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Range Finders | |
Maxbotix MaxSonar-LV-EZ0 Ultrasonic Range Finder This
MaxSonar-LV-EZ0 is a sonar range finder that offers very short- to
long-range detection and ranging in an incredibly small package with
ultra-low power consumption. The MaxSonar-EZ0 detects objects from 0
inches to 254 inches (6.45 meters) and provides sonar range information
from 6 inches out to 254 inches with 1-inch resolution. Objects between
0 inches and 6 inches range as 6 inches
(15cms). The interface output formats included are pulse
width output, analog voltage output, and asynchronous serial digital
output. The only way in which the
LV-MaxSonar-EZ0 differs from the LV-MaxSonar-EZ1 is in
beam shape and sensitivity; the EZ0 has the most sensitivity of the
MaxSonar product line, yielding a controlled wide beam with high
sensitivity. Please see the pictures tab for a comparison chart of EZ
beam characteristics. |
  MaxSonar Frequently Asked Questions! |
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Maxbotix MaxSonar-LV-EZ1 Ultrasonic Range Finder
This
MaxSonar-LV-EZ1 is a sonar range finder that offers very short- to
long-range detection and ranging in an incredibly small package with
ultra-low power consumption. The MaxSonar-EZ1 detects objects from 0
inches to 254 inches (6.45 meters) and provides sonar range information
from 6 inches out to 254 inches with 1-inch resolution. Objects between
0 inches and 6 inches range as 6 inches
(15cms). The interface output formats included are pulse
width output, analog voltage output, and asynchronous serial digital
output. Specifications and Features include - Small and light: 0.870" x 0.785" x 0.645", 4.3 grams - Long range detection: 0 - 254 inches (6.45 meters) - No deadband (detections from 0 to 6 inches are output as 6 inches) - 25mm resolution - Low typical current consumption: 2 mA - Runs on 2.5V - 5.5V - 42 kHz ultrasonic sensor - 20 Hz reading rate - Free-run or triggered operation - Three interfaces (active simultaneously): Serial output: asynchronous, logic-level, inverted, 9600 bps Analog output: 10 mV/25.4mm Pulse width output: 147 us/25.4mm Purchase! Download Data Sheet! |
MaxSonar Frequently Asked Questions! |
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| POL-136 Sharp
GP2Y0A21YK0F Analog Distance Sensor 10-80cm The GP2Y0A21 Sharp distance sensor is a great way to add obstacle avoidance or motion sensing to your robot or any other project. With a detection range of 4" to 32" and an analog voltage indicating the distance, this sensor is very easy to use. Overview 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 detection range of this version is approximately 10 cm to 80 cm (4" to 32"); a plot of distance versus output voltage is shown below. The GP2Y0A21 uses a 3-pin JST connector that connects to our 3-pin JST cable for Sharp distance sensors as shown in the upper picture on the right. It is also simple to solder three wires to the sensor where the connector pins are mounted (see the lower picture to the right). When looking at the back, the three connections from left to right are power, ground, and the output signal. Feature summary * operating voltage: 4.5 V to 5.5 V * average current consumption: 30 mA (typical) * distance measuring range: 10 cm to 80 cm (4" to 32") * output type: analog voltage * output voltage differential over distance range: 1.9 V (typical) * response time: 38 ± 10 ms * package size: 29.5×13.0×13.5 mm (1.16×0.5×0.53") * weight: 3.5 g (0.12 oz) Linearizing the output The relationship between the sensor’s output voltage and the inverse of the measured distance is approximately linear over the sensor’s usable range. The GP2Y0A21YK data sheet (374k pdf) contains a plot of analog output voltage as a function of the inverse of distance to a reflective object. You can use this plot to convert the sensor output voltage to an approximate distance by constructing a best-fit line that relates the inverse of the output voltage (V) to distance (cm). In its simplest form, the linearizing equation can be that the distance to the reflective object is approximately equal to a constant scale factor (~27 V*cm) divided by the sensor’s output voltage. Adding a constant distance offset and modifying the scale factor can improve the fit of this line. Alternative Sharp Distance Sensors We carry two other versions of this sensor as well: the longer-range Sharp GP2Y0A02YK0F analog distance sensor (20 – 150 cm) and the shorter-range Sharp GP2D120XJ00F analog distance sensor (4 – 30 cm). These analog distance sensors all have identical pin-outs and very similar packages, making it easy to swap one version for another should your application requirements change. We also sell a digital Sharp distance sensor, which has a very low minimum detection distance, quicker response time, lower current draw, and a much smaller package. Download Data Sheet! Purchase! |
