Introduction To The Arduino: What Can You Do With It‪?‬

Arduino is an open-source electronics platform based on easy-to-use hardware and software. Arduino boards can read inputs - light on a sensor, a finger on a button, or a Twitter message - and turn it into an output - activating a motor, turning on an LED, publishing something online.



In this book:

- How many analog signals can an Arduino UNO board acquire ""simultaneously""?

- Is it true that some Arduino boards based on the ATmega328 microcontroller allow two additional single-ended analog inputs?

- What is the maximum ADC input voltage allowed for an Arduino UNO board? And in the case of an Arduino ZERO?

- Is it somehow possible to acquire signals larger than the maximum ADC input voltage allowed for an Arduino UNO board?

- What is the ADC voltage resolution of an Arduino UNO board? And how does the resolution depend on the reference voltage?

- Can you increase the ADC resolution of an Arduino board?

- Is it true that the ADC of an Arduino UNO board offers a better resolution than the Raspberry Pi, Particle, Teensy, and BeagleBone boards? And compared to boards based on ESP8266EX or ESP32 modules?

- Is it reasonable to perform voltage measurements with a resolution of microVolts with an Arduino UNO board?

- How many digits make sense to display the ADC acquisitions?

- Is it proper to use 1023 or 1024 in the sketch for the voltage conversion formulas?

- After changing the analog reference voltage with the analogReference() function, how many ADC conversions must be discarded before they can be considered reliable for the acquisition?

- Is the Arduino UNO ADC more accurate than Leonardo, Yún, or Mega?

- Using Arduino boards with analog temperature sensors, can you measure temperatures with an accuracy of ±0.1°C?

- How does the power supply accuracy affect the ADC measurements of an Arduino board?

- Is it enough to acquire a sample every second to monitor the environment temperature?

- What is the actual conversion time of an Arduino UNO board?

- Can you use the Arduino UNO board to acquire analog audio signals?

- What is the oversampling technique?

- Does it make sense to implement a 13-bit oversampling with an Arduino UNO board?

- How can you make faster sketches and reduce their size by using fixed-point arithmetic?