Q: Data Loggers using WiFi, are suddenly experiencing connection problems.
A: First, check if your WiFi AccessPoint is blocking outgoing traffic.
If not, check the WiFi module version.
In the Maintenance menu: -> Comport-Terminal -> OB Accessory port.
Now, the version of the WiFi module can be obtained with the AT command “AT+GMCR”.
If the module version is lower than V3.0x (as listed below), it might be a TLS issue.
AT+CGMR
“2.0.0-208”
OK
Unfortunately, the WiFi module can’t be upgraded and has to be replaced by a module with a WiFi chip version 3.0x (or higher).
AT+CGMR
“3.0.0-062”
OK
T: If a WiFi and BLE option board are both mounted into the data logger, there is a possibility of signal interference, especially when an external antenna is used.
Both signals are using the 2.4Ghz band.
Investigate possible interference by removing the BLE or WiFi card and check if the problems persist.