This is a great way to get started quickly. This is probably the first project I would recommend to people dipping their toes in the world of Pi, in fact you can even buy SD cards with Raspbian+FLDigi pre-installed from Mike Richards G4WNC. In fact you can install the popular FLDigi software on the Pi to decode a wide array of data modes including RTTY, PSK and CW to name a few. The Raspberry Pi can use the audio input from an external USB sound card to decode digital modes. Now I’ll take a look at my favourite amateur radio uses for the Raspberry Pi, these are listed in order of my priority order. These are pre-assembled and are designed to be the same size as the Pi to make mounting easier. Pi HATs (Hardware Attached on Top) are specially designed bits of hardware which can be purchased and plugged straight into the GPIO pins. Suddenly the potential for real world ham radio applications seems endless! These devices can collect information and can be controlled by software (which you can install or even write) on the Pi. This is what gives us the physical interface between the Pi and the outside world, because it allows us to connect a very wide range of sensors/devices and breakout boards. Depending on the version of Pi you get they will have anything from 26-40 GPIO pins onboard. Now we get onto one of the main reasons the Raspberry Pi has been so widely adopted by hobbyists, the General Purpose Input Output Pins (GPIO). There is a distribution of Linux especially for the Pi called Raspbian and this comes with enough software to get you started. If you have ever used an Android or Amazon phone or tablet you have already used a ‘distribution’ of Linux, but you probably never realised! Instead it uses the Linux operating system, if you’re not amiliar with this, Linux is Open Source (free), runs 90% of the world’s fastest supercomputers and has a large community of developers and resulting software (all of which is again free).
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