ethernet to esp breakboard

[CNCModeller]

@apak That's awesome, and just what I was trying to do.

Do you have an update schematic (after fixing your mistake) so I can make up a board for myself?

Many thanks
Barry M

[jay_s_uk]

@apak if you're able to update the firmware and get an IP you should be fine.
On the LPC/STM port any issues we normally see with wiring etc prevent users getting that far, so for you to get an IP you'll be fine

[apak]

@cncmodeller sure, I will post the gerber so you can order as much as you want

[CNCModeller]

@apak said in ethernet to esp breakboard:

@cncmodeller sure, I will post the gerber so you can order as much as you want

That's brilliant, thanks!

[alankilian]

@apak If you ever want to do this kind of thing again, you might want to use these surface-mount 0.1" header pins.
https://www.digikey.com/en/products/detail/oupiin/2015-1X40G01DBB/13251225

That way you could make the board just as big as the WiFi module instead of making it twice as big.

This is awesome project. Congratulations on getting it working.

[apak]

@alankilian so I just solder those on the botton layer and the esp07s on top, nice, lest see if the footprint is available at easyEDA

[apak]

@cncmodeller https://easyupload.io/j3zvfh this is actual prototype

[CNCModeller]

@apak that's great thanks.

Will the surface mount headers idea still allow the ethernet module to fit if required?

[apak]

@cncmodeller sure, why not?

[CNCModeller]

@apak said in ethernet to esp breakboard:

@cncmodeller sure, why not?

I only ask as the ethernet headers on my Duet are 1/height.

[dc42]

@apak said in ethernet to esp breakboard:

Do you think that I could get any trouble using this board?

It will almost certainly generate more EMI than the on-board WiFi module, so getting CE certification for a printer using it might be difficult. Other than that, I don't see any problems. The critical traces to keep short are the ground traces and the SPI traces.

[apak]

@dc42 in that case I will try this breakboard, shorter pads

[o_lampe]

@apak
The positions of some 'vias' are pretty close to adjacent pads. The routing could use some cleaning...

[apak]

@o_lampe I have no tecnical education, I used the autoroute feature. Already ordered.

First pcb disconnects from wifi once you start to print....so DON´T use first PCB

[jay_s_uk]

@apak have you included any resistors that may be required?

[apak]

@jay_s_uk nope

[jay_s_uk]

@apak i suggest you review the schematics.
I don't know what resistors aren't included onboard when its the ethernet module and some may be required to be added on certain lines.

[apak]

@jay_s_uk don´t see any, looks like direct pin contact between "comm alternate header" and ESP pins

[jay_s_uk]

@apak what about these ones i've highlighted in red?
These are the ones that probably won't be there on an ethernet board.
I only have wifi boards here so can't check.
maybe @T3P3Tony or @dc42 can comment?

[dc42]

The other thing that may be missing on an Ethernet board is the 74HC74 chip. However, if you use wifi firmware 1.24 or later then you can bypass it by installing R82.