esp8266/Arduino

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ESP8266 core for Arduino

Stars: 16.7k
Forks: 13.1k
Open beginner issues: 0
Indexed issues: 328

Dominant language: C++
License: LGPL-2.1
Last GitHub push: Aug 27, 2026
Latest indexed: Sep 15, 2026
Contributing guide: No contributing guide
Code of conduct: No code of conduct
Beginner labels: help wanted
PR merge metrics: No merged PRs in 30d

Beginner friendly Everything

Open All

328 open issues indexed

The lwIP_enc28j60 driver does not handle Rx buffer overflow. Open

type: enhancement

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

esp8266/Arduino#8123 · 5 comments · Opened Jun 14, 2021
Interrupts httpcode returns -1 Open

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

esp8266/Arduino#8119 · 2 comments · Opened Jun 12, 2021
abs() macro in Arduino.h inverts signedness of (positive) 0.0F Open

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

esp8266/Arduino#8115 · Opened Jun 11, 2021
Migrate to ArduinoCore-API Open

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

esp8266/Arduino#8112 · 3 comments · Opened Jun 10, 2021
Proxy support request Open

type: enhancement

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

esp8266/Arduino#8086 · 7 comments · Opened May 30, 2021
Proxy support for ESP8266HTTPClient Open

waiting for feedback

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

esp8266/Arduino#8085 · 3 comments · Opened May 30, 2021
Problem with FastLed since 3.0.0 Open

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

esp8266/Arduino#8054 · 11 comments · Opened May 19, 2021
suggestion to change parameters of scanNetworks() to match the ones of ESP32 Open

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

esp8266/Arduino#8053 · 1 comment · Opened May 19, 2021
WifiClient cannot open connection over mobile broadband router? Open

waiting for feedback

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

esp8266/Arduino#8005 · 15 comments · Opened Apr 27, 2021
WiFi fpm sleep type checks in mode() Open

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

esp8266/Arduino#7975 · 4 comments · Opened Apr 12, 2021
Use of busy-wait inside IRAM_ATTR function: core_esp8266_waveform_pwm.cpp Open

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

esp8266/Arduino#7974 · Opened Apr 11, 2021
ESP32 has esp_arduino_version.h now, port this to ESP8266 Open

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

esp8266/Arduino#7967 · 2 comments · Opened Apr 8, 2021
no more 802.11n connection since 2.6.0 Open

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

esp8266/Arduino#7965 · 103 comments · 3 reactions · Opened Apr 6, 2021
SPIClient client response messages are shredded and useless, but here is how i fixed it. Open

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

esp8266/Arduino#7926 · Opened Mar 16, 2021
Turn-off Broadcast/Multicast Open

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

esp8266/Arduino#7907 · 3 comments · Opened Mar 4, 2021
twowire i2c library don't work with multiple instance Open

component: core component: libraries type: enhancement

esp8266/Arduino#7894 · 1 comment · 1 assignee · Opened Feb 26, 2021
Broken link Online Help in Arduino IDE Open

component: packaging type: bug

esp8266/Arduino#7893 · 2 comments · 1 assignee · Opened Feb 25, 2021
MDNS does not start during setup, if use With ArduinoOTA Open

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

esp8266/Arduino#7861 · 12 comments · Opened Feb 5, 2021
ESP8266httpUpdate crashing occasionally when using WiFiClientSecure Open

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

esp8266/Arduino#7858 · Opened Feb 3, 2021
after auto-reconnection attempts, memory leaks and crashes occur. Exception 29 Open

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

esp8266/Arduino#7857 · 9 comments · Opened Feb 2, 2021
ESP8266 lags every 10-15min for a moment - evt: 7 error Open

Difficulty 4/5 3-5 days Newbie friendliness 32/100

esp8266/Arduino#7808 · 4 comments · Opened Jan 4, 2021
Error in BearSSL when attempting to connect to secure MQTT broker Open

waiting for feedback

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

esp8266/Arduino#7801 · 22 comments · Opened Dec 31, 2020
Use IPv6 Router Advertisement options for DNS configuration (RFC 8106) Open

component: network type: enhancement waiting for feedback

esp8266/Arduino#7798 · 5 comments · 1 assignee · Opened Dec 28, 2020
SPISlave.onData never get triggered Open

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

esp8266/Arduino#7796 · 4 comments · Opened Dec 26, 2020
WIFI + AVRISP + avrdude: can't upload hex file Open

