Summary of ARDUINO + HAM RADIO = TEXTING
Dale created HamMessenger, a portable text messaging system for VHF ham radios using Arduino. The device integrates MicroAPRS firmware, GPS, an OLED screen, keyboard, battery management, and SD card storage for offline message handling. It offers a self-contained alternative to smartphones with extended battery life.
Parts used in the HamMessenger:
- MicroAPRS Arduino firmware
- Arduino board (dedicated to non-modem functions)
- $10 GPS receiver
- Battery pack
- Charge controller
- OLED screen
- Keyboard
- SD card
Over on the Spectrum web site, [Dale] — a relatively new ham radio operator — talks about his system for sending text messaging over VHF radios called HamMessenger. Of course, hams send messages all the time using a variety of protocols, but [Dale] wanted a self-contained and portable unit with a keyboard, screen, and a GPS receiver. So he built one. You can find his work on GitHub.
At the heart of the project is MicroAPRS, an Arduino firmware for packet radio. Instead of using a bigger computer, he decided to dedicate another Arduino to do everything but the modem function.
You can probably figure out the rest. A $10 GPS, a battery pack, a charge controller, and a few user interface parts like an OLED screen and a keyboard. In addition, there’s an SD card to store messages.
Of course, we couldn’t help but notice that our cell phone has a keyboard, screen, GPS, and storage. We might have been tempted to work out a way to connect the radio to it by Bluetooth. But we have to admit the little HamMessenger setup is cool-looking and probably lasts longer on a charge than our phone, too.
Source: ARDUINO + HAM RADIO = TEXTING
-
What is HamMessenger?
A self-contained and portable unit for sending text messages over VHF radios. -
How does the project handle data processing?
It uses an Arduino dedicated to all functions except the modem operation. -
What firmware runs on the main Arduino?
The project uses MicroAPRS, which is Arduino firmware designed for packet radio. -
Does the device include GPS functionality?
Yes, it includes a $10 GPS receiver as part of its components. -
How are messages stored on the device?
Messages are stored on an SD card included in the setup. -
What user interface parts are used?
The system features an OLED screen and a keyboard for user interaction. -
Why was this built instead of using a smartphone?
Dale wanted a specialized unit that likely lasts longer on a charge than a phone.
