This is a 5 Volt audio spectrum level indicator DIY assembly with 4 rows of 8 LED lights to monitor audio signal function and intensity.
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1.Features:
1> High sensitivity;
2> Low power;
3> Wide operating voltage range;
4> Low power consumption;
5> DIY design;
6> Colorful display;
7> Mode adjustable;
2. Parameters:
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No.
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Parameter
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Value
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1
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Model
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ASD-84
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2
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Standby current
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Less than 1mA
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3
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Soldering difficulty Level
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Easy
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4
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Working voltage
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DC 5V
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5
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Display LED
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8*4
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6
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Display color
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Red + Blue
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7
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LED Size
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2*5*7
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6
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PCB Size
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94*39.5mm
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3. Instructions:
Step 1: Complete installation.
Step 2: Connect audio;
Step 3: Apply DC 4-9V voltage;
Step 4: Adjust working mode;
Step 5: Test and use.
4. Mode setting:
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Mode
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Set Method
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Remarks
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Factory Testing Mode
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Press button S1 before Power on
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Used to monitor all LED on functions
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Fast Flashing Mode (3)
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Short press S1 less than 1second
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The refresh frequency is very fast
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Medium Flashing Mode (2)
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Short press S1 less than 1second
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The refresh frequency is general
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Slow Flashing Mode (1)
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Short press S1 less than 1second
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The refresh frequency is slow
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High Sensitivity Mode (H)
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Long press S1 more than 2second
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It can detect weaker audio signals
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Medium Sensitivity Mode (B)
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Long press S1 more than 2 seconds
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It can detect general audio signals
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Low Sensitivity Mode (L)
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Long press S1 more than 2 seconds
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It can filter more interference audio signals
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5. Verification
- Please ensure that all components are positioned in correct designation with polarity in right direction.
- Please verify that each component is properly soldered.
- The soldering iron can't touch the components for a long time, otherwise the components will be damaged because of the high temperature.
- It is recommended to use a stable power supply, otherwise it may interfere with the audio signal output.
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NO.
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Component Name
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PCB Designations
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Parameter
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Quantity
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1
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Metal Film Resistor
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R15
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10 ohm
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1
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2
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Metal Film Resistor
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RX1-RX4, RY5-RY12
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47 ohm
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12
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3
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Metal Film Resistor
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R13-R14
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470 K ohm
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2
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4
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Ceramic Capacitor
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C5
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0.001uF 102
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1
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5
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Ceramic Capacitor
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C2-C4
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0.1uF 104
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3
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6
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Electrolytic Capacitor
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C1
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220 uF
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1
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7
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Red LED
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D1-D16
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2*5*7mm
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16
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8
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Blue LED
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D17-D32
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2*5*7mm
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16
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9
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Audio Socket
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J2, J3
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SMD3P
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2
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10
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Power Socket
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J1
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DC3.5
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1
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11
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WD1084
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U1
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DIP-16
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1
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12
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Button
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S1
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6*6*5
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1
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13
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USB to DC Cable
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To J1
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100cm
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1
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14
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Audio Cable
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To J2
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100cm
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1
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15
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PCB
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ASD-84
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94*39.5mm
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1
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7. Installation tools needed (not supplied):
1>. Soldering iron;
2>. Multimeter;
3>. Solder wire;
4>. Iron stand;
5>. Diagonal cutting pliers;
6>. Tweezers;
7>. Long nose pliers;
8>. Desoldering Suction pump;
9>. Tip Cleaning sponge;
10>. Screwdriver set.
AK-ASD-84 (ADS-84.pdf, 11,296 Kb) [Download]
