190
Part II: Advanced Hacks, Tools, and Techniques
Item Quantity Notes
Mirrors At least 1 More for reflecting laser multiple times
Wire 10’-30’ Two-conductor wire (telephone wire will work well); Radio Shack
Part #278-870
LCD display 1 BPI-216 LCD display, Scott Edwards Electronics
Exhibit B: Bill of Materials for Entry Alert–Based System
Item Quantity Notes
1 uF capacitor 1 C2; DigiKey Part #P11332CT-ND
0.1 uF capacitor 1 C3; DigiKey Part #P2067-ND
Coaxial power jack
connector
1 JP1; DigiKey Part #CP-5-ND
Connector 6 J3, J4, J5, J6, J7, J8; DigiKey Part #ED7064-ND
DB9 connector 1 P1; not required if SuperCarrier Board is used; Radio Shack Part #276-
1538
Transistor 1 Q1; Digikey Part #2N5089-ND
1K resistor 1 R3; Radio Shack Part #271-312
10K resistor 2 R6, R7; Radio Shack Part #271-312
100K resistor 1 R8; Radio Shack Part #271-312
Switch 1 S1 SW PUSHBUTTON, Radio Shack Part #275-1566
5V output voltage
regulator
1 U3; DigiKey Part #LM1117T-5.0-ND
BasicStamp2
controller
1 U6; Part #BS2-IC, Parallax Inc
Power supply 1 Radio Shack Part #273-1776
Entry alert 1 Radio Shack Part #49-312
Electronics enclosure 1 DigiKey Part #SRA31B-ND
SuperCarrier board 1 Optional; Parallax #27130
LCD display 1 U7; BPI-216 LCD display, Scott Edwards Electronics
Tie wraps 1 package Radio Shack Part #278-1656
4-40 size screws 1 package Radio Shack Part #64-3011
4-40 size nuts 1 package Radio Shack Part #64-3018
LED 1 Radio Shack Part #276-1622
Blank printed circuit
board (PCB)
1 Required if SuperCarrier is not used; Radio Shack Part #276-158
Wire 10'-30' Two-conductor wire (telephone wire will work well); Radio Shack Part
#278-870
Exhibit B
ch09_cube.indd 190
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