arduino/Arduino

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Arduino IDE 1.x

Stars: 14.6k
Forks: 7k
Open beginner issues: 0
Indexed issues: 635

Dominant language: Java
License: No license data
Last GitHub push: Oct 11, 2025
Latest indexed: Sep 14, 2026
Contributing guide: Contributing guide
Code of conduct: No code of conduct
Beginner labels: help wanted
PR merge metrics: No merged PRs in 30d

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635 open issues indexed

IDE fails to start: 'Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException' Open

Component: IDE Type: Bug

Difficulty 3/5 1-2 days Newbie friendliness 35/100

arduino/Arduino#12036 · 2 comments · Opened Feb 26, 2025
Bug in BOSSA (bossac) on macOS prevents flashing parts Open

Architecture: SAMD Component: Toolchain Component: Uploading

Difficulty 3/5 1-2 days Newbie friendliness 35/100

arduino/Arduino#12025 · Opened Dec 22, 2024
Compilation fails spuriously: "avr-g++: internal compiler error: Killed: 9 (program cc1plus)" Open

Architecture: AVR Component: Compilation Component: Toolchain OS: OSX Type: Bug

Difficulty 4/5 3-5 days Newbie friendliness 25/100

arduino/Arduino#11997 · Opened Oct 23, 2024
Broken (unnecessarily munged) repo hyperlinks in library reference pages Open

Component: Website Type: Bug

Difficulty 3/5 1-2 days Newbie friendliness 38/100

arduino/Arduino#11996 · Opened Oct 21, 2024
[Uno R4 minima, IDE 1.8.19, MS Windows 10] serial monitor does't reconnect after board reset Open

Component: IDE Serial monitor Type: Bug

Difficulty 4/5 3-5 days Newbie friendliness 35/100

arduino/Arduino#11932 · 1 reaction · Opened Nov 21, 2023
Burn bootloader to 32u4 fails Open

Architecture: AVR Component: Uploading Type: Bug

Difficulty 4/5 3-5 days Newbie friendliness 30/100

arduino/Arduino#11907 · 3 comments · Opened Aug 29, 2023
Library reference pages may list incompatible boards in the compatibility list Open

Component: Website Type: Bug

Difficulty 2/5 1-3 hours Newbie friendliness 55/100

arduino/Arduino#11871 · 5 comments · Opened Mar 16, 2023
Updating/Downgrading Arduino-Pico core fails at file extraction Open

Type: Bug Waiting for feedback

arduino/Arduino#11842 · 4 comments · 2 reactions · 1 assignee · Opened Nov 27, 2022
Wire.h signature uint8_t requestFrom(uint8_t, uint8_t); (and others) missing in ArduinoCore-megaavr Open

Library: Wire Type: Bug

Difficulty 2/5 1-3 hours Newbie friendliness 50/100

arduino/Arduino#11820 · 2 reactions · Opened Sep 18, 2022
Trojan:Win32/PackBackdoor ? Open

Component: IDE security Type: Bug

arduino/Arduino#11815 · 6 comments · 2 assignees · Opened Aug 22, 2022
Bug? VERY predictable output from random() Open

Component: Core Type: Bug

Difficulty 4/5 3-5 days Newbie friendliness 35/100

arduino/Arduino#11811 · 2 comments · Opened Jul 26, 2022
Window 10 Monitor Copy fails (empty clipboard) when first char included in the selection Open

Component: IDE Serial monitor Type: Bug

Difficulty 3/5 1-2 days Newbie friendliness 45/100

arduino/Arduino#11810 · 1 comment · Opened Jul 22, 2022
appdata.xml only installed for simple install on linux with install.sh Open

OS: Linux Type: Bug

Difficulty 2/5 1-3 hours Newbie friendliness 52/100

arduino/Arduino#11806 · Opened Jul 16, 2022
Arduino Port Changes after Uploading Open

Component: Uploading Type: Bug

Difficulty 4/5 3-5 days Newbie friendliness 30/100

arduino/Arduino#11804 · 2 comments · Opened Jul 15, 2022
Upload to Leonardo sometimes fails with Permission denied Open

