sharp GP2Y0D805Z0F arduino code

Other Hardware Sensors
1

Hello guys,

I am new in this Arduino world. I have a sharp GP2Y0D805Z0F sensor, however, I cannot find any code that works. The sensor has a specification distance that goes from 0.5 to 5 cm.
I have tried the following code, but I don't understand why the output is in volts and not in cm. Is there a way to convert the volts into cm. Sorry if I lack technical knowledge, I am just starting at this.

int IRpin = 0; // Analogeingang
double value, volts;
void setup()
{
Serial.begin(9600);
}
void loop()
{
value = analogRead(IRpin);
volts = value*5.0/1024.0;
Serial.println(volts);
delay(50);
}
2

Hello guys,

I am new in this Arduino world. I have a sharp GP2Y0D805Z0F sensor, however, I cannot find any code that works. The sensor has a specification distance that goes from 0.5 to 5 cm.
I have tried the following code, but I don't understand why the output is in volts and not in cm. Is there a way to convert the volts into cm? Sorry if I lack technical knowledge, I am just starting at this.
Code: [Select]

int IRpin = 0; // Analogeingang
double value, volts;
void setup()
{
Serial.begin(9600);
}
void loop()
{
value = analogRead(IRpin);
volts = value*5.0/1024.0;
Serial.println(volts);
delay(50);
}
3

Hello
take a look here.

4

The output is in volts because of the code that you wrote. An analogue input measures a voltage in 1024 steps. You convert the measurement to volts.

Looking at the datasheet of the sensor, the sensor provides either high or low, not a linear voltage indicating distance. So its output indicates presence or no presence of an object inside its range.

5

The datasheet is available here: https://www.pololu.com/file/0J284/GP2Y0D805Z0F.pdf

It is not very clear but it seems to produce negative-going pulses, the width of which indicates the distance. I think you would read the pulse with "unsigned long pulseWidth = pulseIn(DataPin, LOW, timeout);". The default timeout is 1,000,000 microseconds (1 second) so you should probably pick something shorter. Some experimenting should allow you to determine the distances associated with various pulse lengths.

6

Hello Arduino Forum. I hope you can help me with a question. I have a project where I need to measure the distance from an RGB colour sensor to a reflective surface. I want to vary the distance of the surface to see how it affects the reading of the colour sensor. I am using this one TCS34725 RGB Color Sensor For Arduino - DFRobot.

I have looked for all type of sensors including the sharp GP2Y0A21YK0F which has a 10 to 80cm distance measuring range. I need a sensor that has a range from 0.5 cm to a maximum of 5 cm, adafruit used to have one but it has been discontinued.
Polulu has a sharp GP2Y0D805Z0F Digital distance sensor, that from what I gather this is only to detect the presence of objects within that range, not to measure the distances. Is there a sensor that I can use for this type of measurement? Or is there a code that I can use to adapt the Polulu sensor to measure the distances?
https://shop.pimoroni.com/products/pololu-carrier-with-sharp-gp2y0d805z0f-digital-distance-sensor-5cm?variant=31546927841363&currency=GBP&utm_source=google&utm_medium=cpc&utm_campaign=google+shopping?utm_source=google&utm_medium=surfaces&utm_campaign=shopping&gclid=CjwKCAjwgOGCBhAlEiwA7FUXkkvZCf-_Tn7m0Mnq13JSL7Z9mnP3qZt_8oHSoScjyNINkgv6vQ6EFhoCm_oQAvD_BwE

Thank you all for your time! Sorry If any of my questions are silly, but I am new in this arduino world

7

Don't cross post; reported.

8

@asds98

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9

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