Parts List with Assembly Notes
Qty Type Part Spec Form ------- ----------- ------- --------------- ----------------------- 1 uC IC2 PIC '877 DIP 1 socket IC2s 40 PIN 0.6" DIP 12 transistor Q1-Q12 MOSFET N 60V 5A 2-7B1BPopulate the FETs Q1 – 12 with the tab above the white bar.
1 transistor Q13 NPN BJT TO-92 600ma 40VInstalled with the flat side as indicated on the PCB
1 capacitor C1 1000u 50V 5mm lead spacing 1 capacitor C2 10u 25V 2mm lead spacingThe polarized capacitors with the plus sign on the same side as the plus sign silkscreened on the board.
2 capacitor C3,C5 22p 100V 6.35mm lead spacingLittle dull brown disk
1 capacitor C4 0u1 50V 5mm lead spacingReally little, shiny brown disk
13 resistor R1-12, 1k 5% 1/4W R17 brown-black-red-gold 1 resistor R13 10k 5% 1/4W brown-black-orange-gold 2 resistor R14,R15 330 5% 1/4W orange-orange-brown-gold 1 resistor R16 5.1R 5% 5WWIREWOUND Additional units included to tune certain stepper motors. Ignore extras.
1 osc XT1 4 MHz HC-49 14 diode D1-12, 800V max DO41 D13,D14The diodes are installed with the band above the white band,
1 LED LED1 clear, 3mm T1Place the longer lead of LED1 in the hole marked with a plus sign.
5 terminal X1-3, 3pin terminal 0.2" SIP screw Y1-3, strip Z1-3The screw terminal blocks feature a dovtailed protrusion on one side and a dovetailed slot on the other; assemble five 3-terminal blocks together for the connections to the motor
1 header SV6 pin header 0.1" SIP 1 connector SV8 HD, M 4pin Pwr 0.2" SIPThe connectors SV9 and SV10 are for future expansion and for in-circuit programming; they are not necessary for normal assembly.+
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