Component: Uploading Type: Bug

Difficulty 3/5 1-2 days Newbie friendliness 42/100

arduino/Arduino#11797 · 1 comment · Opened Jun 15, 2022
Git build: Exception in thread "MessageSiphon" java.lang.NoSuchMethodError Open

Component: IDE Type: Bug

Difficulty 4/5 3-5 days Newbie friendliness 35/100

arduino/Arduino#11795 · 1 comment · Opened Jun 10, 2022
Unable to start Arduino IDE 1.8.19.0 Open

Type: Bug

Difficulty 4/5 3-5 days Newbie friendliness 25/100

arduino/Arduino#11793 · 2 comments · Opened Jun 9, 2022
documentation of file.rewindDirectory() is ambiguous and confusing Open

Component: Documentation Library: SD Type: Bug

arduino/Arduino#11734 · 19 comments · 1 assignee · Opened Dec 29, 2021
Suggestion that BaseNoGui.java change how VERSION_NAME is defined, to made 'local mods' easier Open

Component: IDE feature request

Difficulty 1/5 Under an hour Newbie friendliness 45/100

arduino/Arduino#11708 · Opened Nov 23, 2021
Serial Monitor fails to set 250000 baud rate with error message. Open

Component: IDE Serial monitor Type: Bug

Difficulty 4/5 3-5 days Newbie friendliness 30/100

arduino/Arduino#11705 · 2 comments · Opened Nov 19, 2021
ISR definitions create symbol conflict Open

Component: Core feature request

Difficulty 5/5 Over a week Newbie friendliness 32/100

arduino/Arduino#11674 · 4 comments · Opened Oct 1, 2021
Arduino IDE deletes entire contents of build.path directory Open

Component: Documentation feature request

Difficulty 4/5 3-5 days Newbie friendliness 35/100

arduino/Arduino#11672 · 2 comments · Opened Sep 30, 2021
Setting an Input Pin to High would be helpfull of a Warning of the Arduino IDE Software Open

Component: Core feature request

Difficulty 5/5 Over a week Newbie friendliness 25/100

arduino/Arduino#11647 · 3 comments · 1 reaction · Opened Aug 13, 2021
LiquidCrystal Library is missing Example "CustomCharacter" Open

Component: Documentation in progress Library: LiquidCrystal Type: Bug

arduino/Arduino#11645 · 4 comments · 1 assignee · Opened Aug 9, 2021
Arduino SD class / File class: feature request: readln() missing (... and more...) Open

Component: Core feature request

Difficulty 3/5 1-2 days Newbie friendliness 35/100

arduino/Arduino#11635 · 2 comments · Opened Jul 25, 2021
Improvement for portable ide (linux) Open

Component: IDE feature request OS: Linux

Difficulty 5/5 Over a week Newbie friendliness 25/100

arduino/Arduino#11621 · Opened Jun 30, 2021
Inconsistent display of C vs C++ style comments Open

Component: IDE Type: Bug

Difficulty 3/5 1-2 days Newbie friendliness 35/100

arduino/Arduino#11602 · 1 comment · Opened Jun 19, 2021
Resources consumed by HardwareSerial even when not actually used Open

Component: Core Type: Bug

Difficulty 4/5 3-5 days Newbie friendliness 35/100

arduino/Arduino#11597 · 3 comments · Opened Jun 15, 2021
Memory Leak in arduino IDE Open

Component: IDE Type: Bug

Difficulty 4/5 3-5 days Newbie friendliness 25/100

arduino/Arduino#11590 · 2 comments · Opened Jun 9, 2021
⚠️ New Library Manager submission/update system! Open

Component: Board/Lib Manager

Difficulty 5/5 Over a week Newbie friendliness 10/100

arduino/Arduino#11588 · 2 comments · 8 reactions · Opened Jun 7, 2021
"pwsh not found in %PATH%" on Windows + MacOS Open

Component: IDE Type: Bug

Difficulty 4/5 3-5 days Newbie friendliness 35/100

arduino/Arduino#11565 · 1 comment · 1 reaction · Opened May 27, 2021
Tools overridden via --prefs are persistent Open

Component: IDE Type: Bug

arduino/Arduino#11556 · 1 assignee · Opened May 25, 2021
[Arduino IDE] Overlapping tooltip bug, when using multiple tabs Open

