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34 Threads found on Sd Card Circuit
I see that you drew the circuit diagram with Proteus, if you want it to simulate you need to connect the ground symbol to the ground of the voltage regulator and SD card. To work in practice you need input and output capacitors on the 3.3V regulator without them the regulator will oscillate.
hello, I tested successfully Petite FatFs , with 18F46k22 Hardware is a 2Go SDcard formateed in 512 bytes sectors FAT32 File name less than 12 chars ex: NAME0001.TXT Storage to SDcard need to fill first a buffer of 512 bytes .. Files management is OK. google with Petite Fatfs and
Hello, i am implementing a simple wav player that play samples that are saved on SD card. i am using r2r 8bit DAC as problem is i get a trash sounds instead of a music. definitely i check the r2r circuit and working correctly. but i am confuse why i got a trash sounds? i actually check the output using serial communication and i
For the project I'm working on we have a student sprite that can wonder through 5 rooms and is controlled with the Keys. Oh, we're also trying to make the music be triggered based of the x and y position of the sprite (which will be tricky in itself) Can you give some details about the "sprite"? [SIZE
You can use microSD through a passive adaptor which should clarify that it uses the same circuit. 8GB is SDHC type and uses a different address format in read and write commands. If your SDcard library is already aware of SDHC cards, it should work.
I am looking for a pcb to incorporate low cost mini pinhole digital camera (not cctv), with image storage capability (i.e. sd card) and linked to a pir to trigger the camera, with refresh rate around 3-5 seconds. pir's on ebay, but struggling with the rest. help pls
Thank you very much Peter.... Is it possible to use SD card together with ISP ? because I saw in circuit it shares the same pin... SCK / PB1....
Hi, I am having trouble getting MMC initialised using mmc_fat_init() function. Initialisation fails due to an unknown reason. I tried simulating it in Proteus and used LEDs to check if MMC is getting initialised. I am attaching the program config settings and ISIS file. Actually I have edited the library example to include LEDs for debugging
Hi every body several month ago I tried to read and write in a SD card memory, finally I could write and read in the SD card memory till capacity 2G but my circuit don't support SD cards with capacity more than 2G!,look below link now I
I would think power supply issues like ripples, noises or oscillations are the first thing one would check if the circuit is behaving intermittently. When you send CMD0 command to place the SD card into SPI mode, you have to make sure it is placed in that mode by checking for the 0x01 response. At end of each command, dis-select SD card (...)
You can find a lot using google Here is one for example
This is very very nice, is there some nice circuit for holter and ECG (6ch and up, 12ch will be excellent) with SD card logging ?
Original link of this project is located here, also there is complete explanation and needed info : This circuit what you post uses microsd module ExtremeElextronics which have voltage regulation on 3,3V for SD card. On the same site you have complete explanation how
Hi i want to drive an IC for reading and writing from/to MMC or SD card. my IC is GL827L, i could find its datasheets but i can't find any tested circuit or schematic for it, can any one help me to can drive it correct? i attached datasheets too.
I would consist on: - 5 to 3.3V voltage divider or driver ICs instead of shorting the outputs of a 5V provessor with a 3.3V Z-diode - 3.3 to 5V level translator for DO - pullup resistors for unconnected SD card signal pins - in case your software has difficulties to distinguish a floating DO signal from a reasonable card output, a pullup on DO
Hallow everyone! I want to make a circuit that captures photo form webcam and saves it in to a sd card after about five minute interval. I'm using the 18f8722 and max3421 chip. I can write data to sd card but the problem is that i don't know nothing about OTG. How to initialize the webcam and how to get the raw data form it ? I (...)
I want circuit schematic for interfacing micro sd card with pic18f4550 using MSD class provided in AN1003 document. Can anybody provide the circuit diagram? Thanks Regards: Sailesh
I have coding of hid+msd device with pic18f4550 but I don't have circuit schematic to interface micro sd card. I want circuit schematic. I am uploading the code. I have searched google but not found any solution. Can anybody help me? Thanks Sailesh64322
Dont use yellow color .. its not readable... which controller and do you need sd card or MMC card...
hi i am working on project in which i have to used micro sd card for both for mobile and microcontroller ,but one at a time ,my project is to get data from serial port and then write to sd card and then want to used this card for mobile tooo without pluging from the circuit and then insert to mobile plz help
I am interfacing my micro sd card with the above circuit diagram(in the attachment file). I am initializing my sd card with the following sample code, i am displaying the response in my lcd. According to the code i am expecting blank display where as it shows one. which means it is not initialized or card is not accepted. (...)
Hello! can i connect a PIC16F877A to MMC? I am using HIGH TECH C compiler. Could u help me.... I have never used a PIC. However, if I had to, I would verify that: - The supply power is compatible; - It has a SPI bus or at least 4 unused GPIO pins to emulate SPI. Then MMC or SD will connect without any trouble. Dora.
hi any body send me a footprint for sd card in orcad layout. i attached sd card circuit. plz send me immediately
My requirement are: 1. Volts: 4.2, Max current 2A, for SIM300, GPS-M90, some relays and other circuitry 2. Volts: 3.3, for SD Memory card, current consumption is minimum circuit will take power from Car battery (12V), I need another backup battery in case of main battery cutoff, circuit will automatically switch to (...)
You can interface SD card with PIC controller on SPI line. And dont be lazy, search for it, How can you directly ask for code.?? After using SPI communication, if you have any problem then post a topic.
am working on a solar data logger. the circuit reads the sun's intensity and records it on an sd-memory card. i live in Nigeria and the sun's intensity is very high during this season. i have three challenges 1) the sensor to use and how to interface it with PIC16f877a 2) how to log the data to the card 3) i how i can retrieve the data (...)
hello friends. I want make a MMC card R/W board and have a SD card socket but don't know what pins must be blank (I know that MMC have 7 pin and SD vave 9 pin). I wired the socket and take a picture from it and attached please see that and help me to resolve the problem. (I written the black texts on picture to explain my circuit if the pin (...)
Sd cards sound easy but have yet to find a simple proven circuit cards work on +3.3V supply. If the PIC also runs on +3.3V, then the circuit is just SPI with pull-ups. ...and software to do card file system for CCS compiler - . Worked from the 1st time
I am designing the SD card controller IC. which type pad should I select to connect with SD card? SD card's IO is push pull circuit. How can I select controller IC pad's drive capacity? About how many ma pad should I select? Thx
A similar project as occurred to me and its on my TO-DO list someday. I bought a bunch of 128MB MicroSD cards that came with an adapter to full-size SD. I figure that I can solder the adapter right into the circuit and use it as a socket for the MicroSDs. Most of these cards can be accessed in single bit SPI mode. (However, the high (...)
Take a look at microchip's application note on mass storage They implemented an sd card reader using a PIC18F4550. Based on this appnote and the ATA specifications you can build yourself a nice usb connected hdd. For the hdd connection you'l
Is it possible to emulate a memory device of one type using a memory device of other type and some circuit. example: is it possible to design a circuit which behaves as a memory stick but actually the data in stored in a SD card or in other words interface conversion. Thx in advance.
I dont know if you want to use a ready made file system than using this long code. If you do then Petit FAT file system is a good option usage : the example reads 512 bytes from a sector and dumps it to hyper terminal. Ive used
I´ve only got strange responses from SD/MMC when I missed a certain step. Can you describe the exact sequence you are using to issue a CMD24 and perform the write?