Two channel CV Gate Attenuator for 3.3V/5V logic with an arrow indicator or voltmeter

video upload by DeftAudio

"An overview of the CV/Gate attenuator with various options. Available here: https://www.tindie.com/products/defta..."

"Deftaudio Two Channel CV Gate Attenuator for Eurorack
Two channel gain and max voltage passive attenuator with three options available:

Basic version, two channel with 3.3V, 5V limits, precise adjustment and LED control
Indicator version, two channel with 3.3V, 5V limits, precise adjustment with a vintage arrow indicator per channel
Voltmeter version, two channel with 3.3V, 5V limits, precise adjustment with a single digital LED voltmeter
Description:

This is simple and efficient board to adjust voltage level when interfacing between Eurorack gear and to the outside world. It's specifically important for Gate levels, which exceed typical voltage level of 3.3V or 5V and go all the way up to 12V. While modular gear typically designed to handle those voltages, other instruments such as sync or arp inputs on vintage synths may not have a protection at all.

This board designed in mind with three modes of operation which are not available in other products:

3.3V logic limit. This mode is protected by a Zener diode and meant for interfacing to 3.3 logic gear, such as microcontrollers, Arduino, Teensy, etc.
5V logic limit. This mode similarly has a Zener diode circuit for 5V logic of the majority synthesizers sync, arpeggiator and other various trigger inputs.
Attenuation. In this mode multi-turn potentiometer sets the attenuation ratio. While two other modes set the max voltage limit, in this mode the output voltage is linearly scaled down to the attenuation ratio set.
Purchasing options:

PCB only: Only PCB board is included, other parts, such as connectors, diodes, resistors and LEDs are sourced by a buyer.
DIY Kit: Comes with all parts including arrow indicators or digital voltmeter per selected option. Soldering is required.
Assembled board: this option is NOT planned at the moment."