All the parts can be obtained from Digikey or Conrad.
| Item Number/Description | Price (Aug 2013) |
| 526819-62 | |
| Steckplatine EIC-801 | € 8,43 |
| 524530-62 | |
| Verdrahtungs-Set EIC-J-S Steckbruecken-Set | € 6,84 |
| 160432 - 62 | |
| PIC16F690-I/P Gehauseart PDIP-8 | € 2,71 |
| 165203-62 | |
| Batteriehalter BH2AAW Kunststoff Schwarz | € 3,19 |
| 184560-62 | |
| LED 3 mm RTL 934 HD Rot 45deg | € 0,07 |
| 184705-62 | |
| LED diffus 5 mm L 53 GD Gruen 60deg | € 0,07 |
| 700460 | |
| DRUCKTASTER T602 | € 0.40 |
| 741091-62 | |
| Stiftleiste RM 2,54, gerade 10120506 BKL Electronic | € 0,16 |
| Item Number/Description | Price (Aug 2013) |
| 445-2525-1-ND | |
| Piezo Buzzer 4kHz | $ 0.72 |
| N189-ND | |
| 3V Lithium Battery (2cm) | $ 0.295 |
| 36-1026-ND | |
| Battery Holder (2cm Li Battery) | $ 2.02 |
You also need a 10k Ohm resistor to act as a "pull-up" resistor for the button.