Post a picture up of the patch so we are sure we are on the same page.
Thought an Video would be easier so there should be a youtube link to a video i just took quickly on my phone, hopefully this should make the issue clearer
Cheers
If I remember, I will hook up mine the same in the morning and confirm the operation.
Have you tried any of the other outputs on the ADSR?
I am guessing you donât have a scope to check the envelope?
Checked the adsr with a scope and was acting normally, definitely an issue with the vca on the filter; just not sure where and how to solve it unfortunately
Yep should work as expected âŚ
Yes thought as much, having a poke through now to see if the issue can be sourced, thanks for the help 
So as my first project I would like to build a fully functional ADSR envelope generator. I plan to use it with a VCO powered by an arduino nano. Although am a beginner to electronic hardware and component so I was wondering if the pots on mini ADSR could be replaced with these? uxcell 5 Pcs 10K OHM Linear Taper Rotary Potentiometer 10KB B10K Pot Zinc Plating with 13mm Shaft https://www.amazon.com/dp/B01DKCUVMQ/ref=cm_sw_r_cp_api_glt_fabc_GKMK45E5KQ99KC61BBQJ?psc=1
Pls and thank you for any help!!^^
They are the right value, but they will not fit on the footprint on the board. You will need the 9mm alpha pots for that. Also see: 1157 MINI ADSR Module
Welcome in the forum 
Yes i think itâs good, itâs also B10K in the BOM
stripboard ⌠or pcb build ? (for solder point pot)
As pointed out above, if youâre using the PCB kit itâs designed for 9 mm vertical PCB pots, e.g. Alpha RD901F-40, Alps RK09L1140, or equivalent.
but if youâre using your own front panel, or not mounting it in the standard way, you can use any linear 10k potentiometers (B10K), and solder in wires instead.
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It can alter the pitch of the VCO, but more typically an envelope generator is used in conjunction with a VCA and/or a VCF.
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Hey Guys!
I did a bad thing and got my positive and negative voltages switched and popped the 10-ohm resistor on the negative supply. Did this break the module? or would I be able to put in a new resistor and have it work the same? It didnât seem to do much to any of the other components but I wanted to check before I plugged it back in. Thanks!!
Thatâs âwhat the 10R resistor is forâ â though I think if you want a fuse you should use a fuse. Anyway, you can hope the resistor saved the other components and you just need to replace it. If it didnât, you probably wonât find out until you try powering it up again.
I donât know what you did, if the module was working and then you disconnected it and reconnected it wrong then you should be good to go with luck. But if it happened the first time you applied power to it, check carefully before plugging it in again to make sure the polarity is right, on all the ICs, and that there are no shorts.
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awesome! I figured as much. I was wiring up a new power supply and had the wires mixed up. Turned around and saw a big puff of magic smoke lol.
Thanks a bunch
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Yeah, not much you can do other than try it. If the EnvGen chip is toast you can get another from the druid.
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Hot tip for young players - in most circuits, if youâve used IC sockets, you can power up the board without the ICs in their sockets - then you check the voltages on the supply pins of the IC sockets - if everything looks tip top, power down and put the ICs in. If not - check things carefully. This way, if you toast anything it will hopefully be something easy to replace like a regulator or an R or a C, not your fancy vintage or hard to get expensive ICs.
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Sorry for the super late response, but thanks for this trick itâs helped me a lot. I got the board working again and it seems to be fine now.
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Hi there, Iâve just hooked a MIDI keyboard to my Kosmo rack and found that Iâm having some trouble with the ADSR.
Iâve got Gate 1 from the Midimuso module going to the input on the ADSR module. The problem is that when I press a key on the keyboard the ADSR is only being triggered for a split second even when I hold the key down.
When I hook the gate from the Midimuso up to CV on a VCA and press and hold a key it triggers the VCA for the duration of the key press, so there is a continuous signal coming from it; measured with a multimeter itâs putting out 1.65 volts. Pressing and holding the trigger switch on the front of the ADSR module works fine so itâs definitely capable of sustained output.
Any troubleshooting ideas would be greatly appreciated.
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1.65 V is very low for a gate. The chip should be producing 5 V.
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Thank you so much, I traced the 5V coming from the Aux Gate pin on the chip and found that it was dropping off when it reached the TL074 on the daughterboard; replaced that chip and now itâs all working 100% 
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