Difference between revisions of "Crowbits-80cm Infrared Proximity Sensor"
(→Usage) |
|||
Line 2: | Line 2: | ||
The Sharp distance sensors are a popular choice for many projects that require accurate distance measurements. This IR sensor is more economical than sonar rangefinders, yet it provides much better performance than other IR alternatives. Interfacing to most microcontrollers is straightforward: the single analog output can be connected to an analog-to-digital converter for taking distance measurements, or the output can be connected to a comparator for threshold detection | The Sharp distance sensors are a popular choice for many projects that require accurate distance measurements. This IR sensor is more economical than sonar rangefinders, yet it provides much better performance than other IR alternatives. Interfacing to most microcontrollers is straightforward: the single analog output can be connected to an analog-to-digital converter for taking distance measurements, or the output can be connected to a comparator for threshold detection | ||
− | [[File: Crowbits- | + | [[File: Crowbits-80cm Infrared Proximity Sensor 1.jpg |600px]] |
== Features == | == Features == |
Latest revision as of 10:28, 31 July 2020
Contents
Description
The Sharp distance sensors are a popular choice for many projects that require accurate distance measurements. This IR sensor is more economical than sonar rangefinders, yet it provides much better performance than other IR alternatives. Interfacing to most microcontrollers is straightforward: the single analog output can be connected to an analog-to-digital converter for taking distance measurements, or the output can be connected to a comparator for threshold detection
Features
- High precision
- Easy to use
Specification
- Distance measuring range: 10 cm to 80 cm (4" to 32")
- Operating voltage: 3.3V
- Response time: 38 ± 10ms
Usage
The following sketch demonstrates a simple application of the module.
1.You need to prepare a Crowbits motherboard, such as Crowbits-UNO board.
2.Connect the module to the A0 interface of the Crowbits-UNO board, as shown in the figure:
3.Upload the following code to the Crowbits-UNO board.
/* * * VCC -- VCC * GND -- GND * Signal -- Analog 0 */ #define pin A0 void setup () { Serial.begin (9600); pinMode (pin, INPUT); } void loop () { uint16_t value = analogRead (pin); uint16_t range = get_gp2d12 (value); Serial.print("Analog value:"); Serial.println (value); Serial.print ("Distance:"); Serial.print (range); Serial.println (" mm"); Serial.println (); delay (500); } uint16_t get_gp2d12 (uint16_t value) { if (value < 10) value = 10; return ((67870.0 / (value - 3.0)) - 40.0); }
4.After the upload is successful, open the serial port monitor, the baud rate is set to 9600. Place an object in front of the sensor and the serial port will print its distance.