Search found 5 matches

by robertson80
Sun Mar 24, 2019 8:35 am
Forum: Hardware
Topic: ESP32-WROOM-32U doesn't work with LAN 8720
Replies: 6
Views: 10144

Re: ESP32-WROOM-32U doesn't work with LAN 8720

I'm surprised there's any difference between 32U and 32D.

We have a board with a wroom-32U with a LAN8720 working ok. We just followed the LAN8720 design guidelines / reference designs and it worked. Never tried the board with a 32D through.
by robertson80
Mon Oct 01, 2018 1:25 pm
Forum: Hardware
Topic: Ethernet connection pins
Replies: 2
Views: 5397

Re: Ethernet connection pins

Yes those are the correct pins. Care must be taken on GPIO0 to on startup to prevent it booting into flash mode thugh.
by robertson80
Sun Sep 30, 2018 4:42 pm
Forum: Hardware
Topic: Ethernet connection pins
Replies: 2
Views: 5397

Re: Ethernet connection pins

Those are the pins I connected my LAN8720 to and it works ok. Take care with GPIO0 to prevent it entering flash mode accidentally from the clock input though.
by robertson80
Tue Sep 25, 2018 8:09 pm
Forum: General Discussion
Topic: WROOM32-U with unconnected antenna
Replies: 2
Views: 3669

Re: WROOM32-U with unconnected antenna

Thanks, Better safe than sorry.

Jamie
by robertson80
Tue Sep 25, 2018 1:00 am
Forum: General Discussion
Topic: WROOM32-U with unconnected antenna
Replies: 2
Views: 3669

WROOM32-U with unconnected antenna

Can anyone advise if it's safe to use a WROOM32-U without an external antenna connected? Can it be damaged?

Thanks

Jamie