Cellular Modems

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  Connecting V2 LTE modem to Rpi4
  • Henry Cappel  

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  Great thank you!
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  PCIe M.2 E-Key Wifi compatibility with 5G Modem Carrier
  • Eloi  

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  @Eloi Hi Eloi, We only support B key on that design and do not support any plug in adapters like your link. There is strong certainty that it will not work. B key vs A/E key is not just a pin block difference, but several electrical differences exist as well (voltage settings and port options). B key is largely defined for modem devices which run on 1S "vbat" and A/E key devices largely for WiFi or I/O devices which run at 3.3V.
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  LTE v2 no connector
  • Henry Cappel  

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  @Henry-Cappel let me send an email to kick things off
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  "UIM Uninitialized" error even when SIM Card is not locked
  • Aks  

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  @Chad-Sweet My region operating bands in India are 4,30 and 1. All these bands match with modem since I was using the modem since past few months successfully. All of sudden it has stopped working. What inference can we derive from above logs? My region code are getting fetched correctly but registration isn't happening for Sim cards. I have tried multiple sim cards as well but no success. Can it be hardware issue? Is there any way to factory reset modem? How to debug this further?
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  Access kernel debug serial port from M0090 5G modem
  • Moderator  

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  By default on all M0090 variants, all the transceiver/buffer circuits which take the 1.8V Kernel Debug UART to 3.3V TTL for J6 are DNI'd (not populated). The only thing that can be done is to probe on raw circuit pad locations for TX and RX to get the signals at a 1.8V level. Here are those snapshots to help guide you should you wish to pursue that route: However, the ICs are located on the bottom side of the PCB, so when mated with Voxl2, you cannot probe directly, which would require soldering on wires to the PCB pads. That would likely violate any warranties on this specific PCB if you did that.
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  LTE stops working after some time
  • Philemon Benner  

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  @Chad-Sweet Ok thanks for your time.
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  Required antenna
  • local ad  

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  @modalab Thanks, starting my assembly and verifying parts. I didn't recall any antenna with the kit, will have to get some in the mail. Thanks for the reply
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  Using a raspberry pi pivpn to tunnel for communication
  • David Smyth  

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  @David-Smyth Once again, thanks! WireGuard does indeed look like a nice alternative to openVPN.
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  SIM card pin issue for LTE v2 module
  • David Smyth  

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  Thank you very much for sharing!
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  Which controller are you using in the LTE demo video?
  • Moderator  

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  @RichieRich said in Which controller are you using in the LTE demo video?: https://www.razer.com/mobile-controllers/razer-raiju-mobile/RZ06-02800100-R3U1 Thanks!
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  LTE not Registered
  • Chuck Bokath  

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  @tom The crazy continues. The ATT sim card works at my home, though not in the office. I have an ATT phone, and it works at the office, though the data sim card does not. arrgh.
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  LTE - Modem Works But Cannot Ping
  • derrick0799  

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  @vmassague Awesome!
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  LTE Modem Registration Issue
  • Chuck Bokath  

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  @Chuck-Bokath Are you using an LTE v1 or v2 modem? Are you using voxl-modem in order to connect to the network?
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  5G modem recommendation
  • Aldo Castro Freire  

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  We expect to have more product announcements later this summer around 5G
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  IOT Sim-card integration
  • Arrowtec  

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  @Arrowtec Okay this all looks normal, have you tested this SIM card in a different device to confirm that it is indeed functional?
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  LTE Modem v2 Registration Error
  • Arrowtec  

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  @Arrowtec This seems like it could be either a SIM card issue or an APN issue. Can you test the SIM card in another device such as a cellphone to confirm that it is functional? If it is, I would use voxl-configure-modem and confirm that you are using the correct APN in order to connect to the network.
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  Speed of LTE-modem recognition
  • Arrowtec  

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  @Eric-Katzfey I figured that would be the case. Atm I am just letting it boot on it's own; the systemd service file is an idea that i will test and afterwards I will get back to you.
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  LTE Modem "Feather is Disabled"
  • scottesicdrone  

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  Sounds good, thanks!
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  Which LTE CARRIER SHOULD I ORDER FOR CANADA
  • Aldo Castro Freire  

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  @Aldo-Castro-Freire thanks for the feedback, do you mind sharing the openVPN Client and Server versions you ended up using that worked? We've tested using server v2.4.8, voxl-vpn (v2.1.3 inside that), and OpenVPN Connect ver 3.2.2 on Adroid.
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  Modem not working
  • Aldo Castro Freire  

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  No one has replied