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

Explore our questions

1 vote
1 answer
196 views

Coding for RTC and stepper motor

0 votes
0 answers
3 views

Electromagnet not Turning Off when Entering Password

2 votes
1 answer
62 views

How to increase the frequency of data transmission of SIM900A GSM Module connected to Arduino Uno?

1 vote
2 answers
252 views

How to set cables to connect Cp2102 to Pro Mini?

0 votes
1 answer
285 views

Format error with ESP8266 compile

1 vote
1 answer
24 views

One LED in 4x4 matrix does not turn on

0 votes
1 answer
206 views

Trying to connect to WiFi on ESP32 using credentials from SD card

2 votes
1 answer
82 views

Using Arduino to read and write data to RS232 device

1 vote
1 answer
222 views

Trying to instantiate a DS3231 real-time clock within a library

0 votes
1 answer
21 views

Arduino + ESP8266 to send MQTT messages

0 votes
1 answer
34 views

Why does keyboard.h add 136 to each key?

0 votes
0 answers
39 views

Connecting two 9 V batteries in parallel to power an ESP32?

-1 votes
0 answers
31 views

How to send data to a local server using Arduino Uno and ESP-01 8266?

0 votes
1 answer
100 views

High-range obstacle detection system

Browse more Questions