update examples

examples/CapacitiveController/CapacitiveController.ino

@@ -0,0 +1,53 @@
+#include <ADCTouchSensor.h>
+
+// 
+// This requires an stm32f1 board compatible with the no-grounding-pin feature of ADCTouchSensor,
+// and this branch of the stm32f1 core: https://github.com/arpruss/Arduino_STM32/tree/addMidiHID
+//
+
+#define LED_BUILTIN PB12 // change to match your board
+
+#define NUM_PINS  10
+unsigned pins[NUM_PINS] = {PA0,PA1,PA2,PA3,PA4,PA5,PA6,PA7,PA8,PA9};
+unsigned keys[NUM_PINS] = {' ',KEY_UP_ARROW,KEY_LEFT_ARROW,KEY_DOWN_ARROW,KEY_RIGHT_ARROW,'w','a','s','d','f'}; // Makey-Makey also has 'g' and CLICK, but we don't have enough ADC channels
+unsigned prev[NUM_PINS];
+
+ADCTouchSensor* sensors[NUM_PINS];
+
+void setup() 
+{
+    pinMode(LED_BUILTIN, OUTPUT);
+    digitalWrite(LED_BUILTIN, 0);     
+
+    for (int i=0; i<NUM_PINS; i++) {
+        sensors[i] = new ADCTouchSensor(pins[i]);
+        sensors[i]->begin();
+        prev[i] = 0;
+    }
+
+    digitalWrite(LED_BUILTIN, 1);
+} 
+
+void loop() 
+{
+    uint8_t pressed = 0;
+
+    for (int i=0; i<NUM_PINS; i++) {
+      if (sensors[i]->read() > 25) {
+         pressed = 1;
+         if(!prev[i]) {
+           Keyboard.press(keys[i]);
+           prev[i] = 1;
+         }
+      }
+      else {
+         if(prev[i]) {
+           Keyboard.release(keys[i]);
+           prev[i] = 0;
+         }
+      }
+    }
+
+    digitalWrite(LED_BUILTIN, !pressed);
+}
+

examples/CapacitivePiano/CapacitivePiano.ino

@@ -1,5 +1,9 @@
 #include <ADCTouchSensor.h>
 
+// 
+// On the stm32f1, this requires this branch of the stm32f1 core: https://github.com/arpruss/Arduino_STM32/tree/addMidiHID
+//
+
 #ifdef ADCTOUCH_INTERNAL_GROUNDING
 # define GROUNDED_PIN -1
 #endif

library.properties

@@ -1,5 +1,5 @@
 name=ADCTouchSensor
-version=0.0.4
+version=0.0.5
 author=Alexander Pruss
 maintainer=arpruss <[email protected]>
 sentence=Create Touch Sensors with a single analog pin without external hardware