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Forum Index : Microcontroller and PC projects : Picomite SDcard

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Rickard5

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Joined: 31/03/2022
Location: United States
Posts: 463
Posted: 04:40am 24 May 2022
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I think roaming around somewhere I think I saw some one some where put legs on a SD card and wire it directly to a Pico? does any one have any information / wiring diagram PLEASE? I'm doing some breadboarding and just want to save the hassle of buying a SD Module
Thanks
Edited 2022-05-24 22:54 by Rickard5
I may be Vulgar, but , while I'm poor, I'm Industrious, Honest,  and trustworthy! I Know my Place
 
Mixtel90

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Posted: 06:31am 24 May 2022
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I did it, but it's fiddly. Piccy
I highly recommend that you plug the PicoMite into a breadboard and buy or make a SDcard module. You can make one using a microSD adapter (the ones that come free with microSD cards. You keep them in a box in case they are ever needed). Just solder some bits of bare wire onto the pads and connect them to a bit of header for rigidity, then plug into the breadboard.
Mick

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phil99

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Joined: 11/02/2018
Location: Australia
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Posted: 08:20am 24 May 2022
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The pads on the adapter are 0.1" pitch so the header can be soldered straight on it.
 
robert.rozee
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Posted: 10:06am 24 May 2022
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  Rickard5 said  I think roaming around somewhere I think I saw some one some where put legs on a SD card and wire it directly to a Pico?



is the below thread where you saw this? peter used a micro-SD to full-sized-SD adapter as a socket for the micro-SD card:

http://www.thebackshed.com/forum/ViewTopic.php?TID=13824

MISO, MOSI, CLK, CS are the four signal lines needed, along with 3v3 and ground. the interface is bitbanged, so the four signal lines can be connected to any otherwise unused GPIO pins on the pico.


cheers,
rob   :-)
Edited 2022-05-24 20:10 by robert.rozee
 
Rickard5

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Posted: 01:42pm 24 May 2022
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  robert.rozee said  
is the below thread where you saw this? peter used a micro-SD to full-sized-SD adapter as a socket for the micro-SD card:

http://www.thebackshed.com/forum/ViewTopic.php?TID=13824

MISO, MOSI, CLK, CS are the four signal lines needed, along with 3v3 and ground. the interface is bitbanged, so the four signal lines can be connected to any otherwise unused GPIO pins on the pico.


cheers,
rob   :-)


That is it thanks Good Memory Rob. Is that a resistor across pin 5&6 (and what value)? is there a Pinout Diagram anywhere? I Literally have a Ton of those SD card adapters and it would such a good thing if I could use then instead of paying shipping every time I need a SD card slot

Thanks
Rick
I may be Vulgar, but , while I'm poor, I'm Industrious, Honest,  and trustworthy! I Know my Place
 
Volhout
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Posted: 03:07pm 24 May 2022
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Hi Rick,

That component is the decoupling capacitor between 3.3V and GND
You can also use a wired component.
The values is something like 100nf
PicomiteVGA PETSCII ROBOTS
 
robert.rozee
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Posted: 04:37pm 24 May 2022
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here are the pinouts on the (full-sized) SD card:

from: http://www.rlocman.ru/i/Image/2010/06/18/4.jpg


cheers,
rob   :-)
 
Rickard5

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Posted: 04:42pm 24 May 2022
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Thanks A lot Guys :) this is going to be Neat :)
I may be Vulgar, but , while I'm poor, I'm Industrious, Honest,  and trustworthy! I Know my Place
 
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