Omega2 LTE just launched!
@György-Farkas another useful contribution, thank you. only problem i have now is my color printer died 2 months ago. but my b&w laser will be ok until i can afford color again. :)
While the main intended use-case for the cellular connection is the use of high-speed mobile data, this is very likely possible by sending AT commands from the Omega to the cellular modem. I would recommend looking for the AT command reference for the EC25 cellular modem.
An alternative to sending SMS messages directly from the Omega2 LTE would be to use the data connection to communicate with an online service like Twilio to programatically send text messages.
Omega2 & Omega2S
Correct, the surface-mount Omega2S is a repackaged version of the through-hole Omega2. Think of it as a super-set of the through-hole version, check out our documentation for a full list of the differences between the two models.
Regarding the +/non-plus variants, it refers to the amount of memory and storage, no difference in the pinout.
The hardware reset pin is available on all of the models. Look for the pin labelled
RSTon the pin-out diagrams.
Watchdog & Unattended Operation
For more info on using the watchdog, please consult the MT7688 datasheet. There are 3 registers that control the watchdog's operation, you can configure them through the
/dev/memdevice, or using the
devmemprogram. You'll also need to look at the
GPIO1_MODEregister to adjust the pin multiplexing so that the WDT signal is brought out to the pins.
You'll have to ask the OpenWRT developers about the stability of init.d :)
FWIW, we've never seen any major stability issues in our experience.
Could you please advise which variant of the Quectel EC25 will be used in the global model?
From the pre-production images available it would seem that you are using EC25-A for the North American model, but I can't reliably determine which one you'll be using for the rest of the world, unless I have missed that item somewhere.
Also, the images location referenced in the Omega2-LTE github repo README doesn't currently exist.
If anyone is interested, here is the product page for the LTE module Quectel LTE Standard EC25 and there are a large number of documents available for download (after registration).
I would like to know if the Omega2 LTE supports Videotron, a big wireless provider in Quebec, Canada. From, their support, I'm told:
- LTE devices must support Band IV (1700 MHz) in LTE, as well as Band II or V in HSPA (850 MHz/1900 MHz)
- Non LTE devices must support 1700 MHz / 2100 MHz in HSPA (3G/GSM)
The GNSS receiver does not offer a PPS output. Would it be possible to use the NMEA messages to run the NTP server?
Thanks for clarifying that. Yes, gpsd can communicate with the usb serial port to accept NMEA sentences and keep ntpd disciplined. I'm not sure if gpsd has been ported to OpenWRT MIPS but it definitely can be.
Another tiny question, can the GPS receiver be used if LTE is not utilized?
Correct, EC25-A modem for the North American model.
The Global model uses the Quectel EG25-G modem.
Images in Repo
Fixed! The images are now in the repo.
Wireless Carrier Support
To see which bands are supported by the two different models, check out the chart here:
It looks like gpsd has been ported to OpenWRT:
You'll probably have to enable the OpenWRT repos on your Omega2 LTE to install it.
See the guide in our documentation: http://docs.onion.io/omega2-docs/using-opkg.html#using-opkg-switch-to-lede-repos
GNSS with No LTE
Yes, it is possible to have the GNSS receiver and the LTE connection disabled. Just note that the modem will still likely fire up the LTE modem to use cell towers to assist in geo-location.
Is it possible to get schematics of Onion Omega2 LTE board ?
@Aurélien-Fi Here you are!
(or - if you can - please scroll up and take a look at this post ;)
Thank you very much for the answer :)
We would like to make our own boards embedding an omega and a quectel EG25-G modem but it seems this modem is not available on mouser or farnell.
I'm afraid about the procurement of this component !!!
@Aurélien-Fi pine64 the single board computer maker is going to offer the pinephone in the next 6 months or so and it will use this modem. in posts from the devs i read that it usually works that you need to inquire to quectel.
@Douglas-Kryder thank you very much for the informations :)
I haven't heard anything from Onion or Crowd Supply. What is going on with shipments, please? I should have my order in hand or at least an explanation of the delay. I tried Crowd Supply but it's a black hole over there.