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Description: This is the fantastically easy to use sensor from Maxbotix. We are extremely pleased with the size, quality, and ease of use of this little range finder. The serial interface is a bit odd (it's RS232 instead of TTL), but the PWM and Analog interfaces will allow any micro to listen easily enough. The sensor provides very accurate readings of 0 to 255 inches (0 to 6.45m) in 1 inch increments with little or no dead zone!

Maxbotix is offering the EZ0, EZ1, EZ2, EZ3, and EZ4 with progressively narrower beam angles allowing the sensor to match the application. Please see beam width explanation below.

Control up to 10 sensors with only two pins! Checkout the Maxbotix FAQ listed below.

Features:

  • 42kHz Ultrasonic sensor
  • Operates from 2.5-5.5V
  • Low 2mA supply current
  • 20Hz reading rate
  • RS232 Serial Output - 9600bps
  • Analog Output - 10mV/inch
  • PWM Output - 147uS/inch
  • Small, light weight module

Documents:

Checkout Mikey Sklar's flame-based trampoline, the high-lighter, using the EZ1!

Comments 21 comments

  • looks like a very interesting product range…but they’ve got to get rid of the christian cross and jesus fish traces on the bottom side of the board. this is gratuitous and doesn’t belong on a product such as this.
    i’ll take my electronics secular, thank you very much.

    • I think that the manufacturer of this product should have the freedom to put whatever they want on the product they make, it’s totally the consumer’s choice to purchase the item.

      • The “1st” mention is an insult to anyone believing Mohammed is 1st. You can print “I love Jesus” cause yuo can love whoever you want and share it. You cannot tell people that their prophet is not as good as yours. It really is disrespectful.

    • The EZ4 has a range of only about 14"max, 6"min.
      btw, They have the right to put the cross and fish on the board just as much as you have to complain about it, and just as much right as I have to agree with or without it.
      No one is forcing you to buy it. Move to China or NK if you don’t like our freedoms.

      • I too was annoyed that the manufacturer sees my buying of a proximeter as a moment to secretly (there is no way to notice before purchase that this is not a proximeter but a Christian proximeter unless you know to check for it) advertise their religion to me.
        As you say, this is their right just as it is my right to never purchase this item again and to ask Sparkfun to either remove the item or let their customers know that this product comes from a proselytizing company and by purchasing this product you are supporting the advertisement of religion.

  • I was able to avoid hitting Jesus while driving the other day - great product!

  • I created a housing for this in openScad that you can 3d print – It is available on Thingiverse.

    http://www.thingiverse.com/thing:38531

  • Update, The problems commented about are do to a faulty sensor. It is being replaced at NC.

  • How is the accuracy compared to the $2 HC-SR04 modules?

  • So what is a simple cable configuration to connect this with a board? I thought that the PRT-09915 - JST Jumper 3 Wire Assembly might do the trick, but the pins are a bit too close together.

  • i’m desperately seeking a way to color the plastic front of the range finder white. i tried carefully painting it but think it broke the sensor (unsurprising). does anyone know of a clever way to get this done?? thanks!

  • its giving a range of 6" to 14" max, after which it gives 251".Whats the problem?

  • I’m considering using one of these sensors to build my own open source liquid level sensor. The idea is to mount one of these at the top of a 2 or 3 inch diameter PVC pipe mounted vertically in my aquaponics sump and then put a slightly smaller round piece of wood (float) within the PVC pipe to rise and fall with the water level.

    Does anyone have any advice on…

    a) whether this idea will work and b) what sensor I should select for this project?

    I have looked at prefabbed liquid level sensors on this site and others, but they are twice the cost and only measure a maximum of 2 feet. I only need to measure to a depth of three feet, but my project is open source and others may have greater distance needs for their aquaponics systems. If you’d like to learn more about my aquaponics project you can check it out at opensourceaquaponics.com

    Thank you for your consideration! ~ Will

  • Any chance of a non-religious version coming out? My PCB doesn’t have enough space for fairy tales.

  • So the serial on this thing is +-13V that it generates from 5V somehow? Would http://www.sparkfun.com/products/133 work to get a uC to read the sensor?

  • Can anyone tell me if this will this work through my car’s window? Thanks.

  • This thing is awesome. Connecting to an arduino through the analog was very easy. I put one on the front of my robot to do obstacle avoidance, and have recently been experimenting with making 3d sonar maps. I am documenting my experiments at http://www.glowseed.com/mindmash

  • Also, the Analog output doesn’t function properly. With a 5v input, the AN messures 1.67v in the open, and 1.54 when bloked within 4 inches of the sensor, No ranging.
    There also seems to be no 0" range detection as it claims.
    Perhaps I have a bad one.


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