Simple dual attenuverter module (2HP - FR4 panel)
A simple (emphasis on simple) dual attenuverter for your Eurorack synth.
If you're after hyper-precision, zero offsetting and stuff like that then you're in the wrong place - however, if you want a way to turn those signals upside down and back again then you're in the right place.
Eagle-eyed viewers will notice that there are two boards - the 'main' board contains the controls and is connected to a daughterboard via a right-angle header. The module is 39mm deep from the rear face of the panel to the rear face of the power connector - add an extra 5-6mm to account for the power connector.
If you're planning to fit this in a skiff, _please_ make sure that your case is deep enough. Since the only active component on board is an op-amp, current consumption is suitably low - figure on 10mA max on both +12 and -12.
The op-amp as-supplied won't go rail-to-rail but the module will happily handle signals up to 20V p-p (-10V -> +10V); since the op-amp is a through-hole component, you can change it for something else if you wish, just make sure that it is pin-compatible with the TL072/082 series.
What's even better is that it'll fit behind a 2HP panel so it needn't necessarily take up much space either - a panel is provided, and it is fabricated from 1.6mm FR4 (PCB material)