Quantity   Component name
1 × 4GB Micro SD Card The LCD loads its user interface from a micro SD card
1 × Arduino Uno
1 × QMC5883L Compass Module Available for a few dollars from Ebay.
1 × Nextion NX4832T035 3.5" TFT LCD Display
1 × Micro SD Card Adapter An adapter is required to transfer files from your PC to the micro SD card.