e-licktronic Forum

JanneI

What's the current status for the second batch? Ready to be shipped or shipped already?

JanneI

Holy stupidity... I solved "shift always on" problem, but at the same time changed the ic9 from 74HC595N to 74HC165N. No wonder why those four parts suddenly didn't trigger.

JanneI

HD14584B changed to CD40106BE, no difference. :-/

JanneI

I'm having exactly same problem. All of these worked fine at first..

JanneI

...and the problem was bad solder joint at R44. Now shift button works as should and start&next button "rapid fire" problems disappeared.

JanneI

I measured the shift button, it's not +5v/0v, more like +0,5v/0v.

JanneI

C1 and C2 are indeed 22pf.

I even tried with all 3 new hc165n chips, no change in action.

Still the shift button is always on, start trigger shoots rapid fire, so does the next/scale button.

What should I check next?

Cheers,
Janne

JanneI

Thanks! I'll check them, but I'm pretty sure that I have the correct values. BTW, the sequencer works as should, so if the crystal was the problem shouldn't it affect the whole sequencer, timing etc? Because I can even program new patterns, but when I press one of the step buttons to add a step whil...

JanneI

Hi all, I just finished building Yocto and everything else works as should, but all the leds are on and I think that the "shift" button is on all the time. I swapped IC7 <-> IC8, and it's little different, but still not working. Sometimes with a longer push the "play" button work...

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