How To Setup Canned (Pre-Defined) Messages With Rotary & Knob Button For Your Meshtastic Node
Enhance your Meshtastic Node by adding a rotary knob button. Easily send pre-defined messages in emergency situations, offering a user-friendly and intuitive communication solution.
In this guide, we'll walk you through adding a rotary & knob button to your existing Heltec V3 Lora Meshtastic Node to send canned messages (Pre-Defined Messages). This guide will work also for any ESP32-based board like DIY ESP32 Lora, TTGo, or T-Beam but slight changes might be required to the selected pin. For ESP32 make sure you choose empty pins and adjust the settings to the pins chosen.
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Hardware
Now let's get started with the hardware you need:
- 1x EC11 Digital Potentiometer - AliExpress Price: 2.65 USD
- 5x Female to Female Pin Connector AliExpress Price: 0.42USD
Assembly
The hardware is all ready and set now to the wiring. For this, we will follow the following Schematics.
EC11 Digital Potentiometer - Heltec V3 Lora Meshtastic Node
- Switch-> PIN 42
- A ->46
- B - > 45
- GND -> GND
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
On the Sensor Device
- Open Meshtastic App (IOS for this guide)
- Go to the Settings page
- In the module configuration section go to Canned Messages
- Toggle the switch to enable Enable
- Set your messages separated by ' | '
- Set PIN A to 46
- Set PIN B to 45
- Set PIN Press to 42
- Leave Key Mapping as default or change it if you want to customize the control
- Lastly, press Save
Now you can scroll up and down through your canned (pre-defined) messages and simply press the rotart button down to send a message.
In conclusion, this guide provides a comprehensive walkthrough for enhancing your Meshtastic Node by adding a rotary knob button to facilitate the sending of pre-defined messages. The simplicity of scrolling through pre-defined messages and sending them with a press of the rotary knob button provides a user-friendly and intuitive way to communicate essential information. This can be particularly beneficial in emergency situations, where you don't have access to your phone.
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