For some time already pcbs for v4 seq aren’t available from smashTV, i’ve tried to contact him via email and contact form several time but never got any reply.
Could someone advise me on a good way to start that project? I mean the only option is to stick with v3 this days?
Go for STM32F4, yes! This will enable you to upgrade to the SEQV4+, when it is ready.
All MIDIbox admins have day time jobs (TK, SmashTV, …). All they are doing for us is a big gift, so best to stay chilled all the time - best things take time!
BTW… Is it possible with STM32F4 core to use single midi in|out module with addition of quad2c midi module to get 2 midi ins and 6 (or even more?) midi outs? I mean I won’t need more then 2 midi ins anyway… but more midiouts is better not to use any kind of midi router.
Yes, that is possible, you can connect the quad midi iic board to the J4A IIC port and still use one MBHP_MIDI_IO module to gain two base MIDI INs/OUTs (connect this board to J11E).
(I´ve 3 base MIDI outs on an old STM32 board SEQV4, and 4 IIC outs, it is great, so many MIDI cables! :-))
I need his answer anyway, because my country is not in a list of possible shipment and payment via paypal, so even to order other PCB’s or kits i need to discuss this matters with him.
Understood - i just facebook messaged him asking for a status update. Please kindly note, that his service is a volunarily one, where he earns next-to-nothing - so… stay calm