[atmega328p/FreqModulation]

Frequency modulation using logic blocks

  Frequency modulation of pulses using and and not logic gates blocks.
FreqMod.ino

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[atmega328p/I2C_IOexpander]

MCP23017 example from Adafruit MCP23017 Arduino Library

// I2C IO expander controls an LED via an attached button.

mcp23xxx_combo.ino

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[atmega328p/MultiDisplay]

LCD HD44780 with PCF8574 Multi Display

// ----------------------------------------------------------------------------
// MultiDisplay - simple demonstration of accessing multiple lcds
// Created by Bill Perry 2016-07-02
// bperrybap@opensource.billsworld.billandterrie.com
//
// This example code is unlicensed and is released into the public domain
// ----------------------------------------------------------------------------
// 
// This sketch is for LCDs with PCF8574 or MCP23008 chip based backpacks
//
// Sketch will print lcd instance number on top line with i2c address
// and will print the amount of time since the Arduino has been reset
// on the second row.
//

MultiDisplay.ino

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[atmega328p/servo_Knob]

Controlling a servo position using a potentiometer (variable resistor)

 Controlling a servo position using a potentiometer (variable resistor)
 by Michal Rinott 

 modified on 8 Nov 2013
 by Scott Fitzgerald
 http://www.arduino.cc/en/Tutorial/Knob
Knob.ino

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