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Useful articles on circuits, systems and Microcontrollers

Here are some useful articles on electronics and microcontrollers.

PIC micro programming methods.

Digital I/O expansion methods.

PIC timer calculations.

Frequency counter techniques: Direct and Reciprocal counting methods.

Simple multitasking method (works for 12F675 and larger).

Microcontroller Debugging methods (also general debugging methods).

Fixed point maths

Hardware interrupts - a short introduction.

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  1. The TP4056: Lithium Ion/polymer Battery Charger IC

    Learn how to use the TP4056 properly. There's a right way, and a wrong way, to use it to safely charge Lithium Ion batteries.

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  2. How to use the MCP23017 I/O Expander on the Arduino

    How to use the MCP23017 to increase your I/O by 16 pins (or more) and use its interrupt system.

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  3. How to use the MCP4725, a versatile and tiny (SOT-23-6) analogue output device

    The MCP4725 chip is a 12 bit DAC with memory that outputs voltage that you can use for many dfferent purposes. Find out what they are in this page.

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