All the parts can be obtained from Digikey and Conrad.
Item Number/Description | Price (Dec 2011) |
PIC16F690-I/P-ND | |
(IC PIC MCU flash 20DIP) | $2.44 |
X909-ND | |
ZIT-20.00MX ceramic resonator | $0.60 |
609-3291-ND | |
Conn Header 6POS | $0.44 |
480-1952-ND | |
Phototransistor NPN T1 (SDP8405-003) | $2.10 |
A404AE-ND | |
20 Pin Solder Tail Dip Socket | $1.53 |
768-1028-ND | |
Cable USB to TTL Serial Conv | $20.00 |
We note that it is very important to have the correct IR detector. The one listed above, SDP8405-003 made by Honeywell, works well. The detector must have the following resistance properties: high resistance without laser (above 2000 Ohms), and a low resistance when the laser is shining on it (less than 500 Ohms). This change in resistance acts as a TTL switch on pin 11. I believe the pin goes from low to high at around 1000 Ohms.
Item Number/Description | Price (Aug 2013) |
526819-62 | |
Steckplatine EIC-801 | € 8,43 |
524530-62 | |
Verdrahtungs-Set EIC-J-S Steckbruecken-Set | € 6,84 |
165193-62 | |
Batteriehalter BH2AAW Kunststoff Schwarz | € 3,19 |
184560-62 | |
LED 3 mm RTL 934 HD Rot 45deg | € 0,07 |
816476-62 | |
Lasermodule Red 1 mW Laserfuchs LFD650-1-12 | € 7,50 |
405175-62 | |
Resistor: 220 Ohms, 0.5 W | € 0,09 |