Jump to content

Single LCD from multiple sources... can this be done


Digineural

Recommended Posts

I'm not sure if this can be done easily but I'm in the process of integrating my MB808 and Zoom MRT3 into the same box. However, last week I thought about digging out my old edrum modules and adding a trigger system. I really think having multiple 2x16 LCDs is ridiculous so is there a way to easily switch between the 2 LCD buses and select which bus controls the LCD at any given moment?

Link to comment
Share on other sites

Not easily, but it's possible.

If both devices are MIDIbox based, it might be easier to get one to send LCD commands through the other (maybe via CAN bus, or I2C or even MIDI).

Having them share the LCD bus is difficult to get right. Both devices would have to correctly handle when access to the LCD is given/taken, again if this was MIDIbox for both, they'd have to switch their ports to hi-Z when they don't have access... so there'd be a lot of coding to do... well, I could go on in great detail how I'd do it but I'll just give the short answer - it's possible, but there are easier ways to achieve the same thing.

If they are not both MIDIbox devices (i.e. you can't write code for both things you want to share the LCD), then it isn't possible - each device would assume it has sole access and wouldn't play nice, wouldn't refresh when switched to, etc.

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Loading...
×
×
  • Create New...