Component: IDE user interface Type: Bug

Difficulty 3/5 1-2 days Newbie friendliness 48/100

arduino/Arduino#11538 · Opened May 18, 2021
How can I add unofficial list of 3rd party boards support urls? Open

Component: Board/Lib Manager Type: Bug

Difficulty 2/5 1-3 hours Newbie friendliness 30/100

arduino/Arduino#11524 · 5 comments · Opened May 13, 2021
Extending communication timeouts Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

arduino/Arduino#11689 · Opened May 12, 2021
arduino-1.8.13-linuxarm Install fails with No such file or directory and cannot create /root/.config/mimeapps.list.new Open

Component: IDE OS: Linux Type: Bug

Difficulty 2/5 1-3 hours Newbie friendliness 45/100

arduino/Arduino#11502 · Opened May 8, 2021
Documentation for stream.find() and derivatives is too sparse Open

Component: Documentation Type: Bug

arduino/Arduino#11498 · 4 comments · 1 assignee · Opened May 8, 2021
Arduino IDE deleting project when disk is full. Open

Component: IDE Type: Bug

Difficulty 4/5 3-5 days Newbie friendliness 25/100

arduino/Arduino#11482 · 1 comment · Opened May 3, 2021
Please add uint32_t getClock() to the Wire library Open

feature request Library: Wire

Difficulty 2/5 1-2 days Newbie friendliness 45/100

arduino/Arduino#11457 · 1 comment · 2 reactions · Opened Apr 25, 2021
Network ports not availabe for OTA, albeit network connections exist in WiFi domain. Open

Component: Uploading Type: Bug

Difficulty 4/5 3-5 days Newbie friendliness 30/100

arduino/Arduino#11440 · 3 comments · Opened Apr 19, 2021
Remove seldom-used boards platforms from the primary package index Open

Component: Board/Lib Manager feature request

Difficulty 3/5 1-2 days Newbie friendliness 35/100

arduino/Arduino#11690 · 1 comment · 3 reactions · Opened Apr 18, 2021
Board manager = freeze on macos 11.2.3 Open

Component: Board/Lib Manager Type: Bug

Difficulty 4/5 3-5 days Newbie friendliness 35/100

arduino/Arduino#11412 · Opened Apr 7, 2021
Cannot install The .json Open

Component: Board/Lib Manager Type: Bug

Difficulty 4/5 3-5 days Newbie friendliness 20/100

arduino/Arduino#11406 · 1 comment · Opened Apr 5, 2021
ide-1.9.x-beta: code completion fails when any library is invalid Open

Component: IDE IDE 1.9.x Beta Type: Bug

Difficulty 3/5 1-2 days Newbie friendliness 42/100

arduino/Arduino#11403 · 1 comment · Opened Apr 4, 2021
Bug: When I open the Library Manager, java.util.ConcurrentModificationException gets thrown. Open

Component: Board/Lib Manager Type: Bug

Difficulty 3/5 1-2 days Newbie friendliness 35/100

arduino/Arduino#11390 · Opened Mar 29, 2021
Flash memory endurance Open

Component: Bootloader feature request

Difficulty 5/5 Over a week Newbie friendliness 25/100

arduino/Arduino#11374 · 1 comment · Opened Mar 25, 2021
Wire library consumes resources when included but not used Open

feature request Library: Wire

Difficulty 4/5 3-5 days Newbie friendliness 25/100

arduino/Arduino#11364 · Opened Mar 21, 2021
Serial Monitor may not display if the number of real monitors has changed or their placement has changed Open

Component: IDE Serial monitor Type: Bug

Difficulty 4/5 3-5 days Newbie friendliness 42/100

arduino/Arduino#11337 · Opened Mar 11, 2021
Arduino download page is displaying wrong date for Arduino IDE availability Open

Component: Website Type: Bug

arduino/Arduino#11320 · 5 comments · 1 assignee · Opened Mar 2, 2021
Long lines overwritten in output panel Open

Component: IDE Component: IDE user interface Type: Bug

Difficulty 3/5 1-2 days Newbie friendliness 35/100

arduino/Arduino#11300 · 3 comments · Opened Feb 25, 2021

arduino/Arduino

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