Hi, there has been a questions whether there is an Australian topic where we can discuss general questions and to start closer cooperation between the Australian TTN communities and its users.
I hope this new topic can achieve this goal.
As the first post we had a talk to couple of people to decide on the preferred channels to use in Australia to facilitate roaming between different cities/communities. For this it is essential to use the same channels. So far ch 8-15 was the winner in spite we use different ones here in Melbourne. However, we are ready to change in order to help in this compatibility issue.
If you are a GW operator or an initiator, we would like to know your opinion on this or on anything else that is specific to the Australian communities. Thanks.
I am not sure whether this is the right thread but I have to start somewhere. I am currently trying to connect to the TTN gateway on the roof of the QUT building, Brisbane, Australia. The hardware I am using is Arduino-Pro/Pro Mini-based, i.e. ATmega328, 3.3V, 8MHz + Dragino LoRa Bee, 915 MHz, based on HopeRF RFM95W (SX1276).
The Arduino library I am using is the IBM LMIC library to be downloaded with the Arduino library manager:
I am porting it to the Australian regulations as far as I need it to connect the TTN gateway. The frequencies are already adapted. (there is more: TX power, duty cycle, SF, ...). I would like to send data via 125 kHz bandwith channels with SF10 and 30 dB power. (I don't know if my hardware can provide this power). According to the companion "LoRaWAN™ Regional Parameters, v1.0" it is required to use 20(!) channels for frequency hopping when sending with max output power 30 dB.
When I understand your TTN gateway config file correctly you provide 8 RX channels on the gateway:
Just for clarification, am I right when I assume you are using the following channels on the QUT Brisbane TTN gateway:
AU ISM 915 Ch# | direc | f/MHz | BW/kHz | data rate 8 | up | 916.8 | 125 | DR0 - DR3 9 | up | 917.0 | 125 | DR0 - DR3 10 | up | 917.2 | 125 | DR0 - DR3 11 | up | 917.4 | 125 | DR0 - DR3 12 | up | 917.6 | 125 | DR0 - DR3 13 | up | 917.8 | 125 | DR0 - DR3 14 | up | 918.0 | 125 | DR0 - DR3 15 | up | 918.2 | 125 | DR0 - DR3 65 | up | 917.5 | 500 | DR4 0 | down | 923.3 | 500 | DR8 - DR13 1 | down | 923.9 | 500 | DR8 - DR13 2 | down | 924.5 | 500 | DR8 - DR13 3 | down | 925.1 | 500 | DR8 - DR13 4 | down | 925.7 | 500 | DR8 - DR13 5 | down | 926.3 | 500 | DR8 - DR13 6 | down | 926.9 | 500 | DR8 - DR13 7 | down | 927.5 | 500 | DR8 - DR13
Hi guys, I need a pointer or ten to push me in the right direction. I got a spare Raspberry and decided I want to learn a bit more about LoRa so I ordered one of those Modtronix inAir9B devices. Configured it according to the CongDucPham's documentation. Once it booted up I realised the frequency is wrong and I don't understand enough of the code to know what to change.
Is there a version of the code that is for Aus? or is there other code/lib that I can use?
Hey Rolf, I'm trying to do the same with LMIC and an Adafruit Feather 32u4 rfm95w Lora 900mhz and am getting stuck on what frequencies I should be defining for Australia. Did you manage to resolve, would you mind sharing where you got to? Cheers Dave