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Learn wiring, driving methods, specs, and troubleshooting for the PKM17EPP-4001-B0 piezo buzzer module in electronics circuits. Local South African stock and support at Communica.
Diagram and notes for safely connecting the PKM17EPP-4001-B0 buzzer in circuits.
How to power and control the buzzer with microcontrollers or switches.
Find availability, lead times, and practical use advice for SA builds.
The PKM17EPP-4001-B0 is an electronic piezo sounder module known for compact size, low current draw, and straightforward integration into circuits. Widely used for alarms, notifications, and test signals in student projects, development boards, and industry prototyping across South Africa, it is favoured for its practical frequency, voltage range, and easy driving methods.
This module consists of a piezoelectric diaphragm and built-in drive circuit, producing a clear audible tone when powered. The PKM17EPP-4001-B0 is a "Pin-Type" piezo buzzer: simply apply DC voltage to sound the device – no waveform generation required.
| Parameter | PKM17EPP-4001-B0 Typical Value | Notes in SA Context |
|---|---|---|
| Rated Voltage | 5V DC | Compatible with Arduino, PIC, STM32 5V rails. |
| Operating Voltage | 3 to 7V DC | Allows tolerance for LIPO, USB, or battery variances. |
| Current (max) | under 12mA @ 5V | Fits most I/O or microcontroller outputs with margin. |
| Sound Pressure | Min. 85dB (at 10cm) | Loud enough for indoor alerts, test, and control apps. |
| Oscillation Frequency | ~4kHz | Standard tone for alarms and user feedback. |
| Mounting | Through-hole pins | Easy for breadboard or PCB builds. |
The PKM17EPP-4001-B0 features two pins: the longer (+) is the positive terminal, and the shorter (-) is ground. Proper orientation ensures correct and safe operation, especially when powered by regulated logic voltages.
PKM17EPP-4001-B0 Pinout: _________ / \ | Buzzer | | | | (+) (-) | \_________/ | | Vcc GND
5V GPIO GND
| | |
| | |
(+)----PWM--------(-)
PKM17EPP-4001-B0
When choosing a panel-mount or PCB-mount buzzer like the PKM17EPP-4001-B0, South African students and procurement teams should consider:
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For most projects, direct connection to a microcontroller GPIO is possible because of the buzzer's low current draw. For more robust or industrial uses, a switching transistor or MOSFET can isolate the control logic and source higher voltages if needed.
| Drive Method | Typical Use | Notes |
|---|---|---|
| Direct GPIO | Arduino, Pi, micro:bit | No extra parts for 5V/3.3V builds (under 10mA draw). |
| NPN Transistor Switch | Higher voltage or isolated control | Add 1k base resistor, emitter to GND. |
| MOSFET Switch | Multiple buzzers or automated test rigs | Logic-level MOSFET, driven from 3.3V or 5V logic. |
If powering directly from a 5V GPIO (typical on Arduino):
const int buzzerPin = 8;
void setup() {
pinMode(buzzerPin, OUTPUT);
}
void loop() {
digitalWrite(buzzerPin, HIGH); // Sound ON
delay(500);
digitalWrite(buzzerPin, LOW); // Sound OFF
delay(500);
}
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