: You will need to solder the buttons to the custom PCB and connect the screen and power board to the Raspberry Pi.

To "produce" or assemble one of these units, you typically need several specialized parts often found at retailers like Adafruit : : Uses a Raspberry Pi 2 or 3 for processing. Display : A 2.8" PiTFT capacitive or resistive touchscreen. Audio : A small speaker and a class D audio amplifier.

: A PowerBoost 1000 Charger and a 2000mAh or larger lithium-ion polymer battery.