User Majenko

40 votes

Are global variables evil in Arduino?

arduino-mega coding-standards

answered Jul 11, 2017 at 13:19

40 votes

Accepted

Addressable RGB strip works fine individually but cannot set all LEDs to full white

rgb-led led-strip

answered Oct 28, 2019 at 0:08

29 votes

Accepted

deprecated conversion from string constant to 'char*'

programming arduino-ide c

answered Jul 14, 2015 at 15:10

27 votes

Why does Serial.print print only a value for 0-84 for a 100 integer array?

array

answered Apr 19, 2018 at 11:16

25 votes

Accepted

NodeMCU - Vin pin as 5V output?

pins nodemcu voltage

answered Apr 16, 2018 at 8:30

25 votes

How many times can I upload a program or sketch to my Arduino Uno Clone Board?

arduino-uno

answered Jun 18, 2018 at 17:41

24 votes

Using String instead of C string, yet another attempt to touch a loaded issue

c string c-string heap

answered Jul 13, 2021 at 17:41

20 votes

Why use an int variable for a pin when const int, enum or #define makes much more sense

variables c-preprocessor constants

answered Aug 14, 2015 at 9:12

20 votes

Accepted

Does an Arduino get worn out by too much command execution?

arduino-uno hardware code-optimization

answered May 20, 2017 at 13:16

20 votes

Accepted

Difference between these two NodeMCU boards?

esp8266 nodemcu hardware pcb-design

answered Jul 21, 2018 at 16:33

18 votes

Accepted

How to avoid that my arduino clicks eternally?

button

answered Jun 15, 2015 at 17:09

18 votes

Accepted

Why can't I define the constant A0 (some pin) to something?

programming c++

answered May 15, 2017 at 12:31

17 votes

Accepted

Can the Arduino interface with USB devices without the USB host shield?

usb

answered May 13, 2016 at 16:02

17 votes

Accepted

What to do with Arduino floating pins?

pins atmega328

answered Feb 24, 2020 at 18:22

16 votes

Accepted

Can I force Arduino not to be powered by USB?

arduino-mega power

answered Feb 19, 2018 at 16:28

16 votes

Accepted

Burning Arduinos one after another

hardware clones

answered Jul 31, 2017 at 15:14

15 votes

Why connect a diode between the reset pin of Arduino and 555 timer?

arduino-uno atmega328 electronics

answered Feb 7, 2018 at 14:39

15 votes

Accepted

Is it possible to print a custom object by passing it to Serial.print()?

esp8266 stream

answered Jun 19, 2018 at 14:32

14 votes

Accepted

Convert int to char[]

arduino-mega string c-string

answered Jul 24, 2017 at 20:26

14 votes

Accepted

Why is Serial.Write that slower when writing x+1 characters than when it is writing x characters?

serial performance

answered Sep 10, 2018 at 18:49

14 votes

What is the best technique to design a 20 push button circuit

arduino-mega button robotics

answered Aug 17, 2021 at 11:00

14 votes

Accepted

Can you use Serial Port as a variable?

serial variables

answered Oct 19, 2020 at 15:52

13 votes

Accepted

How to output a true analog voltage at output pin

arduino-uno pwm voltage-level analogwrite

answered Nov 28, 2016 at 10:26

13 votes

Accepted

ESP8266, Arduino IDE vs Lua?

arduino-ide esp8266 nodemcu

answered Jan 26, 2016 at 16:13

13 votes

Accepted

Why is there a clock in my arduino?

oscillator-clock

answered Feb 4, 2016 at 12:19

13 votes

Accepted

ATMEGA328P-U vs ATMEGA328-PU

atmega328

answered Jun 29, 2019 at 10:37

12 votes

Accepted

Arduino timers. How they work

timers

answered Aug 19, 2015 at 12:23

12 votes

Accepted

int VS uint8_t VS uint16_t

memory-usage variables memory

answered Nov 1, 2016 at 18:48

12 votes

Accepted

WiFi Password Safety

wifi

answered Aug 5, 2016 at 19:26

12 votes

Accepted

The difference between "time_t" and "DateTime"

arduino-uno timers time rtc

answered Nov 10, 2015 at 9:53

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3,698 Answers

Are global variables evil in Arduino?

Addressable RGB strip works fine individually but cannot set all LEDs to full white

deprecated conversion from string constant to 'char*'

Why does Serial.print print only a value for 0-84 for a 100 integer array?

NodeMCU - Vin pin as 5V output?

How many times can I upload a program or sketch to my Arduino Uno Clone Board?

Using String instead of C string, yet another attempt to touch a loaded issue

Why use an int variable for a pin when const int, enum or #define makes much more sense

Does an Arduino get worn out by too much command execution?

Difference between these two NodeMCU boards?

How to avoid that my arduino clicks eternally?

Why can't I define the constant A0 (some pin) to something?

Can the Arduino interface with USB devices without the USB host shield?

What to do with Arduino floating pins?

Can I force Arduino not to be powered by USB?

Burning Arduinos one after another

Why connect a diode between the reset pin of Arduino and 555 timer?

Is it possible to print a custom object by passing it to Serial.print()?

Convert int to char[]

Why is Serial.Write that slower when writing x+1 characters than when it is writing x characters?

What is the best technique to design a 20 push button circuit

Can you use Serial Port as a variable?

How to output a true analog voltage at output pin

ESP8266, Arduino IDE vs Lua?

Why is there a clock in my arduino?

ATMEGA328P-U vs ATMEGA328-PU

Arduino timers. How they work

int VS uint8_t VS uint16_t

WiFi Password Safety

The difference between "time_t" and "DateTime"