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LilyGO TTGO ESP8266 0.91 inch OLED SSD1306 Display
Model reference: TTGO-ESP8266-0.91-SSD1306
LilyGO TTGO ESP8266 0.91 inch OLED SSD1306

Available from:
Aliexpress.com
Banggood.com
Amazon.com


Manufacturer:
Lilygo.cn

Install method:
USB to Serial

GPIO #Component
GPIO00 User
GPIO01 User
GPIO02 I2C SDA
GPIO03 User
GPIO04 OLED Reset
GPIO05 None
GPIO09 None
GPIO10 None
GPIO12 User
GPIO13 User
GPIO14 I2C SCL
GPIO15 User
GPIO16 None
GPIO17 User
Template
{"NAME":"TTGO-0.91","GPIO":[1,1,640,1,1024,0,0,0,1,1,608,1,0,1],"FLAG":0,"BASE":18}

Careful not to confuse this device with the Heltec WiFi Kit 8. The markings are identical but the GPIO assignments are different for the OLED. Heltec is a white circuit board with rounded edges. This one is black, has sharp edges and a prominent TTGO label at the top.