Author Topic: [Review Request] micro SD card schematic  (Read 574 times)

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Offline kuelezavTopic starter

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[Review Request] micro SD card schematic
« on: December 15, 2024, 10:04:43 pm »
Hello everyone. I was hoping to get some feedback on my schematic for an SD card socket. Will this design work? My aim is record sensor data (accelerometer, temperature, pressure, etc.) and store onto an sd card using SPI communication with an ESP32. Would this design work? Is there anything I can do to improve it? Any help would be greatly appreciated.
Thanks.

https://1drv.ms/i/s!Asdy5Rhffb67tCDIX1rHm1HR9td0?e=N3WkeD

https://1drv.ms/i/s!Asdy5Rhffb67tB8gssjrHJdLJW0W?e=35cFmd
 

Offline Benta

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Re: [Review Request] micro SD card schematic
« Reply #1 on: December 15, 2024, 10:45:55 pm »
Why are there two schematics?
Just place the whole thing on one sheet and draw the wires.
 
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Online ataradov

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Re: [Review Request] micro SD card schematic
« Reply #2 on: December 15, 2024, 11:03:19 pm »
Your GPIO12 and CLK of the card is connected directly to VCC.
Alex
 

Offline kuelezavTopic starter

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Re: [Review Request] micro SD card schematic
« Reply #3 on: December 15, 2024, 11:08:36 pm »
https://1drv.ms/i/s!Asdy5Rhffb67tCEufFxDQUo24-m3?e=ljAF20

How about this one? For clock, is it better to have it connected only to the GPIO on the ESP32 or should I add a pull-up resistor to CLK?
 

Offline kuelezavTopic starter

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Re: [Review Request] micro SD card schematic
« Reply #4 on: December 15, 2024, 11:15:45 pm »
They're both on the same schematic. I just screenshot these two.
« Last Edit: December 16, 2024, 03:34:39 am by kuelezav »
 

Online ataradov

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Re: [Review Request] micro SD card schematic
« Reply #5 on: December 15, 2024, 11:21:13 pm »
Direct connection should be fine. Or place a resistor and not populate it if it causes issues.

A better idea is to find a working design and copy it.
Alex
 

Offline Benta

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Re: [Review Request] micro SD card schematic
« Reply #6 on: December 15, 2024, 11:25:20 pm »
They're both no the same schematic. I just screenshot these two.
So what's your expectation? If it's screenshots from a half-finished design, it's futile.
Do the homework and THEN ask for a review.
 

Offline kuelezavTopic starter

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Re: [Review Request] micro SD card schematic
« Reply #7 on: December 15, 2024, 11:32:28 pm »
https://1drv.ms/i/s!Asdy5Rhffb67tCJRn_Itcs7zvmNM?e=bZr8OQ

How about this? Is this what you were referring to?
 

Offline Benta

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Re: [Review Request] micro SD card schematic
« Reply #8 on: December 15, 2024, 11:36:40 pm »
Dunno. Needs a login.
 

Offline kuelezavTopic starter

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Re: [Review Request] micro SD card schematic
« Reply #9 on: December 15, 2024, 11:41:47 pm »
Sorry about that. Are you able to see this one?
 

Offline kuelezavTopic starter

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Re: [Review Request] micro SD card schematic
« Reply #10 on: December 15, 2024, 11:50:48 pm »
Apologies. The link may not be accessible. Are you able to see the attached image?
 


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