In this guide, we’ll walk you through adding a buzzer to your existing ESP32 Lora Meshtastic Node. This guide will work also for any Heltec Lora V3 boards but slight changes might be required.
Hardware
Now let’s get started with the hardware you need:
Assembly
The hardware is all ready and set now to the wiring. For this, we will follow the following Schematics.
Buzzer – DIY ESP32 / Heltec Lora Meshtastic Node
- Positive -> PIN 15
- Negative -> GND
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Capacitors are good practice for decoupling one part of a circuit from another
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It’s Important To Note That The Order Of The Connections Might Vary. Follow The Labels And Io Ports On Your Specific Components And The Provided Schematics To Ensure Accurate Wiring. Paying Attention To These Details Ensures That You Establish The Correct Connections And Avoid Potential Issues or Damaging Your Components
Once all the wiring is completed. Double-check your connections and ensure they match the suggested layout before proceeding to the next steps.
Meshtastic Settings
- Open Meshtastic App (IOS for this guide)
- Go to the Settings page
- In the module configuration section go to External Notification
- Toggle the switch to enable Enable, Alert when receiving a message, Use PWM Buzzer
- Scroll down then Primary GPIO toggle Active then set the output pin GPIO to Pin 15
In conclusion, enhancing your DIY ESP32 Meshtastic Node with a buzzer is a simple and enjoyable process. By carefully following the provided guide, which includes a list of required hardware and step-by-step instructions, users can seamlessly integrate a buzzer into their existing setup. The hardware assembly, including the buzzer and pin connectors, is clearly outlined, ensuring a smooth implementation.
