1.3" SH1106 uOLED Display Module (HCMODU0058 & HCMODU0059)

[andrew]

You'll need to connect it to your ESP modules SPI interface. The actual pin connections to your ESP module will depend on the version of module you have and also some of the connections will depend on the actual pin configurations within the sketch/library you are using. But here is a guide to how you would connect it:

OLED.............ESP8266
GND..............GND
VCC..............3.3V
D0/SCK.......Normally GPIO14 (SPI CLK)
D1/SDA.........Normally GPIO13 (SPI MOSI)
RST.................RST or GPIO pin if controlled by sketch (Reset)
DC..................GPIO pin depends of software (Data / command)
CS...................GPIO pin depends on software (SPI chip select)

[philcoll99]

Thanks for the help Andrew - I think I’m getting closer! I have nothing displaying on the screen though.

I have the controller marked ‘D1 WiFi’, purchased a month or two back from HC. In the below the GPIO numbers in brackets are those marked on the back of the board.

The connections I have are:
OLED. D1 Wifi
GND GND
VCC 3.3V
CLK D13/SCK (GPIO14)
MOSI D11/MOSI/D7 (GPIO13)
RES D2 (GPIO16) in my sketch RST_DI set to 16)
DC D15/SCL/D3 (GPIO5) in my sketch DC_DI set to 5)
CS D14/SDA/D4 (GPIO4) in my sketch CS_DI set to 4)

Do the above connections seem ok? So which of the markings on the board refer to the SPI interface?

I know the display does work as I connected it up to an Arduino Uno and it worked fine, and this D1 board works as I’ve connected it fine to the internet and interrogated an API. it’s just connecting the two together I’m having a problem with!

Thanks for your help.

[andrew]

I'm guessing from your comments that you're using our HCuOLED library. If so you would connect it like this:


OLED.............WEMOS D1
GND..............GND
VCC..............3.3V
D0/SCK.......D5 (GPIO14)
D1/SDA.........D7 (GPIO13)
RST.................D1 (GPIO5)
DC..................D2 (GPIO4)
CS...................D8 (GPIO15)

In your sketch set the following definitions:

Code: [Select all] [Expand/Collapse]

1. #define CS_DI 15
2. #define DC_DI 4
3. #define RST_DI 5

GeSHi © Codebox Plus Extension

Note that the HCuOLED library wasn't written to support this configuration but it should work.