Hi guys,
i've just succeed in outputting sound from my xoxbox, but the keyboard mode seems to behave strangely:
- when i press a key on the keyboard, a note is triggered with its own pitch and envelope.
each new pressed key triggers its own envelope except for the Low C key...
in this case an envelope is triggered once, and if i press other keys then, the env is not retrigged.
I've to wait few secondes for the C low note to finish to be enable to retrigg an env again.
Help is appreciate! thanks!
Keyboard Mode // ENV triggering problem // LOW C
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- mmm
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Re: Keyboard Mode // ENV triggering problem // LOW C
Please measure the voltage on IC18 pin 3 when pressing and releasing "low C"; do the same for pin 4 for "D".
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Re: Keyboard Mode // ENV triggering problem // LOW C
Hi,
on IC18:
4.95 V on pin 3, when "low C" pressed.
same on pin 4, when a D is pressed.
thanks!
on IC18:
4.95 V on pin 3, when "low C" pressed.
same on pin 4, when a D is pressed.
thanks!
- mmm
- Posts: 517
- Joined: Tue Apr 24, 2012 1:51 am
Re: Keyboard Mode // ENV triggering problem // LOW C
Does the voltage fall back to 0V upon release of the note button? This would be normal behaviour and indicate that IC18 is faulty.
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Re: Keyboard Mode // ENV triggering problem // LOW C
on release, voltage is dropping from 4,95V to 0V on pin 3 of IC 18.
- mmm
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Re: Keyboard Mode // ENV triggering problem // LOW C
This means that most likely IC18 is faulty. I've seen this particular fault (for IC16 to IC18) several times in the past.
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Re: Keyboard Mode // ENV triggering problem // LOW C
I've changed IC 16 to IC 18, now i've a got normal envelope on the C note.
Thanks again MMM!
Now, let's create a new post: MIDI IN / MIDI OUT and USB stuff seems not to work.. :/
Thanks again MMM!
Now, let's create a new post: MIDI IN / MIDI OUT and USB stuff seems not to work.. :/
Please be positive and constructive with your questions and comments.