Message sent per day for lorawan?

1

Hi,
how to calculate a number of message sent per day for lorawan in different SF12, …SF7 and different packet size ?

2

You need to use the Semtech ‘LoRa Calculator’ tool. Not sure where it can be downloaded these days, Semtech seem to move it around.

This website does a reasonable on-line job, it seems to agree with the Semtech tool when I tried it.

https://www.loratools.nl/#/airtime

Most of the LoRaWAN\TTN defaults are listed, so you need to supply the spreading factor used and the packet payload length in bytes. This will give you the on-air time in mS.

Fair use limit is 30 seconds of air time per day.

3 Likes
6

Cant see how it follows on as such, transmission of pictures via TTN is not going to be pratical in a free to use system, but to calculate air time you can follow this advice;

https://www.thethingsnetwork.org/forum/t/message-sent-per-day-for-lorawan/34123/2

Although a 10 bytes of data you want will grow a bit by the time the addressing info is added, maybe by an extra 14 bytes or so.