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users:dagnall53:oled [2019/05/20 19:00]
dagnall53
users:dagnall53:oled [2019/10/07 19:20] (current)
dagnall53
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 {{:​users:​dagnall53:​img_2635.jpg?​300 |Note: The picture shows the OLED connected to the Secondary bus, using D1 and D2}} {{:​users:​dagnall53:​img_2635.jpg?​300 |Note: The picture shows the OLED connected to the Secondary bus, using D1 and D2}}
-On the ESP8266 version, I prefer to use the board with the NodeMCU Motor Shield, as it provides easy pin locations for the servos. ​ The "​primary"​ I2C bus uses uses D3 and D4, which (when the board is on the Motor shield) are the 'Motor direction'​ pins. Pins D1 and D2 are used for the "​Secondary"​ I2C bus, and remain connected to the 'Motor PWM' pins. This means that if any the "​primary"​ I2C bus is used, the Motor Shield outputs can still be used as dimmable filament light drives (because the "​direction"​ (being changed all the time as these pins are the OLED data)  does not matter to a filament light!).  ​+On the ESP8266 version, I prefer to use the board with the NodeMCU Motor Shield, as it provides easy pin locations for the servos. ​ The "​primary"​ I2C bus uses uses D3 and D4, which (when the board is on the Motor shield) are the 'Motor direction'​ pins. Pins D1 and D2 are used for the "​Secondary"​ I2C bus, and remain connected to the 'Motor PWM' pins. This means that if only the "​primary"​ I2C bus is used, the Motor Shield ​(PWM) outputs can still be used as dimmable filament light drives (because the "​direction"​ (being changed all the time as these pins are the OLED data) does not matter to a filament light!).  ​
  
 The ESP32 version uses extra pins for the Main I2C bus so none are "​lost"​ if only one I2C bus is needed.\\ The ESP32 version uses extra pins for the Main I2C bus so none are "​lost"​ if only one I2C bus is needed.\\
users/dagnall53/oled.1558371605.txt.gz ยท Last modified: 2019/05/20 19:00 by dagnall53