Hardware Here is a overview about all the hardware used to build Phoniebox. The price we paid for materials we did not already own is in displayed  square brackets  behind the materials.  Rough diagram how everything should be connected: Case Wodden box [12€] 30 x 20 x 15 cm  1,3 kg glazed surface Wodden boards (top and bottom) Rope Wodden strips Angle connectors Screws Stainless Steel Car Grill Mesh Screen [20€ for 100x33] Coated 304SS Grid 1mm round hole Edding (p ermanent markers ) white and black Technic Raspberry Pi 4 Modell B (4 GB) GINTOOYUN USB C Cable with On/Off Button [10€] MEIRIYFA Speaker 2.0 [20€] USB A powered 3.5mm AUX Jack power can be turned permantly on Neuftech USB RFID Reader (EM4100) [12€ includes 5 chips] EMOS Powerbank BetaQ [21€] 10,000 mAh 22.5 W Quick-Charge Charger with Passthrough (important!) 2x USB-A and 1x USB-C out RUNCCI-YUN USB-C socket [6€ for 6 sockets] waterproof Rated voltage: DC 5V/9V maximum current: 2.0A 12 mm diameter for the hole includes nuts RUNCCI-YUN Mini Round Momentary Push Button [9€ for 10 buttons] Rated voltage and current: AC250V/3A AC125V/6A Mounting cut-out: approx. 15.6mm/0.6"; Head Diameter: 19.2mm/0.75"; 2 Ports  Jumper cable