New combined demo showing most non I2C input sensors.

It'd be great to query I2C too, but those sensors unfortunately
are not setup to use a different I2C address and conflict with
one another unless you put some solder bridges to change the address

Author: marcmerlin

examples/Combined_Demo/Combined_Demo.ino

@@ -0,0 +1,96 @@
+// Combined Demo by Marc MERLIN <marc_soft@merlins.org>
+
+#include "Arduino_SensorKit.h"
+
+uint8_t button = 4;
+uint8_t led = 6;
+uint8_t pot = A0;
+uint8_t mic = A2;
+uint8_t light = A3;
+
+void setup() {
+  #if 0
+  // Accelerometer and Oled both share the same I2C address
+  // both cannot be used at the same time, unless you solder
+  // across the I2C address solder pads on the Oled module
+  Accelerometer.begin();
+  // Same problem with pressure sensor
+  Pressure.begin();
+  #endif
+
+  pinMode(mic , INPUT);
+  pinMode(light , INPUT);
+
+  pinMode(button , INPUT);
+  pinMode(led, OUTPUT);
+  digitalWrite(led, LOW);
+
+  Environment.begin();
+
+  Oled.begin();
+  Oled.setFlipMode(true);
+}
+
+void loop() {
+
+  Oled.setFont(u8x8_font_amstrad_cpc_extended_r); 
+
+  #if 0
+  Oled.setCursor(0, 0);
+  Oled.print("x:"); 
+  Oled.print(Accelerometer.readX()); 
+  Oled.print("  ");
+  Oled.print("y:"); 
+  Oled.print(Accelerometer.readY());        
+  Oled.print("  ");
+  Oled.print("z:"); 
+  Oled.print(Accelerometer.readZ());
+  // Similar problem with pressure sensor
+  Oled.print(Pressure.readAltitude());
+  #endif
+
+  Oled.setCursor(0, 0);
+  Oled.print("But:"); 
+  if (digitalRead(button)) {
+    digitalWrite(led, HIGH);
+    Oled.print("1"); 
+  } else {
+    digitalWrite(led, LOW);
+    Oled.print("0"); 
+  }
+
+  // https://github.com/olikraus/u8g2/wiki/u8x8reference#print
+  // looks like we need an offset of 9 for a font of 8
+  // if the offset is wrong, the text gets displayed on
+  // the wrong line
+  uint16_t pot_value = analogRead(pot);
+  Oled.setCursor(0, 9);
+  Oled.print("Pot: ");
+  Oled.print(pot_value);
+  Oled.print("   ");
+
+  uint16_t mic_value = analogRead(mic);
+  Oled.setCursor(0, 18);
+  Oled.print("Mic: ");
+  Oled.print(mic_value);
+  Oled.print("   ");
+
+  uint16_t light_value = analogRead(light);
+  Oled.setCursor(0, 27);
+  Oled.print("Light: ");
+  Oled.print(light_value);
+  Oled.print("   ");
+
+  Oled.setCursor(0, 45);
+  Oled.print("Temp:");
+  Oled.print(Environment.readTemperature());
+  Oled.print("C");
+
+  Oled.setCursor(0, 54);
+  Oled.print("Hum: ");
+  Oled.print(Environment.readHumidity());
+  Oled.print("%");
+
+  Oled.refreshDisplay();
+  delay(100);
+}