PART                  QTY        DIGIKEY REFERENCE          PRICE in $$
1. MC ATTINY45           1          ATTINY45-20XU-ND           1.33
2. Power jack            2          CP-014CHPJCT-ND            0.90 x2
3. Power plug            2          CP3-1003-ND                0.93 x2
4. MOSFET IRLML2502      1          IRLML2502PBFCT-ND          0.51
5. Connector header      1          S9005E-06-ND               0.91 
6. Voltage reg           1          LP2985IM5-4.5CT-ND         1.06
7. Voltage reg           1          MC7805BDTGOS-ND            0.62
8. Transistor array      1          ZXTD09N50DE6CT-ND          1.14
9. Capacitor 2.2uF       5          ECJ-GVB1C225K              0.40 x5 
10. Capacitor 100nF      7          C1005X7R1A104K             0.24 (buy 10)
11. Capacitor 15pF       1          587-1949-1-ND              0.10
12. Capacitor 2700pF     2          311-1033-1-ND              0.11 (buy 10)
13. Capacitor 3300pF     1          311-1034-1-ND              0.11 (buy 10)
14. Capacitor 0.022uF    1          311-1378-1-ND              0.13 (buy 10)
15. Diode                2          BAT43WS-FDICT-ND           0.48 x2
16. Resistor 10K	 5          P10.0KLCT-ND               0.06 x5
17. Resistor 2.2K	 1          P2.2KLCT-ND                0.06 
18. Resistor 3.4K	 3          P3.40KLCT-ND	       0.06 x3
19. Resistor 7.87K       1          P7.87KLCT-ND               0.06
20. Resistor 10.7K       1          P10.7KLCT-ND               0.06
21. Resistor 16.5K       1          P16.5KLCT-ND	       0.06
22. Resistor 20K	 1          P20.0KLCT-ND               0.06 
23. Resistor 1K          2          P1.00KLCT-ND               0.06 x2
24. Resistor 100K        4          P100KLCT-ND                0.06 x4
25. Resistor 2.2M        1          P2.2MJCT-ND                0.05
26. Resistor 20 Ohm      1          P20.0LCT-ND                0.06
27. Resistor 47K         1          P47.0KLCT-ND               0.06
28. OPamp TLV2371        1          296-13057-1-ND             1.50
29. Opamp TLV2374	 1	    296-11967-1-ND	       2.21
30. Audio amp TPA721     1          296-1951-1-ND              1.27
31. Trimmer 10K          1          ST32ETA103CT-ND            1.12
32. Photo transistor     1          475-1081-ND                0.34 
33. Laser module         1          VLM-650-03-LPA-ND          9.53
34. Microphone           1          668-1166-ND                2.63