Continue to Site

Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.

Recent content by Sm.r.Tadayoni

  1. S

    FATFS Read file Problem

    Hi My Friend I did and this is the log result : [10/14-07:59:13] TRACK : NEXT | REPEAT [10/14-07:59:47] MP3 TIMER : 68146 [ms] [10/14-07:59:47] CNT : 1409 [10/14-07:59:47] TRACK : NEXT | REPEAT [10/14-08:00:21] MP3 TIMER : 68513 [ms] [10/14-08:00:22] CNT : 1410 [10/14-08:00:22] TRACK : NEXT |...
  2. S

    FATFS Read file Problem

    :) Hi my friends. I've written a code to play a song file for long time on repeat mode. Normally this code work correctly without any problem but for a short time. After for example 500 repeated, the sound goes to choppy mode, but when i change the player to other song, the other song will play...
  3. S

    Ethernet Controller Or MicroController built-in Ethernet

    :) Hi My Friends. I wanna to know that, what is difference between Ethernet Controller and MicroController with built-in Ethernet. And also which one is better with the same features... Thanks Alot...
  4. S

    [SOLVED] Hum noise on LM386 output

    :) Thanks for your replies. The problem solved with your help. I used battery charger. This charger is poor but i used some filter to regulate it. I didn't use this bypass capacitor. When i used it the noise reduced in large scale. :) Thank you alot...
  5. S

    [SOLVED] Hum noise on LM386 output

    :) Hi My Friends... I have a circuit with LM386 Amplifier to amp the signal of VS1003 Left and Right channels. The question is, when i put the headphone cable (example iPhone 4) to the output stage, i dont hear any noise, but when i use another headphone (iPhone 5S) i hear noise of...
  6. S

    MP3 Player with internal DAC

    as you said, i've checked again and this is what i see in oscop : Sin wave : Input : Ch1 = blue, Output : Ch2 = yellow before setting Speaker : after setting speaker : my amplifier is LM386 with this schem : in my board i removed the Gain capacitor. so is it correct output? does the...
  7. S

    MP3 Player with internal DAC

    My Variables are : uint8_t readBufAddress[8196] __attribute__((at((uint32_t) 0x20000800))); #define READBUF_BASEADDR &readBufAddress #define READBUF_SIZE_USB (1024*8) #define READBUF_SIZE_SD (1024*8) #define AUDIOBUF_BASEADDR ((uint32_t) (0x2000A020)) #define AUDIOBUF_SIZE...
  8. S

    MP3 Player with internal DAC

    Thanks for your reply, I've checked it and i can hear pure whistle sound. Also i have checked my DAC with demo wave sound (16000Hz mono) and it was pretty good. But mp3 player has noisy sound.
  9. S

    MP3 Player with internal DAC

    Hello my Friends... :) I wanna to create a MP3 Player with ARM - STM32F103RE and internal DAC. As you know this micro controller has 2 DAC that can produce sound in stereo mode in 72MHz core clock. So i choose it for my project. As i said, i choosed this mcu and i wrote a program for decoding...
  10. S

    Problem with running a xlcd display code on dsPIC30F4011

    Hi Every body. :) I have a problem to Run(Display Character on LCD) my Code of xlcd (2x16) on dsPIC30f4011. i think my delay time is wrong but i dont know what is the Correct. can Somebody help me ? My Code: ______________________________________________________________ #include <p30f4011.h>...
  11. S

    Op amp in Comparetor Mode.

    Thanks. No it was just Question. i started to Design cicuits that i needed to know about this device. :) .
  12. S

    Op amp in Comparetor Mode.

    Hi. thanks alot. yes its helpful. i have a question again, are there some devices to compare signal ? digital or analog , both. Thanks. :)
  13. S

    Op amp in Comparetor Mode.

    Hi Everybody. can some body help me to undersntand about Opmap in Comparator mode that how is it work and often where we use it.? i really need to know this. thanks alot. :)
  14. S

    About A/D Module in PIC18F458

    thanks about your help, i found out my problem and solve it, i have a oscilloscope and it was not Calibration then it made me Wrong signal and wrong Voltage (Average Voltage).
  15. S

    About A/D Module in PIC18F458

    hi every body. i have a problem about Analog to digital Processing in PIC18f458. when i want to convert , the result is wrong, and its not work true. this is my Code : void set_registers(void) { // *********************** A/D Module ************** ADCON0bits.ADON = 1; // AD ON...

Part and Inventory Search

Back
Top