Description
The Optical Distance Sensor uses a pulsed light signal to return a value representing the distance from a target surface. As the distance from the target changes the returned value changes indicating whether the movement is towards the target or away from the target.
The ODS operates by pulsing an LED to illuminate the target surface and measuring the strength of the reflected signal. The returned value will vary for the same distance as the reflectivity of the target surface varies.
Specifications
Power | 5 volts DC. 20 mA max. |
Standard 3 pin connector | For connection to 3 pin analog port |
Signaling voltage levels | Analog 0 – 5 volts |
Wiring standard | Pin 1 – black – Gnd Pin 2 – red – +5v Pin 3 – yellow – Analog output |
Illumination LED color | Red |
Typical maximum range | 8 centimeters |
Typical minimum range | 0.5 centimeters |
Internal sampling rate | 1,000 samples per second |
Unit dimensions – LxWxH | 32 x 32 x 12 millimeters |
Mounting holes | 24 x 24 millimeters square pattern |
Unit weight | 10 grams |
Wire length | 25 centimeters |
Additional information
| Weight | .0290 lbs |
|---|---|
| Dimensions | 4 × 3.75 × .75 in |
FTC SDK
Android Studio Example Program
Download the below program for an example of how to read this Analog sensor. The FTC SDK will supply a value from 0-5 representing a voltage.
In your configuration file, name an Analog Input “light” and name a Core Device Interface Module “Device Interface Module 1”
/*
Modern Robotics Analog Example
Created 7/25/2017 by Colton Mehlhoff of Modern Robotics using FTC SDK 3.10
Reuse permitted with credit where credit is due
The Modern Robotics Core Device Interface reads analog input
using a 10 bit value meaning the Android Phone reads a value from 0 to 1023.
The FTC SDK supplies a "voltage". The SDK is scaling this value of 0-1023 to 1-5 with decimal places.
Configuration:
Analog Input on Core Device Interface "light"
Core Device Interface named "Device Interface Module 1"
Support is available by emailing support@modernroboticsinc.com
*/
package org.firstinspires.ftc.teamcode;
import com.qualcomm.robotcore.eventloop.opmode.LinearOpMode;
import com.qualcomm.robotcore.eventloop.opmode.TeleOp;
import com.qualcomm.robotcore.hardware.AnalogInput;
import com.qualcomm.robotcore.hardware.DeviceInterfaceModule;
@TeleOp(name = "Analog Example", group = "MRI")
//@Disabled
public class MRI_Analog_Example extends LinearOpMode {
//An Analog Input. In this example, we used a Light Sensor although it could be any analog sensor.
AnalogInput MRLightSensor;
//CDI. Using this, we can read any analog sensor on this CDI without creating an instance for each sensor.
DeviceInterfaceModule cdi;
@Override
public void runOpMode() {
telemetry.addData("Status", "Initialized");
telemetry.update();
//Link objects to configuration file
MRLightSensor = hardwareMap.analogInput.get("light");
cdi = hardwareMap.deviceInterfaceModule.get("Device Interface Module 1");
waitForStart();
while (opModeIsActive()) {
//Read the light sensor using the Analog Input object
telemetry.addData("light", MRLightSensor.getVoltage());
//Read each Analog Port of the CDI. 0-7
for (int i = 0; i < 8; i++) {
telemetry.addData("Analog " + i, cdi.getAnalogInputVoltage(i));
}
telemetry.update();
}
}
}
