SpacehuhnTech/esp8266_deauther

NodeMCU OLed display issue

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#1,779 opened on Aug 6, 2025

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Description

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Yes

I am using ESP8266 nodemcu V3 with built-in oled display. when i try to use the oled with Wire.begin(4, 5); it works great. but when i try to use these scl and sda pins in A_config.h, it doesnt show anything in the display. i tried some other default scl, sda pins too. nothing worked

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Research direction
Check the pin definitions in A config.h and verify the pin mappings for SCL and SDA on the NodeMCU ESP8266. Ensure that the OLED display is powered correctly and that the Wire.begin call matches the expected pins.
Tech stack
c
Domain
embedded iot
Issue type
Bug
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
2
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-3 hours
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Active
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Clear
Prerequisites
CArduinoESP8266
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
60