I was hoping to not need to post just yet but eagle is failing on me and I cant seem to get a view with the traces, maybe im missing something here but it tells me there is errors?
Today I completed the kick drum so I set up my SQ1 to trigger and connected directly a set of headphones to the BD out on the main board and had a listen.
First I noticed the noise from the noise circuit was leaking really loudly and constantly(as if it had a direct thru from the circuit to the BD out) , I removed the ICs from the noise circuit and carried on with the test to find I was only hearing the attack portion of the kick. The Attack pot works, the decay I can hear is working and the volume works.
I've checked all my parts, soldering, bridges, swapped out the 3 ICs and wanting to (bloody Eagle!!) continuity check the traces.
So, I guess my question is how do I use eagle to show the traces? And what are my likely areas in the circuit to be searching?
Also I presume the Noise circuit is feeding all noise parts on the board? Why would the noise be leaking so drastic?
I should add all the transistors have been tested prior to soldering.
Thanks
[SOLVED] Kick VCO not sounding
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Last edited by serum114 on Apr 13th, '17, 15:47, edited 1 time in total.
**UPDATE**
All traces checked as per the layout.pdf's, all are good.
Im wondering if it is possible to test the voices fully as I build each circuit?
My method was to wire my headphones to the BD pad and GND pad on the main board and trigger the voice using my SQ1 wired to TRIG and the GND pad. All that seemed to trigger was the attack part. All the pots done something except for the TUNE control.
At this stage all I have built is the PSU, NOISE and BD circuits. Whilst testing, with the NOISE ICs seated, the NOISE was open/constant through the BD output, I removed these to carry on my tests. Also I wired my pots to the board for easy removal.
Is there more sections of the board that need completing before I can test the sounds (BD) completely? where is the noise trigged from? Why is it all the way open?
Thanks
All traces checked as per the layout.pdf's, all are good.
Im wondering if it is possible to test the voices fully as I build each circuit?
My method was to wire my headphones to the BD pad and GND pad on the main board and trigger the voice using my SQ1 wired to TRIG and the GND pad. All that seemed to trigger was the attack part. All the pots done something except for the TUNE control.
At this stage all I have built is the PSU, NOISE and BD circuits. Whilst testing, with the NOISE ICs seated, the NOISE was open/constant through the BD output, I removed these to carry on my tests. Also I wired my pots to the board for easy removal.
Is there more sections of the board that need completing before I can test the sounds (BD) completely? where is the noise trigged from? Why is it all the way open?
Thanks
As suspected it was my test procedure. I was lacking power going to the ACC input of the voice so I ran 5v from the board to the ACC input.