New features for 2025, 3 user selectable modes of operation.

1 - ultra fine:  18 steps push and release, 100 steps push and hold. This is the default for all new devices.

2 - fine: 18 steps push and release, 70 steps push and hold.

3 - continuous: 50 steps push and release,  push and hold for continuous.

Hi-Fi Remote Audio Volume Control Board with Volume, Audio Source Switching, Mute, and Amp Trigger Functions

Description:

New features for 2025, 3 user selectable modes of operation.

1 - ultra fine:  18 steps push and release, 100 steps push and hold. This is the default for all new devices.

2 - fine: 18 steps push and release, 70 steps push and hold.

3 - continuous: 50 steps push and release,  push and hold for continuous.

This listing is for the control board only. Additional soldering and fabrication may be required. Other components, such as input, mute, and trigger relays, may be necessary for full functionality. The motorized potentiometer is optional and can be used with any 5V motorized potentiometer.

The board is compatible with Sony remote codes:

• Power (2069)

• Volume Up (2066)

• Volume Down (2067)

• Volume Mute (2068)

Key Features:

• Built with high-quality components, including:

• Microchip PIC16F18323 microcontroller

• Vishay TSOP IR receiver

• Texas Instruments SN754410 motor driver

• Optional Bourns 100k motorized potentiometer

• Precise dual motor control with variable step rate:

• Single click: Increments/decrements volume in small steps.

• Rapid clicks: Increases/decreases volume at a faster rate.

• Intelligent features:

• Feedback via power LED for received instructions.

• Auto return to low volume upon shutdown for convenience.

Technical Notes:

• All relays are 5V and draw less than 40mA each.

• The source control port cannot directly drive relays. Please refer to the schematics for wiring details.

• The mute and trigger outputs can drive relays directly or any high-impedance trigger input where 5V is acceptable.
  

• Insulate unused wires / features before energizing.

Specifications:

• Power Supply: 7.5VDC - 16VDC

• Board Dimensions: 2.6" L x 2.3" W x 1.1" H (add 0.25" recommended mounting spacers)

• Sensor Dimensions: 0.8" L x 0.375" W x 0.230" H

• Potentiometer Dimensions: 2" L x 1.3" H (excluding shaft)

• Shaft Length: 0.590" (15mm)

• Shaft Diameter: 0.236" (6mm)

• Wire Length: 12" L

• Remote Control Dimensions: 7" L x 1.1" W x 0.72" H

Package Includes:

• 1 × Assembled and tested audio volume control board

• 1 × Wiring harness with pre-wired sensor

• 1 × Pre-programmed remote control (batteries not included; requires 2 AAA batteries)

Optional: If selected, 1 × Bourns motorized potentiometer is included.