ESP8266 Community Forum

Using the notes posted here I've designed a ESP8266 SD card board which you can buy here:

http://www.whitefordresearch.com/produc ... e-preorder

I also wrote up my notes on the SD card interface here:

http://41j.com/blog/2016/08/the-esp8266-and-sd-cards/

I've also been able to get the SD card working with the native esp-open-sdk using MetalPhreak's SPI library with some modifications (critically to enable duplex transfers).

I have it working when i do IP/edit but not when i do IP/list. I get
BAD ARGS
This seems to come from the function printDirectory(). What does server.hasArg() do?

liminal18 wrote:catalex sd card reader.
Any idea what I'm doing wrong? Using female to female connectors was using a breadbard before.

I spent 1 day with the same problem .
Catalex is for 5V arduino, not for 3,3V ESP. You can see on card reader board convertor Ucc 5V to 3,3V and signal convertor (circuit with a lot of pins). If You use for example SD card reader, which is on back LCD TFT, it works. In this case You can see on card reader only 3 resistors. Dont forget connect power (3,3V) to LCD TFT display board.

Gentlemen,

I have a question regarding the wiring.

I have connected the SD card to ESP8266 as per instruction, do I need to use any type of resistors ? My memory card is getting very hot when I turn on the ESP and I have to immediately remove it. I checked the wiring multiple times.

I purchased one of the memory card shield and connect to my ESP, was working well:

http://www.ebay.ca/itm/Micro-SD-Storage ... SwT6pVxW71

I also had experience getting hot with this module but once per 10 times. any thought ?

Thanks
Navid