AVT 1853 User manual

1
• single channel load: 3A
Specifications
• selectable input signal:
• working with LED strips or RGB modules
the fussiest of partygoers.
• 7 effects to choose from
• power supply: 12 VDC
• board size: 79×58 mm
music, but also good lighting. Presented RGB LED
controller circuit will even meet the expectations of
- microphone (MIC)
- LINE IN socket
The key to a successful event is not only a good
The programme then calculates the light intensity
value for each channel and controls the output
transistor in proportion to the result. Activators are
transistors T1...T3 (BUZ11) with a high current-
carrying capacity. There is a LINE IN input on the
board for direct input of an AUDIO signal of 0.7 V
(typical headphone output). You can select the sound
source using the SEL jumper: CINCH (RCA) or
microphone (MIC).
Electrical diagram of the device is shown in Figure 1. It
consists of a microcontroller, an operational amplifier
and power transistors. The input signal is provided by
High: 13…14 kHz.
Medium 6...7 kHz.
the C1 capacitor to the input of the operational
amplifier. The input polarising voltage is determined
by a divider made up of resistors R9, R10, R13, R14.
The microcontroller (ATmega8) is clocked by an
internal RC generator operating at 8 MHz. Analogue
signal from the audio amplifier is measured using an
A/D converter and is delivered to the
PC0 input. The program 'selects' components in the
following frequency ranges from the audio signal:
Low 500 Hz...2 kHz.
Circuit description
RGB LED Illuminophony
AVT 1853
ASSEMBLY DIFFICULTY
kits
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Fig. 1 Schematic diagram
Fig. 2 Arrangement of components on the PCB
2
The circuit must be assembled on a single-sided PCB
as shown in Figure 2. Start by soldering resistors and
other small components onto the board and finish by
fitting electrolytic capacitors, transistors and screw
connectors. Microphone can be soldered directly to
the angled goldpin strip. Device assembled flawlessly,
using functioning components, will work as soon as
the supply voltage is switched on.
Mounting and start-up
MEGA8-P
330R
330R
330R
10K 10K 10K
+12V
GND
10K
+5V
LM358N
LM358N
2.2K
GND
+5V
1uF
1M
33K
GND
+5V
220K
22K
GND
10p
390K
33K
+5V
GND
33K
GND
100K
10p
330R
1n
GND
1uF
GND
7805
+5V
+12V
GND
GND
10K
+5V
GNDGND GND GND GND
+12V
LINE
IN
+12V
PWR
GND OUT1
GND
OUT2
OUT3
PB5(SCK) 19
PB7(XTAL2/TOSC2)
10
PB6(XTAL1/TOSC1)
9
GND
8
VCC
7
GND
22
AREF
21
AVCC
20
PB4(MISO) 18
PB3(MOSI/OC2) 17
PB2(SS/OC1B) 16
PB1(OC1A) 14
PB0(ICP)
15
PD7(AIN1) 13
PD6(AIN0) 12
PD5(T1) 11
PD4(XCK/T0) 6
PD3(INT1) 5
PD2(INT0) 4
PD1(TXD) 3
PD0(RXD) 2
PC5(ADC5/SCL) 28
PC4(ADC4/SDA) 27
PC3(ADC3) 26
PC2(ADC2) 25
PC1(ADC1) 24
PC0(ADC0) 23
PC6(/RESET)
1
US1
T1 T2 T3
R1
R2
R3
R4 R5 R6
R7
2
3
1
US2A
6
5
7
US2B
1
2
JP1
R8
C1
R9
R10 R11 R12
C2
C3
R13
R14 R15 R16
C4
R17
C5
C6
GND
VI
1
3
VO 2
US3
C7
C8
C9 C10
31
S1
R18
SEL
1 2 3
L1
C11C12
D1
+
+ +

3
- Changing colour randomly to the bass rhythm.
You select he effect using the MODE button (S1):
- Red.
- Blue.
- Green.
- White.
- Illuminophony.
- Off.
Operation
C3
C9
C10
A
C
D1
Semiconductors:
Capacitors:
Resistors:
R10, R14, R15:............33 kΩ (orange-orange-orange-gold)
Z: ....................................jumper (0 Ω)
D1: .................................1N4007 !
R13: ...............................390 kΩ (orange-white-yellow-gold)
C1, C6:. .........................1 μF (can be labelled 105)
R1-R3, R17:. ................330 Ω (orange-orange-brown-gold)
R8:..................................2,2 kΩ (red-red-red-gold)
R11: ...............................220 kΩ (red-red-yellow)
R12: ...............................22 kΩ (red-red-orange)
R16: ...............................100 kΩ (brown-black-yellow-gold)
C2, C4: ..........................10 pF (can be labelled 10)
C7, C8, C11, C12:.......100 nF (can be labelled 104)
R4-R7, R18: .................10 kΩ (brown-black-orange-gold)
R9:..................................1 MΩ (brown-clack-green-gold)
C3:..................................10 μF !
C9, C10:........................100 μF !
C5:..................................1 nF (can be labelled 102)
T1, T2, T3: ....................Power transistors, e.g... BUZ11 !
US2: ...............................LM358 !
US1: ..............................ATMEGA8 !
US3: ...............................7805 !
Other:
S1: ..................................Microswitch angle
L1: ..................................choke
SEL: ................................goldpin 1×3 + JUMPER
MIC: ..............................microphone electret
X1:..................................connectors DG301/3 - 2 pcs
X2:..................................connector DG301/2 - 1pcs
List of elements
To access high-resolution images download the PDF file.
Begin assembly by soldering the components onto the board in order of size from smallest to largest.
When mounting components marked with an exclamation mark, pay attention to their polarity.
Frames with diagrams of the leads and symbols of these components on the PCB and photographs of the
assembled kit may be helpful.
!
1
US2 MIC
T1
T2
T3
US3
US1
1
shortenedshortened
sideside
shortened
side
Marker
Marker
Marker
Marker
shorter
leg
Marker
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4
Notes
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.
The self-assembly kits are intended for educational and demonstration purposes only. They are not intended for use in commercial applications. If they are used in such applications, the
purchaser assumes all responsibility for ensuring compliance with all regulations
This symbol means do not dispose of your
product with your other household waste.
Instead, you should protect human health
and the environment by handing over your
waste equipment to a designated collection
point for the recycling of waste electrical
and electronic equipment.
Leszczynowa 11 Street,
03-197 Warsaw, Poland
https://sklep.avt.pl/
AVT SPV Sp. z o.o.
kits