Pic Micro Tips and Techniques.

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PIC Micro hardware and software techniques to help you design your projects.

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Jump to General, Resources, Hardware, Software, Other.

General	Resources
ICSP	PIC device comparison
ICSP programming	Pinouts
RS232	RS232 pinout
Transmission lines	Using PIC I/O : TRIS, PORT
Static electricity precautions	Crystal ppm calculations
Hardware debugging	Interactive Timer 0 calculator
PIC Timer overview	Interactive Timer 1 calculator
I/O Expansion techniques	Interactive Timer 2 calculator
PIC Programmers
Hardware specific
Switch debouncing	Setting up RS232
12F675 : Setting OSCCAL in C	12F675 :Recovering lost calibration
Noise rejection decoupling	Use the voltage reference module as a DAC
Software specific
Hexadecimal conversions	Assembler
Soft USART (TX) (TX details)	Soft USART (RX/TX) (RX details)
Using fixed point maths
Other
Reading schematics	Multitasking
Prototyping	Electronic schematic symbols
Using an oscilloscope	PWM

PIC Micro : General

ICSP In Circuit Serial Programming circuit and notes.

ICSP programming - How you set up the ICSP hardware and PC software.

RS232 - What it is and how it works.

Transmission line terminators - How to improve signal quality using one.

This method applies equally well for long cables or PCB traces. e.g. Parallel port or Serial port cables.

Static electricity precautions - Static precautions and advice.

Hardware debugging techniques.

A quick overview of Timer mid-range 1,2 & 3

I/O Expansion techniques Serial interfaceI/O

Methods to increase your Input or output pins from/to your microcontroller. Minimum requirement is 1 pin.

PIC Programmers Explanation of the various types of PIC programmers

PIC Micro Resources

PIC device comparison Comparing some PIC micros using bubble diagrams. They also give a quick overview of the Program memory, RAM, EEPROM and peripherals.

Pinouts of some common devices used on this site

RS232 pinout diagrams at the PC connector.

Using PIC I/O : TRIS, PORT: General notes applicable to any PIC device.

Crystal ppm calculations: Notes on accuracies of crystal and other oscillators.

Interactive Timer 0 calculator showing frequency, period of Timer 0 output.

Interactive Timer 1 calculator showing frequency, period of Timer 1 output.

Interactive Timer 2 calculator as above using pre-,post- scaler & period reg.

PIC MIcro Hardware techniques

Switch debouncing Debouncing input keys on a Microcontroller port.

12F675 - How to set the OSCCAL value stored in the 12F675.

12F675 - How to recover OSCCAL.

Does RS232 work? Five simple rules to ensure your RS232 system works.

Noise rejection decoupling. Notes on decoupling to reduce digital noise.

Use the voltage reference module
as a DAC

The built in refence can generate a voltage out.

PIC Micro Software techniques

Bits bytes and hexadecimal conversions
All about bits, bytes and hexadecimal numbers and conversions.

Assembler instructions for the mid range PIC processor.

Soft USART (TX) The transmission part of a USART (~90 words).

Soft USART (RX/TX) Details the reception part of a USART (~? words).

Fixed point maths How to avoid using floating point maths to save memory and operate faster.

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Other

Reading schematics A simple introduction to reading schematics.

Multitasking A guide to simple multitasking - fits into 12F675 (1k).

Schematic symbols A list of schematic symbols and components

Prototyping Discusses solderless breadboard, stripboard and pcb methods.

Using an oscilloscope Beginners guide to using an oscilloscope.

PWM what it is and what it's for.

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