IDD Summer 2017
We made an instrument using buttons and a temperature/humidity sensor. Currently the sounds are mapped to the harmonic series with sine / saw / square waves mix. The humidity sensor triggers the timbral change.
Dependencies: DHT11 HC_SR04_Ultrasonic_Library mbed
Revision 0:257c833fe9de, committed 2017-06-28
- Comitter:
- nonchalamment
- Date:
- Wed Jun 28 22:26:55 2017 +0000
- Commit message:
- We made an instrument activated by buttons and a humidity sensor.
Changed in this revision
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/DHT11.lib Wed Jun 28 22:26:55 2017 +0000 @@ -0,0 +1,1 @@ +http://developer.mbed.org/users/fossum_13/code/DHT11/#5da6f6de3e42
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/HC_SR04_Ultrasonic_Library.lib Wed Jun 28 22:26:55 2017 +0000 @@ -0,0 +1,1 @@ +https://mbed.org/users/ejteb/code/HC_SR04_Ultrasonic_Library/#e0f9c9fb4cf3
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp Wed Jun 28 22:26:55 2017 +0000
@@ -0,0 +1,99 @@
+#include "mbed.h"
+#include "ultrasonic.h"
+#include "Dht11.h"
+#include <stdio.h>
+Serial pc(USBTX, USBRX); // tx, rx
+
+// pull down
+DigitalIn b1(D9);
+DigitalIn b2(D8);
+DigitalIn b3(D7);
+DigitalIn b4(D6);
+DigitalIn b5(D5);
+DigitalIn b6(D4);
+DigitalIn b7(D3);
+DigitalIn b8(D2);
+
+Dht11 tmpSensor(D0);
+
+DigitalIn buttons[8]={b1,b2,b3,b4,b5,b6,b7,b8};
+int buttonNames[] = {1,2,3,4,5,6,7,8};
+
+
+// values for temp/humidity sensor;
+int tempSamples[5];
+int humiSamples[5];
+int counter = 0;
+
+int tempValue = 0;
+int minTemp = 0;
+
+int humiValue = 0;
+int minHumi = 0;
+
+float findMedian(int x[]) {
+ float temp;
+ int i, j;
+ // the following two loops sort the array x in ascending order
+ for(i=0; i < 4; i++) {
+ for(j=i+1; j<5; j++) {
+ if(x[j] < x[i]) {
+ // swap elements
+ temp = x[i];
+ x[i] = x[j];
+ x[j] = temp;
+ }
+ }
+ }
+ return x[2];
+}
+
+
+
+void averageTH(int temperature, int humidity) {
+ if (counter==5){
+ counter=0;
+ int medTemp = findMedian(tempSamples);
+ int medHumi = findMedian(humiSamples);
+ if (medTemp >= minTemp && medHumi >= minHumi) {
+ tempValue = medTemp;
+ humiValue = medHumi;
+ printf("tmp %d\r\n", tempValue);
+ printf("hum %d\r\n", humiValue);
+ }
+
+ } else {
+ tempSamples[counter] = temperature;
+ humiSamples[counter] = humidity;
+ counter += 1;
+ //printf("Temperature changed to %dmm\r\n", temperature);
+ }
+
+
+
+}
+
+void waitforbuttons() {
+ for (int i = 0; i < 8; i++) {
+ DigitalIn button = buttons[i];
+ int name = buttonNames[i];
+ if (button.read() == 0) {
+ pc.printf("button %d\r\n", name);
+ }
+ }
+ wait(0.1);
+}
+
+
+
+int main(){
+
+
+
+ while(1)
+ {
+ tmpSensor.read();
+ averageTH(tmpSensor.getFahrenheit(), tmpSensor.getHumidity());
+ waitforbuttons();
+ }
+ }
\ No newline at end of file
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed.bld Wed Jun 28 22:26:55 2017 +0000 @@ -0,0 +1,1 @@ +https://mbed.org/users/mbed_official/code/mbed/builds/64910690c574 \ No newline at end of file