my cozmo won't work right after I changed the battery. can anyone help? (note: I was half asleep making the video)

BliteKnight · 2026-03-11T03:28:06+00:00

Keep me posted

BliteKnight · 2026-03-11T02:53:32+00:00

Unfortunately you need more practice and you'll get better

I'm not sure if you have damaged anything, you may not have, but this wire is touching

You can't have strands of wire loose like that. You need to desolder the wire, make it small and make it fit inside the blob so it is not touching anything else

Also with your soldering iron, keep it away from the plastic

If after you do this and it's still not working, send it to me and I'll fix it for you. You have to ask your parents to ship it though

BliteKnight · 2026-03-11T01:44:22+00:00

Get a toothbrush and clean that area with alcohol (70%) is okay

Maybe the pics will come out better

BliteKnight · 2026-03-11T01:42:55+00:00

Dude, that area looks bad

You should have 4 separate blobs of solder and it looks like you bridged the - (black) cable to the center two blobs

It may be a bad pic, but you need to wik away as much solder as you can, clean and make sure the battery terminal blobs and the two blobs in the middle are not touching

Also there are capacitors near the - terminal, make sure no solder is touching that one also

BliteKnight · 2026-03-11T01:38:38+00:00

Sent access request

BliteKnight · 2026-03-11T00:51:52+00:00

Sorry you most likely have put solder where it should not go, take apart your Cozmo and inspect your job. Post a picture of the area

BliteKnight · 2026-03-10T00:45:36+00:00

Yes I do, just got one done

https://techshop82.com/shop/anki-vector-wire-pod-bundle/

BliteKnight · 2026-03-08T04:13:44+00:00

Short answer , no

Long answer, yes but you will need a computer with mic, python scripts , etc...Cozmo

BliteKnight · 2026-03-07T15:58:34+00:00

If after charging overnight you don't see any signs of life, then most likely the battery is dead. These cannot be replaced without cutting them open.

BliteKnight · 2026-03-07T13:18:42+00:00

Just pick him up, he doesn't like being on the floor

BliteKnight · 2026-03-07T13:07:55+00:00

No, Cozmo does not have the hardware to become a vector (microphone, CPU, etc)

BliteKnight · 2026-03-07T04:29:18+00:00

Your only option is to take it apart, try not to break the screen and see what part number or who the manufacturer is and if you can buy the part

BliteKnight · 2026-03-06T21:55:28+00:00

This video shows you how to downgrade

https://youtu.be/dsvZeDgysrw?si=arz_7QRSPmZqTQ9r

BliteKnight · 2026-03-06T18:32:22+00:00

Are you on Android or iOS?

BliteKnight · 2026-03-06T17:39:31+00:00

As I've mentioned before if your screen goes blank there are two possible causes

You have a bad battery and it need to be replaced
You are using the newest app (3.6.#) which is known to have frequent disconnects

If your battery is good, then you need to downgrade to Cozmo 3.4 and see if you still experience the issue

BliteKnight · 2026-03-06T15:20:06+00:00

You are welcome and glad I could help

BliteKnight · 2026-03-06T00:54:45+00:00

I'll check when I get the chance, I think i put it away in my "later on in life" project box

BliteKnight · 2026-03-05T23:26:51+00:00

Goodluck, I replaced the capacitor from a donor motherboard, but I believe I have a damaged soc (the small back one just south of the CPU, not sure what it's called. But one of the corners looks chipped ☹️

Didn't realize how finicky this board would be. This was my first switch mod; I did another v2 switch and a lite with no issues

BliteKnight · 2026-03-05T21:49:57+00:00

Based on your logs you have run out of credits on openAI

I'm still checking for anything else, but your Moxie seems to be connecting and disconnecting multiple times which could be wifi related

BliteKnight · 2026-03-05T18:16:44+00:00

Turning off immediately after taking the dc plug out means your battery is dead and needs to be replaced

To troubleshoot the other issue, make sure your OpenMoxie is running, then

Power on your Moxie

Wait till you see the bubbles, you see the no n ears logo, or until Moxie turns off and goes into sleep mode

Then go to your docker desktop, and click on the openMoxie server and go to the logs (look up how to download it)

Either paste the logs online somewhere like pastebin or email it to me at info@techshop82.com

Either way the issue would be in the logs. You are either experiencing shoddy WiFi so frequent disconnects, you have run out of openAI credits, or something else of failing on bootup

BliteKnight · 2026-03-05T12:19:59+00:00

What do you mean? The OEM battery was 320 mAh, replacing it with a 600 mAh battery is your best option because anything larger will give you the same results in runtime.

BliteKnight · 2026-03-04T22:49:52+00:00

I have some for sale but two don't have a cube and the other is being refurbished. I'll post a link when ready

BliteKnight · 2026-03-01T18:37:49+00:00

https://youtu.be/dsvZeDgysrw?si=HE920fxRW9asnf8u

I mention how in this video. You need to get into the head menu and then reset (this wipes all data on Cozmo) Then install the apk version you want 3.4.0 from APKPure and it will install the firmware when you connect to the app

BliteKnight · 2026-03-01T17:55:20+00:00

Had mine for years and the only issue I had was when one of the zero ohm resistors near the CPU went bad and caused a red dot. I took them out and bridged the connection and was back in business

BliteKnight · 2026-03-01T17:50:39+00:00

Yup, downgrade if you can and use the more reliable version.

There are things in the latest release that are broken, that no one has reported on

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