Mojo no longer working

Hardware
1

I had been successfully using Mojo for a week or two. But it is now returning the response:
{‘err’: ‘you have no mojo {no-mojo}’, ‘milliamp_hours’: 2193.52, ‘crc’: ‘0002:0CCD3A3F’}

I am running ‘version’: ‘notecard-u5-9.1.1’. I have tried switching cables and the Notecarrier-F(v1.3) Qwiic port I was using, as well as making sure it was connected before supplying power to the notecard. The NoteCarrier is getting battery power through Mojo.

I am open to suggestions as to my next move. I can’t really put my finger on exactly when it stopped working. I was using a Notecarrier-X and had everything in a plastic enclosure while testing out hostless gps readings. I did notice logging stopped at that time. Could something have shorted?

Thanks,
Joe

2

Hi @scavoj

Did your Notecarrier power cycle at some stage, without the Mojo connected?

The Notecard checks for a Mojo at startup and if it does not detect it, it assumes it isn’t present. It is not treated as ‘hot swappable’.

Let me know if a power cycle with the Mojo attached, forces it to re-appear again.

Thanks,
Alex

3

Alex,

The answer to your first question is “probably”. I lost track of what I did and didn’t do.

There is the order that I just tried. If this is not correct please let me know.

  1. Plugged the Qwiic into Mojo then into Notecarier-F.
  2. Plugged the Lipo battery into Mojo.
  3. Plugged the Mojo into the Notecarrier-f
  4. Got a flashing red light from the Notecard, and then it went out.
  5. Got a flashing green light from the Notecard.
  6. Plugged the USB into Pi 5.
  7. Plugged the micro-USB end into Notecarrier-F.
  8. Connected through the web page.
  9. Issued {“req”: “card.version”} and received a reply:
    {
    “version”: “notecard-9.1.1.17181”,
    “device”: “dev:351077454560213”,
    “name”: “Blues Wireless Notecard”,
    “sku”: “NOTE-WBGLWT”,
    “ordering_code”: “HB0YT1N0AEAU”,
    “board”: “5.13”,
    “wifi”: true,
    “cell”: true,
    “gps”: true,
    “body”: {
    “org”: “Blues Wireless”,
    “product”: “Notecard”,
    “target”: “u5”,
    “version”: “notecard-u5-9.1.1”,
    “ver_major”: 9,
    “ver_minor”: 1,
    “ver_patch”: 1,
    “ver_build”: 17181,
    “built”: “Apr 15 2025 11:34:37”
    }
    }
  10. Issued a {“req”: “card.power”}
  11. Received Reply:
    {
    “err”: “you have no mojo {no-mojo}”,
    “milliamp_hours”: 2193.523657000001
    }

Thanks,
Joe

4

@scavoj as step 12. can you try issuing a {"req":"card.restart"} and then try {"req": "card.power"} again?

5

Did the card.restart then card.power again with same result:
{
“err”: “you have no mojo {no-mojo}”,
“milliamp_hours”: 2193.523657000001
}