MKR ETH Shield with Nano IOT 33

[russell_roberts]

Hi there

I Have set up the MKR ethernet shield with an Arduino Nano iot 33

I have this working but I wish to check that there is no issue which I have not thought about

Referring to the schematic I see that the shield takes power from the 5V pin.
When I look at the schematic, this is passed to an AP2112K 3.3 Linear Voltage Regulator. Which then supplies power to the W5500 ethernet module and the card reader with 3.3 volts.

I power the Arduino nano IOT 33 with 12 volts to the VIN pin so there is no power on the 5-volt pin. I could add a 5volt voltage regulator but also I think I can just supply 3.3 volts to the 5 volt pin on the Arduino Ethernet shield

I referred to the pinout PDF’s for the shield and the Nano iot 33
My connections are as follows

nano pin D12 CIPO. => Ehternet shield Pin D10
nano pin D11 COPI. => Ehternet shield Pin D8
nano pin D13 SCK. => Ehternet shield Pin D9 SCK
nano pin D10 CS => Ehternet shield Pin D5. CS

nano Vin 12 volts
nano. 3V3 pin =>. Ethernet shield 5 Volts

This does work if I add the following to the setup in the code
Ethernet.init(10);

I am looking for confirmation this is ok before I design an apporpriate PCB

[Juraj]

nano pin D13 SCK. => Ehternet shield Pin D9

and the CS pin is D5 on the shield. with begin(10) it should be wired to D10

what PCB do you want to design?

do you know that you could use a modified Nano Ethernet shield (enc26j60) with my EthernetENC library?
https://github.com/JAndrassy/EthernetENC/wiki/Nano-Ethernet-Shield

[russell_roberts]

I am not sure what you are saying
D10 is correct for the nano but it has to be connected to D5 on the shield
It works
I have a pan tilt system nano iots 33 receives udp data from another arduino
which controls information sent to stepper drivers

so my PCB needs to interface with the ethernet shield and the stepper drivers
I am no electronics expert but its not to complex.

I already have `PCBs with this working using wifi but I want ethernet.
its also got to fit inside my device

Currently I connect the stepper driver PCB board to the nano iot 33 board with an short ethernet cable. I need the wifi module aerial outside the metal housing.

I know it looks like. ahack with the ethernet cable but it enables me to position the arduino for best wifi reception

I use 12 volt power with a 5 volt regulator to provide power for the stepper drivers VIN and 12 volts for the motors

I plan to fit the MKR 1010 upside down ontop of the system and then the nanoiot above this

[russell_roberts]

Yes I re read my post rather than my code Indeed I had writen the pins incorrectly in my post whcih I have now corrected thank you.