Battery Power level indicator (SKU#KA2284)

The KA2284 Power Level Indicator Module is a versatile module commonly used for monitoring power levels, audio signal levels, or battery voltage levels. Here’s a general guide on how to use it:

Specifications:

1. Operating Voltage: 3.5V - 12V DC
2. 5 LED Indicators: Represent different levels (e.g., battery voltage, audio level, or power level).
3. Signal Input: Analog input for voltage or audio signals.
4. Adjustable Sensitivity: Through a potentiometer on the module.

Steps to Use the Module:

1. Wiring the Module:

• Power Supply: Connect the module’s VCC and GND pins to a DC power source (3.5V to 16V).
• Signal Input: Connect the IN pin to the voltage source or audio signal you want to monitor.
  • For battery monitoring: Connect the battery’s positive terminal to IN.
  • For audio signal: Connect the signal line (e.g., from an audio output) to IN.

2. Adjusting Sensitivity:

• Use the onboard potentiometer to adjust the sensitivity or threshold of the LEDs.
  • Turn clockwise to increase sensitivity (LEDs will light up at lower input levels).
  • Turn counterclockwise to decrease sensitivity.

3. Interpreting the LEDs:

• Each LED represents a different level of the input signal.
  • For example, in battery monitoring, the LEDs indicate increasing voltage levels.
  • In audio level monitoring, the LEDs indicate the amplitude of the audio signal.

4. Testing the Module:

• Power the module and provide an input signal.
• Observe how the LEDs light up based on the input signal level.
  • If connected to a battery, higher voltage lights more LEDs.
  • If connected to an audio source, the LEDs will react to the signal's amplitude in real time.

5. Applications:

• Battery Indicator: Use to show the charge level of a battery.
• Audio Level Indicator: Display audio amplitude in audio equipment or amplifiers.
• Power Level Indicator: Monitor voltage levels in circuits or devices.

Example Setup for Battery Monitoring:

1. Connect VCC and GND to a 12V DC power supply.
2. Connect the positive terminal of the battery to the IN pin.
3. Adjust the potentiometer so that the LEDs accurately represent the battery levels.

Notes:

• Ensure the input voltage does not exceed the module's maximum rating (14V).
• For audio signals, you may need a resistor or capacitor to filter the signal for better accuracy.
• Avoid reversing polarity when connecting the power supply or input signal.

Download

• Datasheet