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SSD1306 based OLED connected to ESP8266
jandelgado edited this page Nov 7, 2016
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In another article, I described, how an SSD1306 (SPI 4-wire mode) based OLED-Display can be connected to the arduino and controlled with the u8g library.
This article describes how the display can be connected to an ESP8266 using the u8g2 lib (c++).
Connect the display as follows to the development board:
| SSD1306 | NodeMCU | Description |
|---|---|---|
| VCC | 3.3V | Power supply |
| GND | GND | Ground |
| D0 | D5 (=GPIO14=HSCLK) | Clock |
| D1 | D7 (=GPIO13=HMOSI) | Data (MOSI) |
| RES | D0 (=GPIO16) | Reset |
| DC | D4 (=GPIO2) | Data/Command |
| CS | D8 (=GPIO15) or GND | Chip Select |
D0, D1 must be connected as described, since the sketch uses hardware SPI of the NodeMCU board. RES, DC, CS connections can be choosen freely.