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

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328 open issues indexed

getString() timeouts when the response is empty (return code 204) Open

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

esp8266/Arduino#6919 · 1 comment · 1 reaction · Opened Dec 17, 2019
Request: Add success/fail flag for webserver parse arguments Open

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

esp8266/Arduino#6884 · 5 comments · Opened Dec 6, 2019
esp8266 softap waiting all the time Open

Difficulty 4/5 3-5 days Newbie friendliness 28/100

esp8266/Arduino#6705 · 8 comments · Opened Nov 2, 2019
WiFiClient.connected() returns false while data are still available in receive buffer Open

esp8266/Arduino#6701 · 11 comments · 1 assignee · Opened Nov 2, 2019
Investigate breaking the max sketch size limit Open

help wanted

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

esp8266/Arduino#6681 · 10 comments · Opened Oct 28, 2019
WiFiClient cannot connect to IPv6 link local address Open

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

esp8266/Arduino#6626 · 5 comments · Opened Oct 10, 2019
[HELP] Where can I find the definition of the WiFI autoReconnect interval? Open

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

esp8266/Arduino#6622 · 5 comments · Opened Oct 8, 2019
WiFi.setOutputPower setting ignored after some time Open

Difficulty 4/5 3-5 days Newbie friendliness 45/100

esp8266/Arduino#6620 · Opened Oct 7, 2019
Exception (0) in SoftAP when SPIslave used Open

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

esp8266/Arduino#6564 · 2 comments · Opened Sep 28, 2019
ets_printf may not be safe for ISR debug printing Open

component: documentation

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

esp8266/Arduino#6529 · 3 comments · Opened Sep 17, 2019
HTTP_UPDATE_FAILD Error Open

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

esp8266/Arduino#6469 · 4 comments · Opened Aug 30, 2019
Documentation request: Ticker, attach_ms and attach_ms_scheduled Open

component: documentation component: examples

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

esp8266/Arduino#6451 · 3 comments · Opened Aug 26, 2019
refactor SPI class Open

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

esp8266/Arduino#6425 · 1 comment · Opened Aug 17, 2019
SPIClass::transfer(void *buf, uint16_t count) transfers with wrong block structure Open

Difficulty 1/5 Under an hour Newbie friendliness 38/100

esp8266/Arduino#6417 · 4 comments · Opened Aug 13, 2019
TCP long delay before re-transmission Open

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

esp8266/Arduino#6400 · 1 comment · Opened Aug 8, 2019
Exception(28) getting WIFi.status() Open

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

esp8266/Arduino#6385 · Opened Aug 5, 2019
Add a non-breaking extension to the OTA protocol for getting rid of UDP Open

component: OTA help wanted type: enhancement

esp8266/Arduino#6369 · 3 comments · 1 reaction · 1 assignee · Opened Aug 1, 2019
mDNS library does not send IPv6 packets and does not provide AAAA records Open

component: MDNS

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

esp8266/Arduino#6135 · 1 comment · Opened May 23, 2019
mDNS responder kills DHCP server on lwip v2 Open

component: MDNS component: network type: bug

Difficulty 4/5 3-5 days Newbie friendliness 28/100

esp8266/Arduino#6114 · 8 comments · 1 reaction · Opened May 19, 2019
eraseConfig() causes crashes Open

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

esp8266/Arduino#6063 · 7 comments · Opened May 10, 2019
Static DHCP Lease not working Open

waiting for feedback

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

esp8266/Arduino#6031 · 19 comments · Opened Apr 30, 2019
ESP8266 softAP webserver with GPS is not working. Open

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

esp8266/Arduino#5970 · 1 comment · Opened Apr 10, 2019
Client not reconnecting to AP (AP ISSUE) Open

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

esp8266/Arduino#5950 · 1 comment · Opened Apr 5, 2019
[REQUEST] WiFiMulti with BSSID... Open

waiting for feedback

Difficulty 4/5 3-5 days Newbie friendliness 38/100

esp8266/Arduino#5940 · 2 comments · Opened Apr 2, 2019
Creating IPv6 only network Open

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

esp8266/Arduino#5923 · 2 comments · Opened Mar 27, 2019
Hspi in slave mode miss interrupt when WIFI is enabled Open

help wanted

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

esp8266/Arduino#5921 · 8 comments · Opened Mar 26, 2019
ESP8266 Very Slow TCP Socket Transfer Speed Open

