The request
“An ESP32 wired to an SSD1306 OLED display: connect 3.3 V and ground, SCL to GPIO22, and SDA to GPIO21.”
Then tryMove SDA to GPIO19Add a push button on GPIO18
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ESP32 DevKit driving a 128×64 OLED display over I²C — four wires (3V3 / GND / SDA / SCL). The standard "first display" project for ESP32 learners.
“An ESP32 wired to an SSD1306 OLED display: connect 3.3 V and ground, SCL to GPIO22, and SDA to GPIO21.”