Build Instructions

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• 1

  Step 1

  Get nodemcu running on your ESP8266, and confirm access via ESPlorer. There's a nice how-to at http://www.esp8266.com/wiki/doku.php?id=loading_firmware

• 2

  Step 2

  Wire up the display to the ESP-12e:

  Connect the following ESP pins to the OLED pins.

  ESP	OLED
  GND	GND
  3V3	VCC
  D1	SDA
  D2	SCL

• 3

  Step 3

  Load the following code to the ESP and run:

  -- OLED Display demo
  -- March, 2016 
  -- @kayakpete | pete@hoffswell.com
  -- Hardware: 
  --   ESP-12E Devkit
  --   4 pin I2C OLED 128x64 Display Module
  -- Connections:
  --   ESP  --  OLED
  --   3v3  --  VCC
  --   GND  --  GND
  --   D1   --  SDA
  --   D2   --  SCL
  
  -- Variables 
  sda = 1 -- SDA Pin
  scl = 2 -- SCL Pin
  
  function init_OLED(sda,scl) --Set up the u8glib lib
       sla = 0x3C
       i2c.setup(0, sda, scl, i2c.SLOW)
       disp = u8g.ssd1306_128x64_i2c(sla)
       disp:setFont(u8g.font_6x10)
       disp:setFontRefHeightExtendedText()
       disp:setDefaultForegroundColor()
       disp:setFontPosTop()
       --disp:setRot180()           -- Rotate Display if needed
  end
  
  function print_OLED()
     disp:firstPage()
     repeat
       disp:drawFrame(2,2,126,62)
       disp:drawStr(5, 10, str1)
       disp:drawStr(5, 20, str2)
       disp:drawCircle(18, 47, 14)
     until disp:nextPage() == false
     
  end
  
  -- Main Program 
  str1="    Hello World!!"
  str2="     @kayakpete"
  init_OLED(sda,scl)
  print_OLED() 
  

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