Update readme.md

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@ -40,8 +40,13 @@ while booting (wait for wifi, 1st data, ...)
![img](5_runTime.jpg)
this is the normal screen with time in bottom line (refresh all 5 seconds)
## next step(s)
# SSD1306
* modbus communication interface
* 3D printed case ... but this is a task for dark days in december.
Some changes made possible to use SSD1306 (instead of NOKIA5110 display).
![img](SSD1306.png)
You can use same PCB. You only have to connect GND (SSD:GND), VCC (SSD:VCC), D/C (SSD:SDA) and SCE (SSD:SCL)
![img](6_Wiring_SSD1306.png)
On other PCB-layouts, PIN wemos:D1 need connected to SSD:SCL and wemos:D2 has to be connected to SSD:SDA.
much fun.