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  Thursday, 20 May 2021
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Hello,i'm new here !!
I try to find a soluce to take a LED light bpm as MTC with an arduino, but i don't really know the process to do it.
I saw how to use some library very simple on Arduino to send MTC with 0xF8 code, but is it all enougth to do it?
I mean, juste send 0xF8 when I detect the flashing red LED each beat ?
If some one can help me ;-).
I want it beacause I really don't want to open my Zoom R24 and make wire in it.
My functionality is detect when I start recording with the Zoom R24 and start sequencer at same time.

Thank a lot for this Forum
BassMan
6 months ago
·
#9114
Accepted Answer
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To be clear, a MIDI message of 0xF8 is a MIDI Clock message, not MIDI Time Code. MIDI Clock messages are a measure of musical time must be sent 24 times per Quarter note. That timing stretches, based on tempo. On the other hand, MIDI Time Code is a measure of hours, minutes, seconds, and frames (of film or video).

If you have a flashing light for tempo, say at 1/4 notes, you would have to measure the timing between the flashes, then send 24 evenly-spaced 0xF8 MIDI Clock messages between each time the light flashes. Then when you start to record or play you have to send a Start message. Then there are Stop and Continue messages as part of the total mechanism.

Mike.
6 months ago
·
#9114
Accepted Answer
1
Votes
Undo
To be clear, a MIDI message of 0xF8 is a MIDI Clock message, not MIDI Time Code. MIDI Clock messages are a measure of musical time must be sent 24 times per Quarter note. That timing stretches, based on tempo. On the other hand, MIDI Time Code is a measure of hours, minutes, seconds, and frames (of film or video).

If you have a flashing light for tempo, say at 1/4 notes, you would have to measure the timing between the flashes, then send 24 evenly-spaced 0xF8 MIDI Clock messages between each time the light flashes. Then when you start to record or play you have to send a Start message. Then there are Stop and Continue messages as part of the total mechanism.

Mike.
JohnG changed the title from Need help to synchrinize Zoom R24 with midi sequencer with an Arduino to Need help to synchronise Zoom R24 with midi sequencer with an Arduino — 6 months ago
dev selected the reply #9114 as the answer for this post — 4 months ago
4 months ago
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#9693
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Ok, thank's a lot for your time to reply.
If I follow your mind :
1- measure the time between two flashes from led
2- divide it by 24
3- wait the third flash
4- send 0xF8 24 times to the midi port for each detected flash from led

I wil try some code to do that
I send news here to tell my tests.

Thank a lot again Mike
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