| CARVIEW |
Select Language
HTTP/2 200
date: Sun, 27 Jul 2025 17:35:03 GMT
content-type: text/html; charset=utf-8
cf-ray: 965de41e3837c17c-BLR
cf-cache-status: DYNAMIC
cache-control: private
set-cookie: prov=9f840012-d303-490d-8060-221dc9c59164; expires=Mon, 27 Jul 2026 17:35:03 GMT; domain=.stackexchange.com; path=/; secure; httponly
strict-transport-security: max-age=31536000; includeSubDomains
vary: Accept-Encoding
content-security-policy: upgrade-insecure-requests; frame-ancestors 'self' https://stackexchange.com
x-clacks-overhead: GNU Terry Pratchett
x-frame-options: SAMEORIGIN
x-request-guid: 2e79aa92-ca0c-4ff2-9013-9cfd4acc765e
x-worker-origin-response-time: 432000000
x-dns-prefetch-control: off
set-cookie: prov=9f840012-d303-490d-8060-221dc9c59164; Path=/; HttpOnly; Domain=stackexchange.com
set-cookie: __cf_bm=TySkt10dv7ymuQbzy2TpdbCpx8thirzT4gePXerSi4I-1753637703-1.0.1.1-TA0PzCJMBuHNkF9GWL8VXNIwTDqao7XKVxtSb36Zq0cO1cpddQ1yi_KqpVfzaTa.lHq0QmFZ6zo9I12f8tLpwT0sg091EES3EwRbzIQouYU; path=/; expires=Sun, 27-Jul-25 18:05:03 GMT; domain=.stackexchange.com; HttpOnly; Secure; SameSite=None
set-cookie: _cfuvid=69apOp2H2sfydg72ejtvc4Y.BRBJRFxR9ZvqnzbZ2lA-1753637703840-0.0.1.1-604800000; path=/; domain=.stackexchange.com; HttpOnly; Secure; SameSite=None
server: cloudflare
content-encoding: gzip
Newest 'serial' Questions - Arduino Stack Exchange
Skip to main content
Stack Exchange Network
Stack Exchange network consists of 183 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.
Visit Stack Exchange
Teams
Q&A for work
Connect and share knowledge within a single location that is structured and easy to search.
Learn more about TeamsQuestions tagged [serial]
Serial communication is the standard USB connection between the Arduino and a computer with a standard USB A to B cable or through the TX/RX pins using a USB to serial converter. It can also refer to the serial library.
2,165 questions
- Bountied 0
- Unanswered
- Frequent
- Score
- Trending
- Week
- Month
- Unanswered (my tags)
1
vote
1
answer
88
views
Reading JSON from Arduino via Serial Missing Parts of Message
I have a project (Digital Dashboard for a Motorhome) in Pi that reads JSON data from an Arduino board and sends it via Serial.
The Pi gets the JSON data, makes some adjustments and then sends it to an ...
0
votes
1
answer
57
views
Arduino HardwareSerial flow control with handshake XON/XOFF
I am sending large texts from PC to Arduino over Serial and I cannot simply copy-paste it, as Arduino is not fast enough to process it on the fly.
I need some flow control (probabely XON/XOFF) so ...
- 1,466
2
votes
1
answer
66
views
ESP32 and Fingerprint Sensor – Serial Monitor Shows Nothing
I'm trying to connect a fingerprint sensor (Adafruit type) to my ESP32 (DOIT ESP32 Devkit V1), but the Serial Monitor remains completely blank, even though I'm using Serial.begin(9600) and printing ...
1
vote
1
answer
52
views
When I run my for loop the serial monitor is giving very strange results
This is unfinished code for driving a 4 digit 7 segment display. When I run my data function that should output the data to send to the shift register, I get a very weird output.
0 00111111
1 00111111
...
0
votes
3
answers
111
views
How do I read only the first character from serial monitor input and then the second up characters?
So I want to variably set the voltage going to one of RGB_LED's pins . The way I thought of doing it is to write the quantificator into the serial monitor with the first byte representing the variable ...
2
votes
2
answers
110
views
Problem sending serial data between Arduino and ATtiny back and forth
I am working on communication between a Arduino and ATtiny13, and I need to get this bare-bone communication to work. There is a Arduino Nano powered by USB cable from the PC, and there is ATtiny13 ...
-1
votes
1
answer
76
views
Looking for a library to operate LEDs using FastLED via serial communication from another device running Python
I have an LED display connected to a Teensy microcontroller using the FastLED library, which is connected to a Raspberry Pi Zero running Python via a USB hub.
