Building a robot lawn mower seemed the logical next step for iRobot, the company behind the Roomba vacuum robot.

But the Massachusetts company’s secret lawn mower project was a lot harder than anyone expected.

Now, iRobot finally has something to show after more than a decade of development. Its first robot lawn mower is called Terra and is being unveiled Wednesday.

IRobot CEO and co-founder Colin Angle says the struggle to build Terra has been an obsessive journey of “despair and frustration.”

The mower navigates using technology better known by radio astronomers.

Angle says it was a struggle to build a robot that meets U.S. cultural standards for cutting a perfect lawn. But the robot will first launch in Germany, where there’s already a growing market for robotic mowers.

FILE - In this Thursday, Aug. 25, 2016, file photo, iRobot co-founder and CEO Colin Angle is illuminated in blue-green light while holding a Roomba vacuum in a hallway decorated in patents the company owns, at their headquarters in Bedford, Mass. (AP Photo/Charles Krupa, File)
FILE – In this Thursday, Aug. 25, 2016, file photo, iRobot co-founder and CEO Colin Angle is illuminated in blue-green light while holding a Roomba vacuum in a hallway decorated in patents the company owns, at their headquarters in Bedford, Mass. (AP Photo/Charles Krupa, File)
This Wednesday, Jan. 16, 2019 photo shows the underside of an iRobot Terra lawn mower in Bedford, Mass. (AP Photo/Elise Amendola)
This Wednesday, Jan. 16, 2019 photo shows the underside of an iRobot Terra lawn mower in Bedford, Mass. (AP Photo/Elise Amendola)
This Wednesday, Jan. 16, 2019 photo shows a blade being attached to an iRobot Terra lawn mower in Bedford, Mass. (AP Photo/Elise Amendola)
This Wednesday, Jan. 16, 2019 photo shows a blade being attached to an iRobot Terra lawn mower in Bedford, Mass. (AP Photo/Elise Amendola)
This Wednesday, Jan. 16, 2019 photo shows an iRobot Terra lawn mower in Bedford, Mass. The shell-shaped autonomous grass-cutter is being publicly unveiled Wednesday, Jan. (AP Photo/Elise Amendola)
This Wednesday, Jan. 16, 2019 photo shows an iRobot Terra lawn mower in Bedford, Mass. The shell-shaped autonomous grass-cutter is being publicly unveiled Wednesday, Jan. (AP Photo/Elise Amendola)
This Wednesday, Jan. 16, 2019 photo shows an iRobot Terra lawn mower with remote controller in Bedford, Mass. (AP Photo/Elise Amendola)
This Wednesday, Jan. 16, 2019 photo shows an iRobot Terra lawn mower with remote controller in Bedford, Mass. (AP Photo/Elise Amendola)
This Wednesday, Jan. 16, 2019 photo shows an iRobot Terra lawn mower in Bedford, Mass. The shell-shaped autonomous grass-cutter is being publicly unveiled Wednesday, Jan. (AP Photo/Elise Amendola)
This Wednesday, Jan. 16, 2019 photo shows an iRobot Terra lawn mower in Bedford, Mass. The shell-shaped autonomous grass-cutter is being publicly unveiled Wednesday, Jan. (AP Photo/Elise Amendola)

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