volumer

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description:

Simple stand-by/volume control module based on attiny13 microcontroller. You can turn on/off any device (DIY subwoofer, amplifier or any other device) via switch or RC5 remote controller (more about RC5 >here<).
You can enter in programming mode by holding stand-by button for about 5 seconds.
Additionally, this simple module can control any motor-driven potentiometer (4V DC output, motor controlled by BA6218)

overview:



electronic schematic:



elements localization:



relay shot:



list of elements:

• B1 - bridge (I used tiny, 1,5A circular bridge)
• C1 - 1000uF/16V
• C2, C3 - 470uF/16V
• C4 - 4,7uF/16V
• C5, C6, C7 - 100nF
• D1 - 1N400x diode
• T1 - BC546B
• IC1 - L7805
• IC2 - Atmel ATtiny13 microcontroller (+ DIL8 holder)
• IC3 - Reversible motor driver BA6218
• PK1 - relay (I used HONGFA JQC-3FF relay, 5V DC / 230V AC - 10A)
• R1 - 220R
• R2, R4 - 4,7K
• R3 - 100R
• X1, X2, X3 - ARK2 connector, 5mm
• X4, X5 - goldpin connector
• TSOP1736 IR receiver (GND, +5V, DATA are marked on the 'elements localization')

the rest:

how it works?
It's very simple. After programming the module you will be able to control Relay (stand-by) and potentiometer motor (left/right which means vol up/vol down).
Im using it to control Polish potentiometer with a motor, but I know users who are using it with ALPS motor-driven potentiometers, they are working pretty fine ;)
You should connect this module to at least 9V AC ~200mA power.
Programming procedure is the same like in stand-by module. First button is a power on/off, second vol up, third vol down.

board layout, elements list, .hex file for attiny13, source code file are available here: >click me<