Difference between revisions of "Ultrasonic Sensor Breakout SRF04"
Qian.zhang (talk | contribs) (Created page with "== Introduction == Ultrasonic sensor is non-contact distance measurement module, which is also compatible with electronic brick. It’s designed for easy modular project usag...") |
Qian.zhang (talk | contribs) (→Specification) |
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| 43x20x15 mm | | 43x20x15 mm | ||
|} | |} | ||
| + | |||
| + | == Usage == | ||
| + | |||
| + | ===Ultra Sonic Timing Diagram=== | ||
| + | |||
| + | [[File:Ultra_Timing.jpg]] | ||
| + | |||
| + | ===Programming=== | ||
| + | |||
| + | <syntaxhighlight lang="c"> | ||
| + | const int pingPin = 7; | ||
| + | const int start_signal = 8; | ||
| + | void setup() | ||
| + | { | ||
| + | Serial.begin(9600); | ||
| + | } | ||
| + | void loop() | ||
| + | { | ||
| + | long duration, inches, cm; | ||
| + | pinMode(pingPin, OUTPUT); | ||
| + | pinMode(start_signal, OUTPUT); | ||
| + | digitalWrite(start_signal, HIGH); | ||
| + | delayMicroseconds(20); | ||
| + | digitalWrite(start_signal, LOW); | ||
| + | digitalWrite(pingPin, LOW); | ||
| + | delayMicroseconds(2); | ||
| + | digitalWrite(pingPin, HIGH); | ||
| + | delayMicroseconds(5); | ||
| + | digitalWrite(pingPin, LOW); | ||
| + | pinMode(pingPin, INPUT); | ||
| + | duration = pulseIn(pingPin, HIGH); | ||
| + | inches = microsecondsToInches(duration); | ||
| + | cm = microsecondsToCentimeters(duration); | ||
| + | Serial.print(inches); | ||
| + | Serial.print("in, "); | ||
| + | Serial.print(cm); | ||
| + | Serial.print("cm"); | ||
| + | Serial.println(); | ||
| + | delay(80); | ||
| + | } | ||
| + | long microsecondsToInches(long microseconds) | ||
| + | { | ||
| + | return microseconds / 74 / 2; | ||
| + | } | ||
| + | long microsecondsToCentimeters(long microseconds) | ||
| + | { | ||
| + | return microseconds / 29 / 2; | ||
| + | } | ||
| + | </syntaxhighlight> | ||
| + | |||
| + | == How to buy == | ||
| + | |||
| + | Here to buy Ultrasonic Sensor Breakout SRF04 on [http://store.linksprite.com/ultrasonic-sensor-breakout-srf04/ store] | ||
Latest revision as of 01:45, 17 March 2015
Contents
Introduction
Ultrasonic sensor is non-contact distance measurement module, which is also compatible with electronic brick. It’s designed for easy modular project usage with industrial performance.
Features
- Detecting range: 3cm-4m
- Best in 30 degree angle
- Electronic brick compatible interface
- 5VDC power supply
- Breadboard friendly
- Dual transducer
- Arduino library ready
Specification
| Supply voltage | 5V |
| Global Current Consumption | 15 mA |
| Ultrasonic Frequency | 40k Hz |
| Maximal Range | 400 cm |
| Minimal Range | 3 cm |
| Resolution | 1 cm |
| Trigger Pulse Width | 10 μs |
| Outline Dimension | 43x20x15 mm |
Usage
Ultra Sonic Timing Diagram
Programming
<syntaxhighlight lang="c"> const int pingPin = 7; const int start_signal = 8; void setup() {
Serial.begin(9600);
} void loop() {
long duration, inches, cm;
pinMode(pingPin, OUTPUT);
pinMode(start_signal, OUTPUT);
digitalWrite(start_signal, HIGH);
delayMicroseconds(20);
digitalWrite(start_signal, LOW);
digitalWrite(pingPin, LOW);
delayMicroseconds(2);
digitalWrite(pingPin, HIGH);
delayMicroseconds(5);
digitalWrite(pingPin, LOW);
pinMode(pingPin, INPUT);
duration = pulseIn(pingPin, HIGH);
inches = microsecondsToInches(duration);
cm = microsecondsToCentimeters(duration);
Serial.print(inches);
Serial.print("in, ");
Serial.print(cm);
Serial.print("cm");
Serial.println();
delay(80);
} long microsecondsToInches(long microseconds) {
return microseconds / 74 / 2;
} long microsecondsToCentimeters(long microseconds) {
return microseconds / 29 / 2;
} </syntaxhighlight>
How to buy
Here to buy Ultrasonic Sensor Breakout SRF04 on store
