The material list is based on the Requirements list

Bill of Materials

This time the materials you need depend on the design you prefer. Ofcourse you can use the same 1,000 lines/mm grating for both designs.

Must have for photodiode array design

For this device you need an Arduino or equivalent microprocessor.

# Amount Description Supplier NL Cost  
1 1 White LED iPrototype, EOO 0.52  
2 1 TSL1406R Photo diode array Mouser, DigiKey 22.35  
3 1 1,000 lines/mm grating ipacity, carolina 15.90  
4   1 100 uF capacitor Farnell 0.14
5 1 220 ohm resistor iPrototype 0.45  
6 1 Power switch EOO, iPrototype 0.95  
7 1 7.5 W power supply iPrototype, EOO 13.95  
8 1 Jack Adapter iPrototype, EOO 0.85  
    Total costs      
  • You will also need 3MM MDF and some M3 10 mm bolts and nuts

Nice to have

# Amount Description Supplier NL Cost
1 1 I2C LCD 16x2 Display iPrototype, (HobbyElectronica + HobbyElektronica 16.95
    Total costs    

Alternatives

  • Photodiode arrays can be found in flat bed scanners
  • CCD chips are part of cheap webcams
  • Compact Discs (CDs) have 0.001 mm slits

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