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

esp8266/Arduino#7725 · 9 comments · Opened Nov 27, 2020
Further transparent integration of compressed updates? Open

component: OTA type: enhancement

esp8266/Arduino#7693 · 3 comments · 1 assignee · Opened Nov 6, 2020
HTTPClient library only allows Basic authorization Open

waiting for feedback

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

esp8266/Arduino#7688 · 6 comments · 1 reaction · Opened Nov 2, 2020
Example HelloServer can't connect, but ESP-Link can Open

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

esp8266/Arduino#7687 · 9 comments · Opened Nov 1, 2020
Should schedule_function() call esp_schedule()? Open

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

esp8266/Arduino#7661 · 31 comments · Opened Oct 17, 2020
PPP packets from Serial on interrupt basis Open

Difficulty 5/5 Over a week Newbie friendliness 20/100

esp8266/Arduino#7646 · 11 comments · Opened Oct 8, 2020
Separate flash write API into raw and quirk-handling versions Open

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

esp8266/Arduino#7644 · 12 comments · Opened Oct 7, 2020
HNAP calls on dhcp-server in AP mode causes an exception Open

component: network help wanted type: bug

esp8266/Arduino#7601 · 35 comments · 1 assignee · Opened Sep 16, 2020
OTA Web server documentation is invalid Open

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

esp8266/Arduino#7592 · 1 comment · Opened Sep 11, 2020
Update of NONOS_SDK to 3.0.4+ Open

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

esp8266/Arduino#7575 · 6 comments · 1 reaction · Opened Sep 3, 2020
If Station was connected to an AP that offered 2 DNS via dhcps and then connects to another AP that only offers 1 DNS, WiFi.dnsIP(1) keeps reporting the second DNS from the previous connection. Open

component: core component: network type: bug

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

esp8266/Arduino#7568 · 1 reaction · Opened Sep 1, 2020
Additional tweaks to NetDump #7527 Open

type: code cleanup type: enhancement

esp8266/Arduino#7564 · 1 assignee · Opened Aug 30, 2020
debug option provided by gcc10: -fanalyzer Open

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

esp8266/Arduino#7561 · 1 comment · Opened Aug 29, 2020
ESP8266WebServer HTTPUpload does not support non-file fields Open

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

esp8266/Arduino#7533 · 1 comment · Opened Aug 17, 2020
mdns responder stops responding Open

component: MDNS

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

esp8266/Arduino#7448 · 2 comments · Opened Jul 12, 2020
Large stack usage in core and MDNS libraries Open

component: core component: MDNS type: code cleanup

Difficulty 5/5 Over a week Newbie friendliness 35/100

esp8266/Arduino#7398 · 6 comments · 3 reactions · Opened Jun 22, 2020
noTone() does not release timer1 Open

esp8266/Arduino#7364 · 7 comments · 1 assignee · Opened Jun 9, 2020
Setting timezone with setenv doesn't work properly any more with V 2.7.1 Open

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

esp8266/Arduino#7353 · 13 comments · Opened Jun 6, 2020
ESP8266 esp-12 tcp server disconnect from client Open

Difficulty 3/5 1-2 days Newbie friendliness 32/100

esp8266/Arduino#7274 · 1 comment · Opened May 6, 2020
Error(-11): read Timeout for long JSON in POST requests Open

waiting for feedback

esp8266/Arduino#7246 · 7 comments · 1 reaction · 1 assignee · Opened Apr 24, 2020
ESP8266WiFiMesh.h private typedefs prevent new'ing object Open

esp8266/Arduino#7171 · 2 comments · 1 assignee · Opened Mar 28, 2020
ESP8266 triggers ICMP Flood DoS on router (was New router from ISP and now no ESP8266 modules will connect) Open

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

esp8266/Arduino#7160 · 8 comments · Opened Mar 20, 2020
Implement low power mode api Open

component: core component: examples help wanted type: enhancement

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

esp8266/Arduino#7055 · 13 comments · Opened Feb 2, 2020
Missing Documentation for ESP8266HTTPClient Open

component: documentation type: enhancement

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

esp8266/Arduino#7045 · Opened Jan 29, 2020
DHCPDISCOVER every 5 minutes, ignores server lease time Open

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

esp8266/Arduino#7020 · 13 comments · Opened Jan 17, 2020
HTTP_UPDATE_FAILD Error (-104): Wrong HTTP Code Open

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

esp8266/Arduino#6971 · 2 comments · Opened Jan 1, 2020

esp8266/Arduino

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