External SD Card reader with DuetWiFi

[akhilraju]

Hi all,

Is it possible to connect an external SD card reader to Duetwifi directly using the CONN_SD pins? While also using the paneldue using the four wire cable?
This is the link to the card reader I have:
https://www.amazon.in/Solnoi-Electronics-SD-Reader-Arduino/dp/B07J1X11GS

I'm using Duet WiFi 1.03 + DueX2 + PanelDue 7i
Reprapfirmware 2.01

Thanks in advance.

[dc42]

Yes that should work, if you wire it up correctly. It will be much slower than the internal SD card, but should be fast enough to print from.

[akhilraju]

@dc42 thank you

[CaiJonas]

@dc42
Do you have some suggestions or links what to buy? I tried it with the sd card reader from the radds display but I want to use an sd cards reader without a display.

Best regards
Cai

[Mabover]

I used this adapter on my kossel build as the position of the SD socket on the paneldue lcd was not in a good spot for how I mounted the lcd
SMAKN SD Card Reader Module Chip SD SPI Interface, SD Card Socket SD Card Reader Module https://www.amazon.com/dp/B00VFH0YS0/ref=cm_sw_r_cp_apa_i_mkZ3Bb8YEVBXS

I searched for arduino sd card to find sd card adapter boards instead of USB SD card readers. Do make sure the adapter you buy is 3.3v not 5v. I confirmed this one was when I received it prior to installing it.

I ended up using shielded cable to make the connection between the Duet wifi and the adapter to minimize the risk of noise on the lines as I had to run near the power supply in my printer and it's a bare power supply inside a custom 3d printer enclosure that holds the panel due.

[T3P3Tony]

@caijonas as @Mabover has said, a 3.3V SD or uSD socket with an SPI connection is all you need. Keep the wires as short as possible,

[CaiJonas]

Thank's guys, I will order this one from Amazon. That should work?

https://www.amazon.de/COM-FOUR-Karten-Leser-Modul-Sockel-Arduino/dp/B00WE8BJ1K/ref=sr_1_5?ie=UTF8&qid=1541357042&sr=8-5&keywords=sd+card+reader+arduino

Best Regards
Cai

[T3P3Tony]

@caijonas yeas it should do, just don't bother with the 5V pin

[dc42]

I could be wrong (I am out of the office so I can't easily check), but I am fairly sure you do need a 5V SD card adapter. The reason is that the SD card needs a 3.3V supply, and the CONN_SD card only provides 5V.

[akhilraju]

Hi all,

I've connected the SD Card reader using a 26 AWG ribbon cable and I'm happy to say that its working. I did up to 13 hr long prints. The cable is more than 1m long. The only problem I've noticed is when I started the print from DWC I couldn't pause it using paneldue. Paneldue seemed unresponsive. I only noticed it once. Haven't checked it again.

[paboman]

Hi,
I also need to place an external card reader in a different place (near the Duet Wifi)

1. should I use the 3.3v or 5v to power the card reader ?
2. Why the card reader has 2 GND inputs ?
3. Can someone please confirm that connections below are right, I want to be sure to not to damage the Duet board.

GND > GND
3.3v > 3.3v
CS > SPI0_CS0
MOSI > SPI0_MOSI
SCK > SPI0_SCK
MISO > SPI0_MISO

thanks!

[tekstyle]

@paboman is this the connection that worked for you? i have the issue with the paneldue ribbon cable not long enough to be in the idea spot.

[itsM4tt]

@paboman
Old thread but dropping in to confirm the following works for me:

SD > DUET
GND + GND > GND
5v > 5v
CS > SPI0_CS0
MOSI > SPI0_MOSI
SCK > SPI0_SCK
MISO > SPI0_MISO