video upload by Ventla
"available on https://ventla.bandcamp.com/merch/vvr...
vvronger is an analog-digital hybrid monophonic mini (more mini than minimoog) synthesizer with csg -- complex sound generator -- synthesis
vvronger incorporates legendary pedigree sn76477(n) sound chip manufactured by us of a's finest texas instruments in 1978 which used in various arcade video games, pinball machines and electronic toys released on that era such as space invaders (taito), sheriff (nintendo), space encounters (midway), vanguard (snk), sharpshooter (game plan), locomotion (zaccaria), sound fx machine (remco), muson synthesizer (mego) et cetera
layout designed and assembled by me"

specifications

b. these could maybe work as kinda like an on-off mixer for a sound sources or as an envelope selector
c. seems to related with a duration of one-shot function
d. probably defines an one-shot duration range
e. probably some lfo-related component
f. vco-related component
g. sorta lfo adjustment thingy
h. the component we usually hardly use
i. pitch adjustment thingy
j. a mysterious component. hardly use
k. a switch to convert vco sources (internal <-> external)
l. a switch to convert sound envelopes (constant <-> one-shot)
m. i swear this is an one-shot trigger button. also works as sorta like a mute button sometimes
n. cool slide switch somehow i settled
o. external vco input jack. important component for a decent musical usage. vvronger has no gate input jack just in case
p. noise clock-related component
q. sorta noise filter
r. also a noise filter-esque component. also maybe works as sorta noise gate
s. definitely perhaps decay adjustment component
t. attack adjustment
u. decay adjustment
v. works as some kind of tone colour control section
w. cool 9v batt snap