Circuit: hbsch121 Date: Wed Jul 14 14:32:21 1999 Device Type Num. Used Value References Price Ea. Catalog No. Supplier 8 cell AA nicad pack 1 600 mAh BAT1 14.99 HCAP6005 towerhobbies.com 2% polyprop cap 1 0.0068 uF C6 0.49 P3682-ND Digikey monolithic cer cap 4 0.1 uF C5 C7 C9 C14 0.21 P4917-ND Digikey mini radial 'lytic 4 10uF C10 C11 C12 C13 0.08 P6248-ND Digikey monolithic cer cap 2 22 pF C1 C2 0.18 P4841-ND Digikey telephone cable 1 4-wire CAB1 1.60 17MP007 Mouser tantalum 2 4.7 uF C4 C8 0.29 P2011-ND Digikey mini axial 'lytic 2 47 uF C15 C16 0.29 P5972-ND Digikey mini axial 'lytic 1 470 uF C3 0.47 4000PHCT-ND Digikey power diode 1 1N4001 D3 0.15 333-1N4001 Mouser signal diode 1 1N914 D1 0.15 333-1N914 Mouser bridge rectifier 1 DB101 D2 0.62 DB101-ND Digikey AC or DC adapter 1 12v, 500mA DC1 3.95 100087 Jameco CPU board enclosure 1 ENCL1 5.12 537-402-RD Mouser interface enclosure 1 ENCL2 1.94 400-5043 Mouser PolySwitch¨ fuse 1 F1 1.32 RUE250-ND Digikey Coax Power Jack 2 2.1mm ID J11 J12 0.34 CP-002A-ND Digikey RJ11 top entry 1 6/4 J5 1.08 154-UL6642 Mouser RJ12 side entry 1 6/6 J10 1.28 154-UL6661 Mouser 11-pin female header 1 J3 12-pin female header 1 J4 14-pin female header 1 J14 14-pin male header 1 J15 3 pcs 9-pin female hdr 1 J2 3 pcs. 7-pin female hdr 1 J1 3-pin female header 1 J7 4-pin header 2 J8 J13 4x2 header, female 1 J6 DB-25 female connector 1 J9 1.54 152-3425 Mouser iron core inductor 1 1 uH L1 0.84 M7010-ND Digikey high-eff red LED 7 HLMP1700 LED1 LED2 LED3 LED4 LED9 LED11 LED130.282HLMP-1700QT-NDDigikey hi-eff yellow LED 2 HLMP1719 LED14 LED15 0.282 HLMP-1719QT-ND Digikey hi-eff green LED 6 HLMP1790 LED5 LED6 LED7 LED8 LED10 LED120.282 HLMP-1790QT-ND Digikey NPN darlington 1 ZTX614 Q1 0.59 ZTX614-ND Digikey 2 10K R3 R7 0.0235 10KEBK-ND Digikey 3 1K R2 R5 R10 0.0235 1KEBK-ND Digikey 1 2.2K R9 0.0235 2.2KEBK-ND Digikey 1 2.2M R1 0.0235 2.2MEBK-ND Digikey 1% precision res 1 *** R4 0.11 see below Digikey trimpot 1 20K VR1 1.74 P4D2203-ND Digikey 3 47K R6 R8 R15 0.0235 47KEBK-ND Digikey 1 47½, 5W R11 0.41 47W-5-ND Digikey 2 47½ R12 R13 0.0235 47EBK-ND Digikey 2 47½, 1/2W R14 0.06 47H-ND Digikey 1 1Kx4 RP4 0.21 592-8A-1K Mouser RPACK6 1 1Kx5 RP2 0.16 592-6S-1K Mouser RPACK9 2 47Kx9 RP1 RP3 0.27 592-10S-47K Mouser 14-pin DIP socket 2 DIP4 DIP5 0.57 ED3114-ND Digikey 16-pin DIP socket 4 DIP6 DIP7 DIP8 DIP9 0.65 ED3116-ND Digikey 20-pin DIP socket 2 DIP1 DIP2 0.81 ED3120-ND Digikey 28-pin DIP socket 1 DIP3 1.13 ED3728-ND Digikey 52-pin PLCC socket 1 PLCC 2.03 A2123-ND Digikey piezo beeper 1 SPKR1 1.90 P9957-ND Digikey SPDT slide switch 1 SW1 4.47 CKN5006-ND Digikey SPDT switch 1 SW4 1.10 SW101-ND Digikey pushbutton switch 2 SW2 SW3 0.20 P8006S-ND Digikey 32K static CMOS RAM 1 62256-100LP U2 3.95 42833 Jameco hex inverters 1 74HC04 U9 0.29 570-CD74HC04E Mouser quad Schmitt NANDs 1 74HC132 U7 0.46 511-M74HC132 Mouser 3-to-8 decoder 1 74HC138 U6 0.46 570-CD74HC138E Mouser tristate bus driver 1 74HC244 U5 0.70 570-CD74HC244E Mouser transparent octal latch 1 74HC373 U3 0.68 570-CD74HC373E Mouser octal latch 1 74HC374 U8 0.61 570-CD74HC374E Mouser voltage monitor 1 DS1233-10 U12 1.25 manufacturer Dallas Semi infrared demodulator 1 IS1U60 U15 3.00 manufacturer Sharp motor driver 2 L293D U10 U11 3.00 manufacturer SGS-Thomson voltage regulator 2 LM2931Z-5.0 U14 U17 0.90 LM2931Z-5.0-ND Digikey voltage regulator 1 LM7805CTB U13 0.53 NJM7805FA-ND Digikey RS232 converter 1 MAX232CPE U16 1.95 24811 Jameco 6811 microprocessor 1 MC68HC11A1FN U1 8.00 manufacturer Motorola 16x2 LCD 1 LM-052L U4 8.00 manufacturer Hitachi microproc crystal 1 8 MHz X1 2.32 332-5080 Mouser female strip header 3 unnamed 1.10 929974-01-36-ND Digikey male strip header 1 unnamed 0.76 929400-01-36-ND Digikey *** re: R4's value. Depending on the variety of the manufacture of the HC132 chip, R4 should be either 3.83K (Digikey 3.83KXBK-ND) or 6.81K (Digikey 6.81KXBK-ND). To test this, type "bit_set(0x1000, 0x40);" from the IC command line, and when the IR output circuit is active (as evidenced by the IR OUT LED9 being on), measure the frequency at pin 3 of the HC132. It should be 38 to 40 kHz. Use the 6.81K resistor to lower the frequency if it's too high; use the 3.83K resistor to raise it if it's too low.