Arduino Stack Exchange is a question and answer site for developers of open-source hardware and software that is compatible with Arduino. It only takes a minute to sign up.

Sign up to join this community
Anybody can ask a question
Anybody can answer
The best answers are voted up and rise to the top

Top Questions

0 votes
0 answers
34 views

I need help for applying a logic to this code

2 votes
1 answer
329 views

Nema 17 stepper motor speed problem

0 votes
0 answers
7 views

nrf24l01 not communicating with each other

-1 votes
0 answers
18 views

Is it possible to get 1 ultrasonic sensor and 1 lidar lite v3 sensor to work on one Arduino?

-1 votes
1 answer
23 views

Unsure how to get started on lighting project [closed]

-1 votes
0 answers
20 views

Wemos D1 ESP8266 White display [closed]

0 votes
0 answers
35 views

How to communicate with nodemcu from anywhere?

-1 votes
0 answers
19 views

Help finding bug regarding MCP23S17 switching pin between input and output

1 vote
0 answers
22 views

LCD Wiki screen works on Mega. How to get it working on the Due?

3 votes
2 answers
5k views

Avoiding float math to speed up arduino

0 votes
0 answers
22 views

While I was trying to upload a code in arduino nano I got this error : [duplicate]

1 vote
2 answers
144 views

Arduino button voltage versus HIGH/LOW state

1 vote
1 answer
292 views

LILYGO TTGO T-Display cannot detect MPU 6050 Accelerometer, Gyroscope and Temperature Sensor

-1 votes
0 answers
26 views

Arduino Talkie library support for ch3v003?

-1 votes
0 answers
18 views

How do you connect (or enable the A0, analog input, in my case a sound sensor) with a CNC shield? [closed]

1 vote
2 answers
5k views

DS3231 RTC module and battery problem

0 votes
1 answer
114 views

Use class object inside an ISR

1 vote
0 answers
757 views

How to send AT Commands by code using Arduino uno, ESP 8266 01 [closed]

2 votes
1 answer
143 views

Connecting Arduino Uno's TX pin directly to Esp8266 esp-01

1 vote
1 answer
87 views

PWM and attachInterrupts issues

0 votes
0 answers
68 views

I need help with serial communication between Arduino Uno and NodeMCU [closed]

2 votes
1 answer
96 views

What type of pin header is this?

-3 votes
0 answers
105 views

OLED & Functions

-1 votes
0 answers
58 views

Program blue pill with with Arduino IDE? [closed]

0 votes
0 answers
41 views

Can't get timer 2 to work on PD3 [closed]

3 votes
2 answers
666 views

Bluetooth communication not working with DC power but works with USB power?

-2 votes
0 answers
64 views

Looking for best methods of remaking the code without changing its functionality, but reducing the code amount by ~10 times [closed]

0 votes
1 answer
44 views

GPS module Serial.begin value

-1 votes
0 answers
28 views

Arduino voltage divider Vx to mm [closed]

0 votes
0 answers
17 views

Arduino Uno Carrier board not responding [duplicate]

2 votes
1 answer
51 views

First Uses of Digispark can't get past upload error

1 vote
0 answers
27 views

Feather M0 RFM69 serial over radio IP over serial works for UDP packets but fails for TCP sessions

2 votes
0 answers
60 views

How can I connect my ESP32-WROOM-32 to Arduino IDE?

-2 votes
0 answers
28 views

How to power a microcontroller with solar power? [closed]

1 vote
1 answer
271 views

Why can the Xbox360 not detect the Arduino Leonardo as keyboard?

1 vote
4 answers
2k views

What does avrdude: Device signature = 0x000000 mean? Faulty wiring? Software issue? Incorrect tutorial?

-1 votes
0 answers
47 views

Teensy 4.0 is not recognized by xbox 360 as a usb keyboard [closed]

-2 votes
0 answers
39 views

Здравствуйте почему у меня не выделяется зелёным команда OUTPUT? [closed]

0 votes
0 answers
46 views

Arduino IDE 2.2.1 stuck in blank and does not let me write or load any code, no board is detected either

-1 votes
1 answer
31 views

Help with circuit design for 12V vacuum pump and MOSFET [closed]

-1 votes
2 answers
43 views

Do I connect multiple I2C units to the microcontroler in series or parallel?

-1 votes
1 answer
33 views

Using ESP32CAM board but no face is enrolled

44 votes
4 answers
49k views

Why does starting the serial monitor restart the sketch?

0 votes
3 answers
2k views

`.readFileCounts()` not working on DFPlayer mini module

1 vote
1 answer
74 views

ESP32 SPI Mutual Communication

-1 votes
0 answers
17 views

How To Extract Code of simulink S-Function builder from mpu6050_light library [closed]

1 vote
2 answers
206 views

Communicating via Serial Monitor but not able to get comms via Terminal outside of Arduino IDE

3 votes
1 answer
551 views

How to configure I2S with ESP32 and MAX98357A to reproduce wav files?


Looking for more? Browse the complete list of questions, or popular tags. Help us answer unanswered questions.