Posted: Mon May 01, 2023 19:17 Post subject: Raspberry Pi and Espressif IoT devices can't connect to WiFi
I have noticed that folowing devices does not connect via WiFi:
Raspberry Pi
Espressif IoT devices
However my phone and laptop connect without a problem.
When I try to connect I briefly can see at the wireless status page that a Legacy device wants to connect but it seems that it get no IP address from DHCP.
Are these known issues and what to do to prevent WiFi issues? _________________ Regards,
Vaako
2x Netgear R7800 Nighthawk - r58389 std (09/20/24)
1x Netgear R7000 Nighthawk r36410
1x Ubiquiti RouterStation Pro DD-WRT r23204 std (12/24/13)
1x Asus RT-N16 SVN revision 20675 NEWD-2 K2.6
1x Linksys E4200 v3.0 r34777 mega (01/31/18 )
1x Buffalo WZR-HP-G300NH B0 B0 Gargoyle FW
1x Linksys WRT600N v1.1 (Bricked)
1x Linksys WRT54GL v1.1 (DD-WRT 26446)
1x Linksys WRT54GS v2.2 (DD-WRT 26446)
1x Linksys RVS4000 (stock fw)
3x D-Link DWL-7100AP (openWRT)
2x TP-Link TL-WA801ND (Bridge mode) 100mW TX-Power
Asus WL-520GU SVN 16403M NEWD-2 Eko std-nokaid
4x Fonera with Gargoyle FW
Last edited by Vaako on Mon May 01, 2023 23:51; edited 1 time in total
Without knowing exact build/configuration of wifi on what router, we would be grasping at straws. _________________ "The woods are lovely, dark and deep,
But I have promises to keep,
And miles to go before I sleep,
And miles to go before I sleep." - Robert Frost
"I am one of the noticeable ones - notice me" - Dale Frances McKenzie Bozzio
Joined: 05 Oct 2008 Posts: 721 Location: Helsinki, Finland / nr. Alkmaar, Netherlands
Posted: Tue May 02, 2023 9:01 Post subject:
On my R7800's IoT network (2,4 GHz only) I have one Blitzwolf smart plug with a MAC pointing to Espressif, Shanghai. Under Advanced settings LDPC is enabled (probably by default).
The 2,4 GHz wireless is at N/G Mixed and Full, 20 MHz bandwidth.
I used to have the 2,4 GHz wireless on auto channel, but a few days ago I fixed it at channel 11.
There are but a few other users around here, part of the time, but auto always left my wireless partly overlapping other signals, and in addition auto channel is not recommended ...
AFAIK, this smartplug with Espressif has always connected OK. When it was in a cabinet and a little bit further away, it did sometimes lose connection temporarily.
As it was only intended to measure power consumption of a new refrigerator, that was not a big thing. My other three smartplugs of the same brand and model have a different WiFi chip manufacturer, so there's no statistic ...
Joined: 21 Jan 2017 Posts: 1795 Location: Illinois Moderator
Posted: Tue May 02, 2023 16:27 Post subject:
Change Firmware to Vanilla- Those drivers seems to play nice with more clients than do DDWRT drivers.
Disable U-APSD, let the client manage the power saving and not force it from the router end. Industry adoption of this setting is debatable- so don't bother using it.
Ack Timing- Don't use 0="Auto" use a hard number. I suggest 1800 or 2250, but I personally use 3150 to avoid cheap clients from blasting out my router signal with shorter timing.
Noise Immunity- Try toggling this one last after doing the above first. I use it on my settings.
Make those changes and reboot the ESP devices too, and things should start to magically work again. _________________ FORUM RULES
What are the current wireless settings? Never mind old screenshots TurboQAM Disable, Firmware Type Vanilla,
U-APSD Disable, Protection Mode None, RTS Threshold Disable, Beacon 200, DTIM 1, Airtime Fairness Disable,
ACK Timing is 450 increments, default 500 is 900. Use 1350 as middle ground, distant low signal clients 1800.
Security, WPA2 Personal and CCMP-128 (AES) checked only. 802.11w Management Frame Protection Disabled.
