- Cheap, Easy Build
- Minimal External Components
- Transmit and receive functionality
- Martin, Scottie, Robot, SC2, and PD modes
- Works with any SSB receiver using a headphone connector
- Standalone Design (no PC or soundcard needed)
- SD Card Storage
- Waterfall
- Image File Browser and Slideshow
The SSTV code is written in pure C++, but a demo application is provided as an Arduino library. The Arduino Pico port by Earle Philhower is probably the easiest way to install and configure a C++ development environment for the Raspberry Pi Pico. It is possible to install the tool and get up and running with example applications in just a few minutes. Refer to the installation instructions and the online documentation to get started.
The original SSTV decoder used a very simple circuit, and the code was supplied as a simple sketch. I wanted to include a number of new features that would require different (additional) hardware. I wanted to provide software to support existing hardware while also supporting new hardware with a more comprehensive set of features. I decided that the best approach was to move from an Arduino sketch to providing an Arduino library.
- Install Arduino IDE.
- Install Arduino Pico Core.
- Download the Arduino SSTV library.
- Install the library in the Arduino IDE.
- Load the SSTV examples.
One of the nice things about Arduino libraries is the ability to include a number of code examples. I chose to use this feature to provide a few different example designs, ranging from the very simple to the more complete.
Similar to the original design, supporting the original hardware but with new modes.
Adds simple automatic SD card logging to the basic design
A minimal transmit-only example. Transmits an image from SD card.
Receive and transmit functionality, SD card storage and full menu driven UI.
For technical details, refer to the technical documentation part 1 and part 2.
A 3D printed enclosure can be found here, including stl files and FreeCAD design files.
Check out the port to Wio Terminal by Franciscu Capuzzi "Brabudu" IS0JSV.
Many thanks to Franciscu Capuzzi IS0JSV for implementing additional modes and the waterfall feature. This project uses the ILI934X display driver by Darren Horrocks.