Table 1

Bill of materials

MaterialPrice (€)VendorCodeManufacturer
LED MATRIX26.74amazon.itB071VJL91VKuman:WS01
Stepper motor3.38amazon.itB00DGNO6PIElegoo
PLA16.66amazon.itB06W568X1GTECHNOLOGY OUTLET
Pi camera18.99amazon.itB07P8PG5MFBewinner: Bewinnertyv48w6mf5
Raspberry PI44.51amazon.itB01CD5VC92raspberrypi
Graphene PLA27.50filoprint.itPLA_GRAFENE_175Haydale
Arduino UNO16.85amazon.itB07SL2W4CLArduino: A000066
Power supply5.69amazon.itB00UVOHJ0YSamsung:TA10EWE
Piezo Buzzer1.35adafruit.comPS1240tdk
Cables/wires2.00Off the shelf
Total163.67