SynthBerry Pi is the first prototype of an autonomous synthesizer based on the PDSynth toolkit. PDSynth is a toolkit for creating programmable digital synthesizers made using the Pure Data visual development environment. To run PDSynth synthesis architectures a Raspberry Pi mini computer was used. Eight slide potentiometers are connected to the mini computer to create a control surface that makes it possible to control PDSynth's architectures. SynthBerry Pi is, therefore, a compact standalone synthesizer capable of creating sounds by using Pure Data patches.