Avalon Harmonics LOGx (Built Module)

Dual logic gate with swappable IC.

This article is for the fully built Eurorack module with preinstalled logic chip.

Includes:
1x Avalon Harmonics LOGx Module with preinstalled logic chip
1x 15cm Eurorack Power Cable
2x 3mm Knurlies

Built and tested by Thorinair.

LOGx provides two independent logic gates. The types of gates depend on the chip inserted on the PCB, meaning the module can have AND, OR, XOR, etc. gates. The circuit accepts the standard 4000-series CMOS logic ICs. The module works great when driven by gate signals, allowing you to do logical operations on them. For instance, outputting a gate signal when both inputs are high (AND gate), or outputting a gate signal when only one or both inputs are high (OR gate).

The gates can also be driven at audio rates, allowing it to be used to perform operations between different audio sources and waveforms. Feeding them two different VCO signals can create various interesting and unexpected interactions in sound, usually sounding quite low-fi due to the square output.

The gates are polarity protected and will also not get damaged by any eurorack voltage levels. Anything above around +1V is considered as high on the input.

Each of the two gates also have a status LED which signifies whether the output is high or low. When high, the output is at +5V.

Website Page: https://avalon-harmonics.com/module/LOGx/
ModularGrid Page: https://modulargrid.net/e/avalon-harmonics-logx
GitHub BOM & Source: https://github.com/Thorinair/Avalon-Harmonics/tree/master/Modules/LOGx

Features:
- Dual logic gates
- Gates can be changed by swapping the IC
- Voltage protected inputs
- Status LEDs for output
- Wrong polarity protection
- Size: 3HP
- Depth: 36mm
- Power: +12V: 5mA, -12V: 0mA