|
PIC Controlled DDS VFO 0 to 6 MHz - ..... |
|
PIC debugging routine reads out binary numbers - 12/07/00 EDN-Design
Ideas.The “burn and learn” method of firmware development excludes an
in-circuit emulator and a serial port.With this method, it is common
practice to use spare I/O pins on a mC as a debugging aid. By
strategically placing instructions to set and clear these I/O pins in the
code.....PDF contains multiple circuits, scroll to find this circuit.....
[Design Idea by Brad Peeters, Theta Engineering Inc, Costa Mesa, CA] |
|
PIC Digital Clock Timer - This clock timer uses a PIC16F628
microcontroller to display 3 and 1/2 digit time and control an external
load. The clock includes a calendar with leap year and optional daylight
savings adjustments. The timer output can be set from 1 to 59 minutes and
manually switched on and off. The clock also has a correction feature that
allows an additional second to be added every so many hours to compensate
for a slightly slow running oscillator. The oscillator uses a common
32.768 KHz watch crystal and the frequency can be adjusted slightly with
the 24pF capacitor on the right side of the crystal..... [Bill Bowden] |
|
|
|
|
|
PIC Humnuller - This project is a portable (i.e. PC-less) hum rejecter (or
more accurately, hum estimator) principally for VLF listening application. It employs
the PIC’s ADC to sample the hum waveform, and performs a special type of filtering to
isolate it. The hum waveform is then reproduced on an external DAC so that it can be
subtracted from the VLF signal. The problem with hum is that it is rarely a single
frequency. Switching power supplies, light dimmers.....(added 04/04/04) |
|
PIC ICD - (electronic design added 03/04/05) |
|
PIC Logic Probe with Pulser - (schematic / circuit added 10/02) |
|
PIC Micro to Isa Bus Interface - (electronic circuit added 4/05)
|
|
PIC Programmer - As you can see, only a few standard elements are used and
the hardware is very simple to build. So here are only a few words about hardware.
Supply voltage can be either AC or DC. Voltage Vdd must be between 4.5 and 5.5 V. For
this purpose integrated stabiliser 78L05 (Vdd=5V) is used. It has current limitation
(protection) 100 mA and with this feature protects inserted PIC from damage in case
something is wrong connected. Programming voltage 13V is provided with 78L08..... [Bojan
Dobaj http://www.picallw.com] |
|
PIC Vacuum Fluorescent Display Interface - (electronic circuit added 4/05)
|
|
PIC12c508 Night Light Saver - ..... |
|
PIC12C509 Logic gate replacement for Nitrogen Filler - (circuit / schematic
design added 6/06) |
|
PIC12F675 PIN PONG - This project is based on ideas from Rickard's
electronic projects page and David B. Thomas VCR Pong. However, I have developed the
simplicity even further, eliminating most of the external components. Using
microcontrollers with internal 4MHz clock generator there is no need for the xtal. The
12f675 part also operates on wide voltage range, and the regulator can be removed. For
game controller, I plan on using the old Commodore 64 style paddless. They include
firing buttons, which I plan on using as power switch and game reset. 16F675 has a low
power sleep mode with 1nA current consumption, so I plan on using that to switch off.
…..... |
|
PIC12F675-Flashing LED - Simple little circuit for testing PIC12F675
microcontroller. When you start learning a programming language like C++, Visual Basic
or any other language your first step is to write a program that displays "Hello
World" on a computer's monitor. When you start learning how to program PIC
microcontrollers an equivalent to that is blinking a LED. ….(electronic schematic
added 11/08) |
|
PIC14c000 A/D Theory & Implementation - Microchip Application Note Published
26-Aug-97 (app note added 2/06) |
|
PIC16/17 Oscillator Design Guide - Microchip Application Note Published
26-Aug-97 (app note added 2/06) |
|
PIC16c54a EMI Results - Microchip Application Note Published 26-Aug-97
(app note added 2/06) |
|
PIC16C57 Based Code Hopping Security System Application Note - Microchip
Application Note Published 29-May-97 (app note added 2/06) |
|
PIC16C5x/PIC16Cxx Utility Math Routines - Microchip Application Note
Published 26-Aug-97 (app note added 2/06) |
|
PIC16C72 PicmasterR Emulator Probe for PIC12C67x Emulation. - Microchip
Application Note Published 27-Mar-98 (app note added 2/06) |
|
PIC16f639 MicroController Overview - Microchip Application Note Published
2-Dec-05 (app note added 2/06) |
|
PIC16F84 Alarm Clock - This is an alarm clock I built. It was very effective
during the sort time I used it, because I programmed it to play a very annoying tune
through a speaker. I actualy started to wake up before the alarm went of, so other
people int he house didn't wake up from the anoying pitches it played. The Jal
sourcecode is available on my download page Features * Timekeeping using the pic's
timer0 interrupt * 4x20 hd44780 compatible backlit lcd, displaying the time in big
numbers (4x4 and 4x3) * Alarm sound tune using pwm * computer interface for
synchronizing time with the web. * (maybe battery backup in case of a power
outage.....) …..... |
|
|
