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Properties
Properties describe core aspects of the project.
Pricing & Availability
Distributor | Qty 1 |
|---|---|
Digi-Key | $3.21 |
LCSC | $3.38 |
Mouser | $3.05 |
Assets
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victor342
copilot
- Objective: Ensure all components are correctly placed and soldered on the PCB.
- Actions:
- Visually inspect connections for cold solder joints or shorts.
- Use a multimeter to check for continuity between pins of each component and their respective nets.
- Components to Check: IC1, CP1, V1, VR1, LED1.
Step 2: Verify Power Supply- Objective: Confirm the power supply circuit is functioning correctly.
- Actions:
- Power the circuit with a 5V supply connected to V1.
- Measure the voltage across CP1:P1 (positive) and CP1:P2 (negative) to ensure the capacitor is charging to 5V.
- Components to Check: V1, CP1.
Step 3: Test the Voltage at IC1 Power Pins- Objective: Make sure IC1 is receiving proper power.
- Actions:
- Measure the voltage between IC1:6 (V+) and IC1:4 (GND). Expect a reading close to 5V indicating that IC1 is powered.
- Components to Check: IC1, V1, CP1, VR1.
Step 4: Audition the Audio Amplifier IC (LM386)- Objective: Verify if IC1 (LM386) is operational.
- Actions:
- Feed a low audio signal (e.g., 1kHz sine wave from a function generator) into IC1:3 (+) and IC1:2 (-).
- Listen for amplified audio output on IC1:5 (~). Optionally, connect a small speaker or use headphones with a series resistor.
- Components to Check: IC1, VR1.
Step 5: Adjust Volume Control- Objective: Check the variable resistor (VR1) for volume control functionality.
- Actions:
- Rotate VR1's knob while the audio signal is being amplified.
- Verify that the volume changes accordingly, indicating that VR1 is effectively controlling the gain.
- Components to Check: VR1, IC1.
Step 6: LED Functionality Test- Objective: Confirm that LED1 lights up correctly.
- Actions:
- Observe if LED1 lights up when the circuit is powered, indicating signal processing and power flow through the circuit.
- Check for brightness variations which may indicate fluctuations in the IC output or errors in the circuit design.
- Components to Check: LED1, IC1.
Step 7: Final Functionality Check- Objective: Ensure the project works as intended with all components functioning together.
- Actions:
- With the audio signal still applied and the power on, adjust VR1 to various positions and note any changes in the output signal and LED brightness.
- Confirm that adjusting VR1 changes the audio output volume as expected, and that LED1's behavior correctly corresponds to the audio signal processing.
- Components to Check: All.
Report and Documentation