https://github.com/handiko/dorji-tx-shield

Dorji DRA818V VHF transmitter module shield for Arduino UNO & compatibles
https://github.com/handiko/dorji-tx-shield

afsk afsk-signal aprs aprs-beacon aprs-tracker arduino arduino-shield arduino-uno dorji dorji-tx-shield dra818 dra818v telemetry

Last synced: about 1 month ago
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Dorji DRA818V VHF transmitter module shield for Arduino UNO & compatibles

• Host: GitHub
• URL: https://github.com/handiko/dorji-tx-shield
• Owner: handiko
• License: gpl-3.0
• Created: 2019-01-03T21:48:13.000Z (over 6 years ago)
• Default Branch: master
• Last Pushed: 2020-04-28T22:12:37.000Z (almost 5 years ago)
• Last Synced: 2025-03-16T22:51:15.611Z (about 1 month ago)
• Topics: afsk, afsk-signal, aprs, aprs-beacon, aprs-tracker, arduino, arduino-shield, arduino-uno, dorji, dorji-tx-shield, dra818, dra818v, telemetry
• Homepage: https://handiko.github.io/Dorji-TX-Shield/
• Size: 17.1 MB
• Stars: 21
• Watchers: 1
• Forks: 40
• Open Issues: 1
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# Arduino UNO Shield for Dorji DRA818V/U Transmitter

Dorji DRA818V VHF transmitter module shield for Arduino UNO & compatibles.

This Arduino shield is intended to used as an APRS Transmitter module based on Arduino UNO (see my Arduino APRS [GitHub page](https://handiko.github.io/Arduino-APRS/) or [GitHub repo](https://github.com/handiko/Arduino-APRS). In this version (v.1.0), this board only support low power mode since high power will demand more current and this board only powered from 5V pin of the Arduino (It doesn't obtain power from Arduino Vin pin, yet).

## Photos

![](./dorji_2.jpg)

![](./dorji_merge.jpg)

## Pinout

![](./pinout.png)

_Please note that in order to use PIN 8-11 as Serial Data lines, you need to use **SoftwareSerial** library._

## Schematic

![](./Arduino_Dorji_TX_Shield_Schematic.png)

## TODO

* Adding Silkscreen layer

* Adding ISP port capability

* Adding RX capability (maybe in a different repo..?)

* ...

## Acknowledgements

* Djoko Marjono Susilo - YB1TJ

* Adafruit Proto Shield PCB [GitHub page](https://github.com/adafruit/Adafruit-Proto-Shield-PCB)

## Contributing

1. Fork it [https://github.com/handiko/Dorji-TX-Shield/fork](https://github.com/handiko/Dorji-TX-Shield/fork)

2. Create new branch (`git checkout -b add-blah-blah`)

3. Do some editing / create new feature

4. Commit your works (`git commit -m "Adding some blah blah blah.."`)

5. Push to the branch (`git push -u origin add-blah-blah`)

6. Create a new Pull Request