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Mucking about in the attic

Mucking about in the attic
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Category Archives: PIC projects

Everything that touches on PIC programming

4-wire fan PWM control using a PIC18F4550
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Posted on February 11, 2015 by bart

Introduction Once again I am playing around with PIC microcontrollers. Now I finished a complete demo that does this: drive a 4-wire fan, in my case a Noctua NF-S12A using PWM read the fan’s tachometer output to determine its speed … Continue reading →

Posted in PIC projects | Tagged 4-wire fan, MPLABX, PIC18F4550, PWM, xc8

Driving the 4 digit 7 segment display

Posted on June 27, 2011 by bart

Here is the documentation of my next step: driving the LED display. The design and the C code were not really difficult; the steps to put the results here were. As I noted before I use a PIC 16F887, but … Continue reading →

Posted in PIC projects | Tagged 16F887, 7 segment LED display, multiplexing, PIC development, SDCC

My breadboard is full

Posted on June 15, 2011 by bart

This is what my breadboard now looks like. It is full and it does what I want it to do for now. Time for a bit of a code cleanup and then I can show what I have achieved so … Continue reading →

Posted in PIC projects | Tagged 16F887, 7 segment LED display, PIC development

Step two: add latches

Posted on June 8, 2011 by bart

Even though I use a big 40 pin PIC for my experiments I decided to try how sharing output pins for multiple purposes works. To do that I use two 74HCT573 (PDF) octal latches. The goal is to drive 16 … Continue reading →

Posted in PIC projects | Tagged 16F887, Microchip, PIC development, SDCC
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