Learn Audio Electronics with Arduino

INTRODUCTION

SOFTWARE TOOLS

Tinkercad

LTSpice

Arduino IDE

EQUIPMENT

Arduino Uno

Breadboard

Switches & LEDs

Resistors, Capacitors & Potentiometers

Audio & MIDI Components

Other Components

Soldering

Final Component List

CONCLUSIONS

1 ELECTRONICS FUNDAMENTALS

1.1 SCALES, SYMBOLS & EQUATIONS

1.1.1 Worked Example- Adding Voltages

1.1.2 Worked Example- Working with Fractions

1.2 ELECTRICAL FUNDAMENTALS

1.3 TUTORIAL- INTRODUCTION TO TINKERCAD

1.4 EXAMPLE PROJECT- GETTING STARTED: AN ARDUINO POWERED LED LIGHT

1.5 CONCLUSIONS

1.6 SELF- STUDY QUESTIONS

2 SYSTEMS & TRANSDUCERS

2.1 ELECTRONIC SYSTEMS & TRANSDUCERS

2.2 DIGITAL SYSTEMS & ARDUINO CONTROL

2.3 ANALOGUE TO DIGITAL CONVERSION- SAMPLING

2.4 MIDI CONTROL SYSTEMS

2.5 AUDIO SENSORS: SWITCHES, POTENTIOMETERS & MICROPHONES

2.6 AUDIO ACTUATORS: LED'S & LOUDSPEAKERS

2.7 TUTORIAL- WORKING WITH COMPONENTS

2.8 EXAMPLE PROJECT- SENSOR CONTROL OF LED OUTPUT

2.8.1 Circuit Design

2.9 CONCLUSIONS

2.10 SELF- STUDY QUESTIONS

3 DC CIRCUITS

3.1 OHM'S LAW & DIRECT CURRENT

3.1.1 Worked Example- Calculating A Resistor Value

3.2 KIRCHOFF'S VOLTAGE LAW: SERIES CIRCUITS

3.2.1 Worked Examples- Calculating Series Resistance

3.2.2 Worked Example- Calculating Series Resistor Voltages

3.3 VOLTAGE DIVIDERS

3.3.1 Worked Examples- Voltage Dividers

3.4 KIRCHOFF'S CURRENT LAW: PARALLEL CIRCUITS

3.4.1 Worked Examples-- Calculating Parallel Resistance

3.4.2 Worked Examples- Calculating Parallel Current

3.5 TUTORIAL: LIMITING CURRENT TO PROTECT COMPONENTS

3.6 EXAMPLE PROJECTS: SERIES & PARALLEL CIRCUITS

3.6.1 Series Circuit Project

3.6.2 Parallel Circuit Project

3.7 CONCLUSIONS

3.8 SELF-STUDY QUESTIONS

4 DIGITAL SYSTEMS 1- ARDUINO OUTPUT

4.1 MICROPROCESSOR CONTROL SYSTEMS

4.2 INSTRUCTION TYPES- SEQUENCE INSTRUCTIONS

4.3 EXAMPLE PROJECT 1- ARDUINO DIGITAL OUTPUT

4.4 DATA TYPES- VARIABLES

4.5 EXAMPLE 2- MULTIPLE DIGITAL OUTPUTS

4.6 FUNCTIONS- ENCAPSULATING CODE

4.7 TUTORIAL- HOW TO WRITE CODE PART 1

4.8 EXAMPLE 3- REUSING CODE WITH FUNCTIONS

4.9 ANALOGUE OUTPUT- PULSE WIDTH MODULATION

4.10 EXAMPLE PROJECT- AUTOMATIC TONE PLAYER

4.11 CONCLUSIONS

4.12 SELF- STUDY QUESTIONS

5 DIGITAL SYSTEMS 2- ARDUINO INPUT

5.1 PROGRAMMING RECAP

5.2 DATA STRUCTURES & ITERATION- ARRAYS & LOOPS

5.3 EXAMPLE 1- TONE ARRAY OUTPUT

5.4 WORKING WITH EXTERNAL LIBRARIES- SERIAL MIDI OUTPUT

5.5 EXAMPLE 2- MIDI SEQUENCE PLAYER

5.6 CONDITIONS & DIGITAL INPUT

5.7 TUTORIAL- HOW TO WRITE CODE PART II

5.8 EXAMPLE 3- MIDI SWITCH CONTROLLER OUTPUT

5.9 ANALOGUE INPUT- PERCUSSION SAMPLING

5.10 FINAL PROJECT: MIDI DRUM TRIGGER

5.11 CONCLUSIONS