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| POL-1136
Sharp
GP2D120XJ00F Analog Distance Sensor 4-30cm The GP2D120 is the shortest-range Sharp analog distance sensor we carry, featuring a detection range of 1.5" to 12". The shorter range gives you higher resolution measurements, and the lower minimum detection distance makes this sensor great for detecting very close objects. The distance is indicated by an analog voltage, making this sensor very easy to use. Overview 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 detection range of this version is approximately 4 cm to 30 cm (1.5" to 12"); a plot of distance versus output voltage is shown below. The GP2D120 uses a 3-pin JST connector that connects to our 3-pin JST cable for Sharp distance sensors as shown in the top picture on the right. It is also simple to solder three wires to the sensor where the connector pins are mounted (see the lower picture to the right). When looking at the back, the three connections from left to right are power, ground, and the output signal. Feature summary * operating voltage: 4.5 V to 5.5 V * average current consumption: 33 mA (typical) * distance measuring range: 4 cm to 30 cm (1.5" to 12") * output type: analog voltage * output voltage differential over distance range: 2.3 V (typical) * response time: 38 ± 10 ms * package size: 29.5×13.0×13.5 mm (1.16×0.5×0.53") * weight: 3.5 g (0.12 oz) Linearizing the output The relationship between the sensor’s output voltage and the inverse of the measured distance is approximately linear over the sensor’s usable range. The GP2D120 data sheet (293k pdf) contains a plot of analog output voltage as a function of the inverse of distance to a reflective object. You can use this plot to convert the sensor output voltage to an approximate distance by constructing a best-fit line that relates the inverse of the output voltage (V) to distance (cm). Alternative Sharp Distance Sensors We carry two longer-range versions of this sensor as well: the Sharp GP2Y0A02YK0F analog distance sensor (20 – 150 cm) and the Sharp GP2Y0A21YK0F analog distance sensor (10 – 80 cm). These analog distance sensors all have identical packages and pin-outs, making it easy to swap one version for another should your application requirements change. We also sell a digital Sharp distance sensor, which has a lower minimum detection distance, quicker response time, lower current draw, and a much smaller package. Download Data Sheet! Purchase! |
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| IRP-001
Infrared Proximity Sensor Long Range - Sharp GP2Y0A02YK0F Infrared proximity sensor made by Sharp. Part # GP2Y0A02YK0F has an analog output that varies from 2.8V at 15cm to 0.4V at 150cm with a supply voltage between 4.5 and 5.5VDC. The sensor has a Japanese Solderless Terminal (JST) Connector. We recommend using a JST pigtail or soldering wires directly to the back of the module. This sensor is great for sensing objects up to 5 feet away! Purchase! Download Data Sheet! |
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| SFG-002
Ultrasonic
Range Finder - Maxbotix LV-WR1 SFG-003 Ultrasonic Range Finder - Maxbotix XL-WRA1 This is the new, weather resistant, field-hardened WR1 from Maxbotix. The WR1 uses a robust PVC housing, rated IP67, and matches standard electrical 3/4" PVC pipe fittings. We are extremely pleased with the size, quality, and ease of use of this low voltage weather-resistant range finder. The serial interface is a bit odd (it's RS232 instead of standard TTL), but the PWM and Analog interfaces will allow any micro to listen easily enough. The sensor provides very accurate readings of 0 to 254 inches (0 to 6.45m) in 1 inch increments with little or no dead zone! Detailed dimensional is found in the datasheet below. Mounting hardware is found below. Features: * 42kHz Ultrasonic sensor * Operates from 3-5.5V * Low 2.1mA supply current * 20Hz reading rate * RS232 Serial Output - 9600bps * Analog Output - (Vcc/512)/inch * PWM Output - 147uS/inch * Designed for outdoor applications Purchase! Download LV-WR1 Data Sheet! Download XL-WR1 Data Sheet! |
 MaxSonar Frequently Asked Questions! |
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