"XMAS" Project - Programming and Customizing PICmicro® Microcontrollers







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"XMAS" Project
This is a really fun project and one that I'm sure you and your family will get a
lot of use of - for any holiday, not just Christmas. I recommend that you build the PCB that is
included in the book as the time required to wire wrap or point to point wire this project will
dampen any holiday spirit (I know because I've built a number of these things by hand).
Click Here to look at the application's
source code.
The circuit used for this application is given in the pdf file that you can look
at Here.
The bill of materials for this application is:


Part
Description


U1
PIC16F84-04/P


U2
7805 +5 Volt Regulator


U3 - U4
74LS374, 8 Bit Register


Y1
3.58 MHz Ceramic Resonator with Built in 27 to 33 pF Capacitors


D1
1N4001 Silicon Diode


D2 - D17
5 mm Red LEDs - LEDs with pre-soldered leads recommended


R1
10K, 1/4 Watt Resistor


R2 - R17
220 Ohm, 1/4 Watt Resistors


C1
10 uF, 35 Volt Electrolytic Capacitor


C2, C4, C6
0.1 uF, 16 Volt Tantalum Capacitors


C3
0.47 uF Capacitor (Any Type)


J1
2.5 mm Power Plug


Speaker
Pieczo Electric Speaker (Digi-Key Part Number P9922-ND)


Miscellaneous
Breadboard Prototyping System, Wiring, AC/DC Power Supply