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

esp8266/Arduino#5918 · 9 comments · Opened Mar 26, 2019
Feature Request... Synchronize the WiFi (And WiFiMulti) APIs between ESP 8266 and ESP 32 Open

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

esp8266/Arduino#5911 · 4 comments · Opened Mar 25, 2019
WiFiClient drops connection while waiting for response from server. :rcl Open

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

esp8266/Arduino#5874 · Opened Mar 13, 2019
I can't use OTA update when ESP is an Access Point Open

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

esp8266/Arduino#5866 · 18 comments · 1 reaction · Opened Mar 11, 2019
Migrate core from NONOS SDK to FreeRTOS SDK Open

esp8266/Arduino#5790 · 42 comments · 8 reactions · 3 assignees · Opened Feb 19, 2019
Finalize callback list implementation, and migrate wifi events to use it. Open

component: core component: libraries type: enhancement

esp8266/Arduino#5781 · 5 comments · 1 assignee · Opened Feb 19, 2019
esp8266 Arduino package can't be used as referenced package Open

waiting for feedback

Difficulty 2/5 1-3 hours Newbie friendliness 25/100

esp8266/Arduino#5769 · 23 comments · Opened Feb 16, 2019
ESP8266 as a I2C slave Open

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

esp8266/Arduino#5762 · 34 comments · Opened Feb 15, 2019
unexpected dhcps lease set to default by wifi_softap_dhcps_start and by wifi_set_opmode Open

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

esp8266/Arduino#5746 · 2 comments · Opened Feb 8, 2019
Hadware SPI Slave Select (SS) setup and hold bit states in SPI1U not maintained Open

waiting for feedback

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

esp8266/Arduino#5712 · 6 comments · Opened Feb 3, 2019
mdns is not working STA and AP mode Open

component: network type: troubleshooting

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

esp8266/Arduino#5711 · 13 comments · Opened Feb 2, 2019
Wire do not work in a multimaster i2c bus Open

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

esp8266/Arduino#5645 · 19 comments · Opened Jan 20, 2019
Further work to support C++ Exceptions Open

esp8266/Arduino#5624 · 4 comments · 1 assignee · Opened Jan 16, 2019
tcp client(or https client) will stuck when freeheap is low Open

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

esp8266/Arduino#5621 · 4 comments · Opened Jan 16, 2019
Hardware Uart ISR not Shareable Open

type: enhancement

esp8266/Arduino#5555 · 1 comment · 1 assignee · Opened Dec 26, 2018
Calling round() inside print() result differs between v2.4.2 and v2.5.0-beta2 Open

component: core type: code cleanup

esp8266/Arduino#5530 · 8 comments · 1 assignee · Opened Dec 20, 2018
Finalize and add SD device test Open

type: enhancement

esp8266/Arduino#5403 · 2 comments · 1 assignee · Opened Nov 30, 2018
Wish list : Arduino ESP8266 support Espressif's ESP8266_NONOS_SDK release 3.0 Open

component: core component: SDK type: enhancement

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

esp8266/Arduino#5264 · 3 comments · 1 reaction · Opened Oct 19, 2018
Add hardware stack overflow checking to core and sys Open

type: enhancement

esp8266/Arduino#5158 · 1 assignee · Opened Sep 21, 2018
Implement Esp.getFreeSysStack Open

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

esp8266/Arduino#5148 · 8 comments · Opened Sep 18, 2018
setting SPI Slave mode Open

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

esp8266/Arduino#5104 · 5 comments · Opened Sep 3, 2018
CaptivePortalAdvanced - handleHttp.ino net::ERR_INCOMPLETE_CHUNKED_ENCODING error Open

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

esp8266/Arduino#5013 · 2 comments · 2 reactions · Opened Aug 6, 2018
ESP8266's WiFi.waitForConnectResult() doesn't have couter to try to connection ? Open

waiting for feedback

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

esp8266/Arduino#4983 · 1 comment · Opened Jul 30, 2018
ESP.deepSleepMax() - "deep sleep too long" Open

Difficulty 4/5 3-5 days Newbie friendliness 45/100

esp8266/Arduino#4969 · 24 comments · Opened Jul 27, 2018

esp8266/Arduino

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