ADSR exponential envelope generator with range switch (4HP - partial build)

This is a PCB/panel set for the ADSR envelope generator module.

All surface-mount components have been pre-soldered - it is up to you to provide the necessary through-hole componentry to complete the build. These are updated boards which have been fabricated by a PCB assembly service - the hand-built modules are now sold out.

The following will be required:

• 1x Eurorack power header (2x5) 🔗- the chevron/line on the rear silkscreen corresponds to -12V
• 4x Alpha RK097N pots (or compatible) - the attack, decay and release pots should be 1M audio taper (A1M) and the sustain pot should be 50k or 100k linear taper (B50k or B100k)
  
• 1x DailyWell DW-1 (ON-ON) switch - these switches have solder-pin connectors at 2.54mm centres, and the footprint reflects this. Whilst you could fit other types, you'd need to get creative with wiring.
• 2x PJ301M-12 (aka THONKICONN) jacks (or compatible)
• 1x 3mm LED - I recommend Vishay TLHR4400🔗 LEDs, as they have a voltage drop of only 2V.
  
• 4x knobs to suit - one for each pot.
  
• Electrolytic and film capacitors with the following values, with a rated voltage of at least 25V. 
  
  • C2, C4 - 10uF
    
  • C6 - 1uF or 2.2uF electrolytic ('long' range decay capacitor - 16V rating is adequate)
  • C5 - 100-330nF film ('short' range decay capacitor; lower capacitance means faster decay)
  • C9, C10 - 10nF film
• Power cable and mounting hardware (M3x6 machine screws will suffice) 

US CUSTOMERS PLEASE NOTE: since no additional assembly is done, the country of origin of these boards is China. Complete modules will have the COO listed as the United Kingdom as I do all the necessary assembly and testing prior to shipping.