I am looking for an existing library that ...
0
votes
2
answers
58
views
Using TX as gpio, while using RX as serial pin to read data from other uC - Arduino atmega8
I am having a circuit that I am using the RX pin to receive data (int) from other uC (ESP12E) as one way communication, and for the lack of pins I had to use the TX pin as GPIO for a digit of a seven ...
-1
votes
1
answer
131
views
Arduino IDE Serial Monitor is working, but not Putty - esp8266
I have an esp8266 that most often won't work with Putty, but always works with Serial Monitor in Arduino IDE.
Baudrate is set to 115200. Putty fills the terminal window with odd characters and the ...
0
votes
0
answers
87
views
Input/Output error upload with arduino-cli / avrdude
Unpacked my first Arduino today, an Uno. Went to try the instructions from the arduino-cli getting started tutorial.
When I connect the unit with USB, I get three quick flashes, then slow continual ...
2
votes
1
answer
74
views
UART Transmission Incorrect on ATTiny826
I'm currently trying to test an extremely simple circuit where I use an ATTiny86 to output some arbitrary values via serial to an Arduino micro. The problem I am facing is that all of the values being ...
2
votes
2
answers
674
views
Arduino Uno Serial.write() how many bits are actually transmitted at once by UART and effect of baudrate on other interrupts
With Arduino Uno Rev3, I am trying to maintain a delicate timing while handling data transmission. I want to send 6 bytes at a time, which takes around ~44 us when I time Serial.write(). The time it ...
0
votes
1
answer
73
views
Arduino TFT Touch Screen Interface Only Returns One Button Option
I'm trying to create an arduino code that returns a value for the button that was pressed as the user choice. However, whichever button I press the only return is 2. Also, whenever pressing other ...
3
votes
1
answer
236
views
Common Ground Between Arduino and ESP32 - Can I Re-use the ESP32 GND Pin for a Potential Divider
I am trying to connect an ESP32 to an Arduino Mega via Serial Communication using the UART 2 ports on both microcontroller boards.
There needs to be a common ground between the ESP32 and Arduino. ...
1
vote
1
answer
63
views
Interpreting Analog Output from Aalborg Mass Flow Meter GFM
I am attempting to connect this device to my computer via RS232.
I am debating the simplest way of going about this and was inquiring if my Uno R3 could come into use, turning the analog symbols of 0-...
- The Overflow Blog
-
-
- Featured on Meta
-
-
Related Tags
arduino-uno × 672
softwareserial × 201
arduino-mega × 199
programming × 133
communication × 131
usb × 124
esp8266 × 106
arduino-nano × 106
uart × 102
python × 93
arduino-ide × 93
bluetooth × 92
serial-data × 76
c++ × 72
string × 67
sensors × 61
arduino-due × 54
arduino-leonardo × 41
esp32 × 41
i2c × 38
array × 38
interrupt × 35
xbee × 35
atmega328 × 32
gsm × 32
more related tags
Hot Network Questions
- When did the OEIS get even better?
- Anonymizing a submission for double-blind review
- “Unclear step in a math book for entertainment”
- Is it possible to use the PC power button to pre-select the OS in rEFInd UEFI dual boot setup?
- 3D projective transformations on text in LuaMetaFun
- Mac Pro 2008 almost dead
- A question about as ..... as comparison
- Blinded despite Blindsight?
- Forces applied to a car hood while driving
- Lower bound on ratio of expected maxima of i.i.d. samples from distribution on [0,1]
- Still learning electronics, can you explain this voltage protector failure?
- What were the two colored keys on a MUPID for?
- What is the best interpretation of Psalm 6:4? Does "Turn" or "Return" capture the intended meaning?
- rock paper scissors game with randomized system choices. NOT using rnd()
- Are classified documents subject to a subpoena in discovery?
- Symbols for A.P. Morse's book in Set Theory
- Why did the Holy Spirit send Jesus to the wilderness to be tempted by Satan?
- Sci-fi book where aliens make contact, ask humans to transport themselves to nearby portal
- How do Japanese people understand the reading of a single kanji with multiple readings in their everyday life?
- What is the meaning of 'Tel.......,qui......'
- I don't understand Photos Library.photoslibrary
- Why are police personnel of all ranks called officers?
- Meaning of 芭蕉 in Tang age
- In Fantastic Four 2025 shouldn't this thing have taken years?