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Re: Ethernet module
Posted: Sat Aug 02, 2025 1:40 pm
by chipfryer27
Yes, you are correct

Yay.... Law of chance and average says I should get something right
eventually
Much like Bob, I think drinking time to celebrate....
Regards
Re: Ethernet module
Posted: Sat Aug 02, 2025 2:47 pm
by RGV250
Hi,
I would have the same issue with the ESP32, I do not want to go down the route of having an external device which looks like the only answer.
It looks like I will have to go back to my original idea of converting the Ping project. I think that is possible but really disappointed I will not get the MAC address as that would help to identify unknown devices.
Bob
Re: Ethernet module
Posted: Mon Aug 18, 2025 12:03 pm
by Steve-Matrix
Rather than try to convert a project that uses an unnecessary external device, you will probably need to start again I think.
If you explain what you are trying to achieve (e.g. what device(s) are you trying to connect to and for what purpose), then someone on the forum might be able to suggest a way forward. There are many ways to interface using the TCP/IP stack, and usually it is much easier to link using the higher protocols meaning you can ignore any of the lower-level protocols (like the MAC layer).
Re: Ethernet module
Posted: Mon Aug 18, 2025 7:38 pm
by RGV250
Hi Steve,
As I think the W5500 example did everything I needed I decided to get one and try that. They are not a lot of money, I just would have liked to be able to use the Pi's on board Ethernet.
I am trying to monitor everything on my home network. The MAC address is actually quite useful as some devices are DHCP so the IP could change.
Regards,
Bob
Re: Ethernet module
Posted: Thu Aug 21, 2025 11:45 am
by LeighM
If you want to use Raspberry Pi and its interface, you could use arp-scan
Code: Select all
sudo arp-scan --interface=eth0 192.168.0.0/24
You could call this in a Flowcode C icon and redirect the output to a file
Code: Select all
system("sudo arp-scan --interface=eth0 192.168.0.0/24 > scan.txt");
Then use the Flowcode File RPI component to process the MAC list in scan.txt
Just another idea

Re: Ethernet module
Posted: Fri Aug 22, 2025 9:42 pm
by RGV250

- Capture.JPG (26.18 KiB) Viewed 310 times
I think I will leave that to you genius's, I am just happy you sorted out the HDMI issue and I will see how I get on with the W5500.
Regards,
Bob