e-licktronic Forum

Hi there, For the 4049 you have to use the one from the mouser BOM that is a Texas instrument CD4049 UBE . https://eu.mouser.com/ProductDetail/595-CD4049UBE Cause this Hex inverter is powered with the +15V rail to drive the 4051 and has to be unbuffered Idem for the 4051 , it has to be this one http...

Now check following point:
-With a scope check that trig signal is on Q40 Collector when sequencer is running
-With a scope check that the oscillator circuit works on IC12 pin1
-Check with MM that IC12 is well powered (+15V, -15V)

Please post the results

Please check power supply first, if it was working and nothing "burn" maybe you got an issue with your power supply

Hi there,

The issue could come from Accent line, scope the accent signal, it is common to all drum, and post a picture of what you get

Hi there,

What individual out come from this HHHmmmm ? it seems to be a Tom ?

Try to swap your working uC with the one on the Nava that doesn't I did that: I swapped the EEprom with the one from my working Nava and nothing changed. I put the EEprom from the Bad Nava into the working Nava and it works just fine. So it's not the EEprom right? What you swap it is the microcontr...

Try to swap your working uC with the one on the Nava that doesn't

For some reason pattern is defaulting/overwriting to length of 256, scl of 0, and all instruments on accent high for each step. So while I am programming a pattern it will suddenly become length of 256, scl of 0, and all instruments on accent high for each step. Patterns are not saving properly. If...

Thank you Vincent! I hope somebody takes this into account and maybe develops such a mod! F. I designed a simple board that fit 8x 24LC1025. (Eagle file join to the message) To connect to IC115 simply put a IC socket with long legs ;) https://scontent-cdg2-1.xx.fbcdn.net/v/t39.30808-6/218741770_101...

* Replace the eeprom in the Nava with a larger one. Don't know if those exist, something I would have to look up. This would be interesting to investigate... +1 F. Hi there, The actual Nava EEprom is a 1024kb Serial I2C EEprom that is actually the biggest size of PDIP8 I2C EEprom. ST Microelectroni...

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