SpacehuhnTech/esp8266_deauther

NodeMCU OLed display issue

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#1779 opened on Aug 6, 2025

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help wanted

Description

Have you searched for existing (open and closed) issues describing the same problem?

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

Contributor guide

Tech stack
c
Domain
security
Issue type
bug
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
half day
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
fresh
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
clear
Prerequisites
ESP8266 boardArduino IDEOLED display basics
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
50
Research direction
Examine the A config.h file in the repository to see how the SCL and SDA pins are defined for the OLED display. Compare the initialization code that uses these config pins with the direct Wire.begin call that works. Look through the issue comments for any additional troubleshooting steps or maintainer suggestions. The goal is to identify why the config based approach fails to produce display output.