Here are some useful articles on electronics and microcontrollers.
micro programming methods.
counter techniques: Direct and Reciprocal counting methods.
multitasking method (works for 12F675 and larger).
Debugging methods (also general debugging methods).
Fixed point maths
Hardware interrupts - a short
Arduino switch case : Allows you how to write compact code with multiple conditions.
How Arduino strtok works, and how to use it (and how to avoid problems).
How to use the MCP23017 to increase your I/O by 16 pins (or more) and use its interrupt system.
How to use Arduino if else statements to make decisions in your programs.
How to unbrick an ATtiny: What to do when your ATtiny seems dead - it is probably not - find out how to fix it here.
Using an ATtiny Programmer gives you massive memory savings and complete control for low power operations.
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