• It ran in to problems after struggling to put the burgers onto the right tray 
• Concerns about Flippy's ability to work efficiently were first raised in March 
• Its creators hope to bring Flippy to 50 other CaliBurger locations across the US

'Flippy' the one-armed robot chef has got its job back at a grill station just months after being 'fired' for being unable to work with humans.

The one-armed robot chef has been re-tooled and is now flipping 300 burgers a day, seven days a week at Caliburger in Pasadena, California, its developers say.

It ran into problems in March after being unable to work in sync with its human colleagues and continuously placing cooked burgers on the wrong trays.

The robot also attracted so much national interest that the CaliBurger was struggling to keep up with the crowds.

David Zito from Miso Robotics says he has got the robot to work better, although it still requires human help to work properly. 

He says staff were initially not given training on how to work with Flippy and it was also struggling to see.  

'Now he moves like a ninja and is more reliable', CEO Mr Zito told USA today. 

'Now he sees better,' he said.  

Its creators hope to bring Flippy to 50 other CaliBurger locations across the US, including Seattle, Washington, DC and Annapolis, Maryland.

The main challenge for Flippy before it got fired in March was working with its human colleagues. 

'Mostly it's the timing,' Anthony Lomelino, chief technology officer for CaliBurger's parent company, Cali Group, told USA Today at the time. 

'When you're in the back, working with people, you talk to each other.'

Flippy the burger-flipping robot was developed by Miso Robotics and uses artificial intelligence to flip burgers on a grill. It then places the patties on a rack when they're done

The one-armed robot chef has been re-tooled and is now flipping 300 burgers a day, seven days a week at Caliburger in Pasadena, California

HOW DOES THE 'FLIPPY' BURGER BOT WORK?

Flippy is an artificial intelligence-driven robot that can flip burgers on a grill and then place them on a bung once they are done cooking.

It is designed with a 6-axis robotic arm and cameras and sensors to see its environment. 

The robots arm is fitted with a spatula tool, allowing it to slide under the patty on the grill and flip it over.

Flippy also alerts human workers when it is time to add the cheese or other toppings.

Its software lets it distinguish between different meats on the grill and when they are done cooking.

'With Flippy, you kind of need to work around his schedule.'

'Choreographing movements of what you do, when and how you do it,' he added.  

The firm had said previously that Flippy could cook as many as 2,000 burgers a day.

Flippy is likely to raise concerns among those who fear we're all doomed to have our jobs replaced by robots. 

But fortunately it does require some human assistance in order to get started.

Before Flippy begins flipping burgers, a human places raw meat patties on the grill.

Flippy's creators argue that the robot will bring some consistency to an industry that grapples with high turnover rates. 

Caliburger has a six-month exclusive period with the $60,000 (£45,000) robots before other chains are allowed to purchase them.

It was originally expected that Flippy would be hired in the 50 CaliBurger locations for 2019, but a large round of funding made it possible to move up the start date.

In July, Miso Robotics received $3.1 million (£2.3 million) in funding from strategic investors, including Acacia Research and Match Robotics VC.

'While the biggest companies in the world are focused on using computer vision and artificial intelligence to drive cars and manage the home, Cali Group will facilitate and lead the adoption of these emerging technologies in the restaurant and retail industries,' said John Miller, Chairman and CEO of Cali Group, at the time of the funding announcement.