AVT 594 Instruction Manual

Remote-controlled potentiometer

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Remote-Controlled Potentiometer

kits

For Audio Applications

The device is perfectly suited to any audio amplifier

equipped with a standard 'manual' potentiometer.

This circuit can be controlled by virtually any infrared

remote control, requiring only a simple remote code

memorisation procedure. It was tested with several

pilots from different televisions, decoders, DVDs and

audio equipment - with each it worked properly.

Any button on the remote control can be assigned to

one specific function: turn left (volume down), turn

right (volume up) or on/off. This makes it possible to

use remote control buttons normally not used.

The controller is a versatile circuit. After the exchange

of the potentiometer for a geared motor, it can

control, for example, window blinds.

Circuit description

Electrical diagram of the circuit is shown in Figure 1.

The controller is built on an 8-lead microcontroller

ATtiny45, which is equipped, among other things,

with a non-volatile EEPROM where codes will be

stored for individual commands that control the

circuit operation. Components R2, C2 are

responsible for resetting the processor during power

on. The microcontroller does not require any

external quartz resonator as it has an integrated RC

generator. The TFMS5360 infrared receiver is

connected to the PB4 input of the processor. Light

emitting diode D1 is used to signal the status of

relay PK1 controlled by transistor T7 from output

Characteristics

• remote control by any infrared remote control

• simple teaching mode for remote controller

• ability to assign any remote control keys for three

functions:

- turn anticlockwise

- turn clockwise

- control of integrated relay (e.g., ON/OFF)

• power supply: 12 VDC

• remote control and potentiometer with motor

included

PB2 of the processor, it also has a useful function

when teaching codes sent by the remote control.

This circuit must be supplied with a DC voltage of

approx. 14 VDC. The digital part of the device is

stabiliser. Each received command coming from the

transmitter is analysed by the processor. If it

corresponds to one of the predefined commands,

the motor is set in motion for the time specified by

the transmission time and in set direction. Each

received command assigned to relay PK1 changes its

state to the opposite. The relay type RM96 is

designed for switching currents of up to 8 A, which

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ASSEMBLY DIFFICULTY

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Summary of Contents for AVT 594

Page 1 Remote-Controlled Potentiometer kits For Audio Applications DOWNLOAD ASSEMBLY DIFFICULTY The device is perfectly suited to any audio amplifier Characteristics equipped with a standard 'manual' potentiometer. • remote control by any infrared remote control This circuit can be controlled by virtually any infrared •...
Page 2 in most cases is enough to activate amplifier polarise transistor T5, as well as transistors T4 and circuits. Diode D2 protects transistor T7 from the T1. Current will flow through the path: +power effects of surges occurring on the relay coil at the supply, transistor T1, motor winding , transistor T4 time of switching off.
Page 3 most cases, you want that only one button had this confirmation by the circuit) corresponding key on function, so it had to be pressed twice. Such action your remote control. After this action, the relay will is needed for correct operation with some remote switch on briefly, which is an incentive to enter the controls.
Page 4 AVT SPV reserves the right to make changes without prior notice.Installation and connection of the appliance not in accordance with the instructions, unauthorised modification of components and any structural alterations may cause damage to the appliance and endanger persons using it. In such a case, the manufacturer and its authorised representatives shall not be liable for any damage arising directly or indirectly from the use or malfunction of the product.