<![CDATA[Lora module P2P mode not receiving]]>Trying to get a pair of LoraAS923 units working in P2P mode, using AtomS3.

Sending is reported as working, but the second unit will never receive. I've triple checked all parameter settings, they match on both units.

Has anyone actually got this working (on this or other frequency units?).

]]>https://community.m5stack.com/topic/7740/lora-module-p2p-mode-not-receivingRSS for NodeWed, 29 Apr 2026 00:09:27 GMTFri, 08 Aug 2025 01:31:40 GMT60<![CDATA[Reply to Lora module P2P mode not receiving on Fri, 08 Aug 2025 07:01:06 GMT]]>@adamm5

Well ChatGPT solved my problem....increasing the spreading factor to 11 has suddenly made everything work. Not sure why such a high SF would be needed between two devices on the same desktop? Will soon find out.

In the meantime, the following table gives some interesting perspective on the transmission time for a 19byte payload.

SF	Symbol Duration	Payload Symbols	Total Symbols	Airtime
7	1.024 ms	37	51.25	0.052 s
8	2.048 ms	37	51.25	0.105 s
9	4.096 ms	37	51.25	0.210 s
10	8.192 ms	37	51.25	0.420 s
11	16.384 ms	37	51.25	0.839 s
12	32.768 ms	37	51.25	1.678 s
]]>https://community.m5stack.com/post/29706https://community.m5stack.com/post/29706Fri, 08 Aug 2025 07:01:06 GMT