Troubleshooting

Topic	Replies	Views	Activity
Help! My Notecard is not connecting to the Cell Network! NOTE: An updated version of this guide is available here: Diagnosing Cellular Connectivity Issues ▶ Summary ▶ Version This guide assumes you can communicate with the Notecard locally with serial, USB, or I2C and you can…	4	2086	May 13, 2022
About the Troubleshooting category	0	711	November 24, 2020
Notecard firmware not sorted by reverse creation date	2	25	January 14, 2026
Alternatives to AWS SQS (Access Key) Routes	3	49	January 8, 2026
Outboard DFU woes: "DFU image is not valid 9(0) {odfu-fail}"	3	38	November 21, 2025
I2C and UART degradation	6	65	November 10, 2025
Failed to reset Notecard Exception Issue python	6	60	October 23, 2025
Session Close/Open Behavior while Swan sleeps	9	85	October 20, 2025
GPS not locking when in periodic mode (but does in continuous)	4	48	August 14, 2025
GPS attempt requiring initial cell connection	5	45	August 13, 2025
Error condition spotted on v8.1.4 LTS - mutexLock nested! file.c:216. mutex:127 in _health.qo firmware-release , lts	8	82	August 4, 2025
Wifi Notecard connecting followed by 'Firmware Exception and Timeout'	7	79	August 1, 2025
NOTE-WIFI works with our I2C setup, NOTE-ESP fails to work on I2C	9	102	July 10, 2025
Failed to aquire I2C lock while trying to put Swan to sleep with CircuitPython	2	35	June 27, 2025
Communication Failure from WIFI to Cellular	7	57	June 13, 2025
Anyone experienced this before?	1	31	June 12, 2025
[Wireless for Opta] Constant I2C errors	5	95	June 10, 2025
Utilizing ESP32-S3 USB-UART in tandem with UART0 for Notecard Comms	8	178	May 23, 2025
Inconsistent rsp when following the RPI tutorial	2	27	May 20, 2025
Only one of multiple Notes is successfully routed	24	245	May 13, 2025
Is there an easy way to determine if Notecard is seeing an external SIM?	2	46	May 7, 2025
I2C error encountered during I2C transmit hook execution	5	152	May 5, 2025
Serial connection	3	37	April 30, 2025
Unable to get reception	3	28	April 29, 2025
How do I capture a trace information from Notecard?	4	3363	April 25, 2025
Explanation on lora / arduino setup	5	71	April 20, 2025
Manual MQTT routing failing	2	56	April 18, 2025
Cannot Get a GPS fix	21	247	April 17, 2025
NoteRequest Memory Leak on Swan	2	62	April 7, 2025
Notecard Lora failing on first hub.sync request	6	40	March 31, 2025

Help! My Notecard is not connecting to the Cell Network!

NOTE: An updated version of this guide is available here: Diagnosing Cellular Connectivity Issues ▶ Summary ▶ Version This guide assumes you can communicate with the Notecard locally with serial, USB, or I2C and you can…