SERVICE NOTE: Verify you have Coin Cell Battery installed

Annoucements
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Verify your CoinCell battery is present and installed properly or you will have problems running the motors! The coin cell battery keeps the time between power-off intervals and is critical!

We were unable to get production to load the CR2032 battery so all first run units (all manufactured units shipped to this date) did not ship with a critically required coin cell battery loaded into the connector on the back of the controller board (near top - center on back of board).

Also it is very easy to bend the ‘dual forked’ contact that must make contact to the negative side of this CR2032 battery or you in short do not have a battery.

Please review this picture and get one of these very very common batteries generally available all over the place at stores that have a camera or ‘tech’ department.

We are sorry for this inconvenience but it was something that happened out of our hands.

BatteryClipInstallNote
BatteryClipInstallNote1715×1633 494 KB

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I just received the Magni Silver which I ordered recently (Order no. 4933705088368640 dated 21st May 202). I But I cannot find the socket for the CR2032 battery. Can you send me a photo which location indicated.

Thanks.

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You can find this on our ‘unboxing’ page on our learn document site.
See the very end of this page for battery which is on the back of the MCB board (main board)

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Thanks for your reply. I have found it eventually. It is blocked by the cross beam of the robot structure.

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Yes, this is unfortunate and makes it rather hard to put it in there.
The probem is we used to ship them but air freight restrictions and other legal issues have made us NOT load this battery on recent runs of Magni units. This is NOT a matter of cost. We would GLADLY put the darn battery in there and in fact had to take if OFF of the parts list. We have been told by our supplier we cannot ship a battery with the board. So it becomes a burden for users. Sorry but it is out of our hands. Take care and stay healthy, Mark

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Thanks for the prompt reply. I knew about the restriction. Since the battery is available locally, this is not a major issue now despite the difficulties in slotting it in. However the exchanging of the flat battery later on will pose a major challenge. Ubiquity should consider changing the battery location to a more accessible one.

I am now facing another challenge when I follow the steps in https://learn.ubiquityrobotics.com/sensors. After entering ’ sudo nano etc/ubiquity/robot.yaml’, Nano opens up a file with no content and says “Directory ‘etc/ubiquity’ does not exist”. Can you help?

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About the file, looks like there is a typo in the documentation.

The command should be sudo nano /etc/ubiquity/robot.yaml (notice the leading slash in the file name).

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Thanks. It is working now.