The face of a raw aluminum box seen close at an angle, ROBO and rungler engraved in the lower right. Six ribbed silver knobs in three pairs run down the left with a chrome toggle beside each pair, three more knobs sit at the upper right, and a small dark LED is near the top.

The Roboto and my Rungler in one box · One of a kind

Robo Rungler

Synth Available · 1 of 1

PedalPCB's Roboto and my Rungler in one aluminum box. The Roboto is their board for the Death By Audio Robot, an 8-bit pitch shifter, and the Rungler is two oscillators and a shift register that keep nudging each other's pitch. Nine knobs and three toggles, and no knob map on this one: it is played by ear.

TypeNoise synth, two boards in one box
ControlsNine knobs, three toggles and an LED on the face; in and out jacks and the DC jack on the top edge
CircuitPedalPCB Roboto and my own Rungler layout
Enclosure1590BB
Weight~1 lb
Power9V DC, center-negative barrel jack on the top edge
BuiltOctober 2026
StatusAvailable - one of a kind

$180 free shipping Email to Buy

What it does

The Rungler is a layout I give away on this site, after Rob Hordijk's: two 40106 oscillators and a CD4094 shift register, one clocking it and the other feeding it, with a stepped voltage from the register fed back into both pitches, so it wanders in patterns that almost repeat. The Roboto is PedalPCB's board for the Death By Audio Robot, which chops a signal into 8 bits and shifts it. Both live in one 1590BB.

Demo

Demo video coming soon.

Controls

Nine knobs and three toggles: Not mapped, on purpose. Turn things until it does something you like.
In and out: The two jacks on the top edge, beside the DC jack.

Circuit: Roboto (inspired by the Death By Audio Robot), with my own Rungler layout. Built, painted, and finished by Onion Madder as an original one-off - not affiliated with, endorsed by, or a clone of any commercial brand.