mar 29, 2022 5:42 pm
by bnz99
mobith wrote: ↑Mon Mar 28, 2022 6:57 pm
Ah nice - you made one with the same footprint as the nano
Do you have any spare raw pcbs available please?
Are you in the EU? I have a few, but at some point, I want to add jlcpcb assembly files for the smd parts of the board. That way, only the usb connector and the midi connectors would remain to be soldered. For outside the EU, it would probably be cheaper to order the pcbs fresh.
Re: [GUIDE] Direct MIDI IO for ST and Amiga Cores
Posted: Wed Mar 30, 2022 4:32 am
by kathleen
Hi @bnz99
I from EU (Belgium to be precise) and I'd be interested by one card if any available.
No need to get the components soldered, my friend is electronic engineer so he'll do the job for me.
You can PM me to finalize the deal.
Thank you so much in advance.
Re: [GUIDE] Direct MIDI IO for ST and Amiga Cores
Posted: Thu Apr 07, 2022 12:33 pm
by mobith
bnz99 wrote: ↑Tue Mar 29, 2022 5:42 pm
mobith wrote: ↑Mon Mar 28, 2022 6:57 pm
Ah nice - you made one with the same footprint as the nano
Do you have any spare raw pcbs available please?
Are you in the EU? I have a few, but at some point, I want to add jlcpcb assembly files for the smd parts of the board. That way, only the usb connector and the midi connectors would remain to be soldered. For outside the EU, it would probably be cheaper to order the pcbs fresh.
I'm in the UK so almost
No worries about the SMD - I kinda prefer SMD soldering these days (as long as it's not the realllly small stuff)
Re: [GUIDE] Direct MIDI IO for ST and Amiga Cores
Posted: Thu Apr 07, 2022 1:32 pm
by bnz99
You may want to contact Nat from https://misterfpga.co.uk. He wanted to build a few. Personally, I'm not a seller and don't plan to be. So I don't want to deal with declaration forms and whatnot. It's just not fun for me 
Re: [GUIDE] Direct MIDI IO for ST and Amiga Cores
Posted: Thu Apr 07, 2022 2:31 pm
by kathleen
I'd like to thank you, @bnz99 I've received the PCB today. Cannot wait to get it assembled by my friend in order to use it on my Mister.
Thank again !
Re: [GUIDE] Direct MIDI IO for ST and Amiga Cores
Posted: Fri Apr 08, 2022 6:40 pm
by bnz99
Glad that it arrived. So I received a package from JLCPCB today with the SMD parts preassembled and I have tested it on the Atari ST core with Cubase Score and it worked fine. I have pushed that update to the github project so that anyone who wants this can order this board directly with SMD parts preassembled from JLCPCB. It's only three through-hole parts (3x midi din5 connectors + one usb connector) left to solder that way.
Re: [GUIDE] Direct MIDI IO for ST and Amiga Cores
Posted: Tue Apr 12, 2022 8:50 pm
by mobith
bnz99 wrote: ↑Thu Apr 07, 2022 1:32 pm
You may want to contact Nat from https://misterfpga.co.uk. He wanted to build a few. Personally, I'm not a seller and don't plan to be. So I don't want to deal with declaration forms and whatnot. It's just not fun for me
All good! I ordered 5 bare pcbs - thanks for sharing the design!
PS: If anyone wants a bare pcb or a built one I will have three spare I think
Re: [GUIDE] Direct MIDI IO for ST and Amiga Cores
Posted: Tue May 03, 2022 1:35 am
by JimBobMcGee
Made a Cubase 3 demonstration video featuring the new Dongle feature in the main Atari ST Core. Used an Akai S3200XL as the midi sound source for this
https://youtu.be/WiYBDQQIgEM