Set bus clock for u8g2 to 100kHz for increased stability.

Changed SenseAir CO2 request code to 0X04 ...

examples/DIY_BASIC/DIY_BASIC.ino

@@ -78,7 +78,7 @@ long val;
 void setup()
 {
   Serial.begin(115200);
-
+  u8g2.setBusClock(100000);
   u8g2.begin();
   updateOLED();
 

examples/DIY_PRO/DIY_PRO.ino

@@ -78,7 +78,7 @@ int hum = 0;
 void setup()
 {
   Serial.begin(115200);
-
+  u8g2.setBusClock(100000);
   u8g2.begin();
   updateOLED();
 

examples/DIY_PRO_V3_7/DIY_PRO_V3_7.ino

@@ -117,6 +117,7 @@ unsigned long releasedTime = 0;
 void setup() {
   Serial.begin(115200);
   Serial.println("Hello");
+  u8g2.setBusClock(100000);
   u8g2.begin();
   //u8g2.setDisplayRotation(U8G2_R0);
 

examples/DIY_PRO_WITH_SENSIRION_NOX/DIY_PRO_WITH_SENSIRION_NOX.ino

@@ -97,7 +97,7 @@ int hum = 0;
 void setup()
 {
   Serial.begin(115200);
-
+  u8g2.setBusClock(100000);
   u8g2.begin();
   updateOLED();
 

examples/DIY_PRO_WITH_SGP30/DIY_PRO_WITH_SGP30.ino

@@ -91,7 +91,7 @@ int hum = 0;
 void setup()
 {
   Serial.begin(115200);
-
+  u8g2.setBusClock(100000);
   u8g2.begin();
   updateOLED();
 

examples/DIY_PRO_WITH_SGP40/DIY_PRO_WITH_SGP40.ino

@@ -87,7 +87,7 @@ int hum = 0;
 void setup()
 {
   Serial.begin(115200);
-
+  u8g2.setBusClock(100000);
   u8g2.begin();
   updateOLED();