As I was asked a lot lately here are the overall costs
- Arduino: 16,00 €
- PCB: 7,50 €
- Raspberry Pi: 58,00 €
- SD Card: 7,00 €
- Button: 8,00 €
- Piezos: 10,00 €
- Ultrasonic Sensor: 4,00 €
- Löwen set with matrix: 190,00 €
- Case Lock: 10,00 €
- MDF: 2,50 €
- Plywood: 45,00 €
- Color: 9,00 €
- Inking roller: 4,50 €
- Self-adhesive numbers: 20,00 €
Not taken into account
- LED strip: about 15,50 €
- Power supply: 20,00 €
- Little parts like wires, resistors, shrink tube, …: 25,00 €
Overall
The cost of this machine is about: 452 € total.