5.12 SELF- STUDY QUESTIONS

6 AC CIRCUITS

6.1 AUDIO SIGNAL FUNDAMENTALS- SINE WAVES

6.1.1 Worked Example- Varying the Speed of Sound

6.2 AC SIGNALS- AMPLITUDE, FREQUENCY & PHASE

6.2.1 Worked Examples- Finding the Instantaneous Voltage of a Sine Wave Input Signal

6.3 CAPACITANCE- STORING CHARGE OVER TIME

6.3.1 Worked Example- Calculating the Charge on a Capacitor

6.3.2 Worked Example- Calculating Capacitive Reactance for Different Input Frequencies

6.4 IMPEDANCE- COMBINING AC COMPONENTS

6.4.1 Worked Examples- Analysing Combined Resistive and Reactive Circuits

6.5 TUTORIAL: INSTALLING LTSPICE

6.6 EXAMPLE PROJECT- AC ANALYSIS WITH LTSPICE

6.6.1 Example Project- Circuit 1

6.6.2 Example Project- Circuit 2

6.7 CONCLUSIONS

6.8 SELF-STUDY QUESTIONS

7 AUDIO AMPLIFIERS

7.1 AMPLIFICATION

7.1.1 Worked Examples- Calculating Decibel Gain Values

7.2 SEMICONDUCTORS- DIODES

7.3 SEMICONDUCTORS: TRANSISTORS

7.3.1 Worked Example- Simulating BJT Characteristic Curves Using LTspice

7.3.2 Worked Example- Simulating A Common Emitter Amplifier With LTspice

7.4 OPERATIONAL AMPLIFIERS

7.4.1 Worked Example- Simulating an Inverting Amplifier With LTspice

7.5 DC BLOCKING, POWER DECOUPLING & ZOBEL NETWORKS

7.6 EXAMPLE PROJECT: BUILDING AN AUDIO AMPLIFIER

7.7 CONCLUSIONS

7.8 SELF-STUDY QUESTIONS

8 AUDIO FILTERS

8.1 DECIBELS & EQUAL LOUDNESS

8.2 FILTER CHARACTERISTICS & BODE PLOTS

8.3 1ST ORDER LOW PASS FILTER

8.3.1 Worked Example- Designing a 1st Order Low Pass Filter

8.3.2 Worked Example- Simulating a 1st Order Low Pass Filter Using LTspice

8.4 1ST ORDER HIGH PASS FILTER

8.4.1 Worked Example- Designing a 1st Order High Pass Filter

8.4.2 Worked Example- Simulating a 1st Order High Pass Filter with LTspice

8.4.3 Worked Example- Reading & Writing Audio Files with LTspice

8.5 CONTROLLING AUDIO FILTERS

8.6 EXAMPLE PROJECT- AUDIO AMPLIFIER WITH 2-BAND EQUALIZER

8.7 CONCLUSIONS

8.8 SELF-STUDY QUESTIONS

9 ARDUINO AUDIO CONTROL

9.1 FINAL PROJECT OVERVIEW

9.1.1 Project Components

9.2 ARDUINO STATE CONTROL

9.2.1 Worked Example- Arduino State Control

9.3 ARDUINO DIGITAL FILTER CONTROL

9.4 FINAL PROJECT- ARDUINO CONTROLLED AUDIO AMPLIFIER WITH 2-BAND EQUALIZER

9.5 CONCLUSIONS

10 CONCLUSIONS

10.1 FUTURE WORK

10.1.1 Electronics Fundamentals

10.1.2 Arduino Control

10.1.3 Audio Electronics

10.2 FINAL NOTES

APPENDIX 1: SELF-STUDY QUESTIONS

APPENDIX 2: AC DERIVATIONS (CHAPTER 6)

Deriving Charge Over Time

Deriving an RC Time Constant

Deriving Capacitor Voltage

Deriving Capacitive Reactance

Deriving Series Impedance Magnitude

Deriving Series Capacitance

Deriving Parallel Capacitance

APPENDIX 3: RESISTOR VALUES