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If you do not wish to use the external trigger at all, simply solder the cathode lead (with the line) to the square pad on the right, closest to the label D9. You can leave out R172 and the Ext Trig Mod header.
LFO MOD: for C36 instead of 1uf
1. original 1uF LFO speed
2. slow 11uF LFO speed
3. slow LFO in situation
Tipp: use a 10uf bipolar electrolyt cap
Case:
use a acryl plate for bottom,
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