Preamplifier 5.1 on 3 x PGA2311

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Hello

After a long time I decided to upgrade my project to 3 x PGA2311 5.1

It adds a short description

Description of functionality:



- Volume adjustment -95.5dB to + 31.5dB with a step of 0.5dB

- Volume control with remote control and encoder

- Balance adjustment of all channels independently (remote control and encoder control)

- Mute function (remote control)

-ON / OFF (remote control and switch control)

- Memorizing settings after switching off

- Real time clock + date based on PCF8583

-Temperature thermal protection, eg fans for cooling power amplifiers based on DS18B20

- Compact design, which also allows you to freely apply in an existing amplifier.

- Cooperation with popular 2x16 and 2x24 characters, with a driver compatible with HD44780.

-Two Relay Outputs enabling power transformer transformer power supply and speaker or color protection

- A separate power supply board

- RC5 pilot (each Philips)

-LED signaling ON / OFF


Added features:

- I2c controlled input audio on PCF8574 (3 stereo + 5.1 inputs)

YouTube


The system is tested and tested, I have one ready without the selector in the amplifier, probably the fifth year and the second with the selector on the table for some 3 - 4 months
I am waiting for your opinions
 

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