-/*
- This program is free software: you can redistribute it and/or modify
- it under the terms of the GNU Affero General Public License as
- published by the Free Software Foundation, either version 3 of the
- License, or (at your option) any later version.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU Affero General Public License for more details.
-
- You should have received a copy of the GNU Affero General Public License
- along with this program. If not, see <http://www.gnu.org/licenses/>.
- */
-int right_echo_pin = 6;
-int right_trigger_pin = 7;
-
-int ping_microseconds = 0;
-double sound_cm_per_microsecond_at_sea_level = 0.034029;
-int count = 0;
-
-void setup(){
- Serial.begin(9600);
- pinMode(right_echo_pin, INPUT);
- pinMode(right_trigger_pin, OUTPUT);}
-
-void loop(){
- // make sure trigger pin is off, a.k.a. LOW
- digitalWrite(right_trigger_pin, LOW);
- delayMicroseconds(2);
-
- // send a 10 microsecond HIGH pulse to the trigger pin
- digitalWrite(right_trigger_pin, HIGH);
- delayMicroseconds(10); // leave the pin on for 10 microseconds
- digitalWrite(right_trigger_pin, LOW);
-
- ping_microseconds = pulseIn(right_echo_pin, HIGH);
-
- // wait for the sonar sensor hardware to recover from pinging
- delayMicroseconds(50);
-
- // print out the pulse time
- Serial.print(ping_microseconds);
- Serial.print(" = ping time (microseconds), ");
- Serial.print(ping_microseconds * sound_cm_per_microsecond_at_sea_level / 2);
- Serial.print(" = distance (cm). #");
- Serial.println(count++);
-
- // wait so it's easier to read the serial monitor.
- // change delay to 0 for fullspeed.
- // default is 333, which is about 1/3 of a second
- delay(333);}