Multiple midi outs to sync instruments using a midi beat clock

Other Hardware Audio
1

Hi everyone,

I'm currently working on a midi beat clock project. Basically, what I want to do is, to sync multiple instruments with a midi beat clock.

So far, everything works fine for one midi out. My setup generates a proper UART-Signal sending clock (0xF8), start (0xfa), stop(0xfc) and continue(0xfb) when needed. Tests on a midi interface worked fine.

Now, I want to have multiple (let's say 4) midi outs in parallel (with the MIDI/UART-signal being generated by one I/O pin), to sync 4 instruments and I am not sure how to solve this issue on the electronic side of things.

While looking online, I came across this forum post from the Arduino forum here.
However, I'm not sure if I got the idea right:

If i do get the idea behind of the follow up links in that post (this one) correctly, it looks like I could use a simple PNP Transistor to drive the signal for the data line to the midi out?

If so, can I achieve that by using the current MIDI/UART-signal and how?

If not, do you guys have another idea on how to do that?

Thank you so much for your help!

Best regards,
Tobi

2

If i do get the idea behind of the follow up links in that post (this one) correctly, it looks like I could use a simple PNP Transistor to drive the signal for the data line to the midi out?

Yes.

If so, can I achieve that by using the current MIDI/UART-signal and how?

Simply duplicate that circuit four times and feed it from the same pin. Note you only need the output part part of the circuit, the bit that goes from pin1 the TX pin.

You don’t need the opto part or the MIDI output.

I think there is a mistake on that diagram and the MIDI connectors are drawn looking at the front of the pins not the back.