Forum Rule: Always post complete source code & details to reproduce any issue!
Tab Content
  • iammb's Avatar
    09-14-2019, 05:56 AM
    Hi, I am using Serial1 at higher baud rates(921600 and 3000000), i want to know how reliable is Serial1.read() at lower core clock. Usually i set teensy3.5/3.6 core clock to 120Mhz but if i set core clock to 48Mhz for...
    0 replies | 27 view(s)
  • iammb's Avatar
    09-14-2019, 05:45 AM
    I tried creating new directory every hour and also tried with creating directory every day, but it's still having time gaps.
    4 replies | 82 view(s)
  • iammb's Avatar
    09-07-2019, 07:17 PM
    Yes,i format SD cards before using them. I have tried with both FAT32 and exfat, same issue with both. When i keep device recording for long duration's, i see these 11 sec time gaps (10sec wavfile) keep coming after...
    4 replies | 82 view(s)
  • iammb's Avatar
    09-07-2019, 06:54 PM
    Hi, I am trying to make a continuous recording device using Teensy3.5/3.6 and SPH0645 I2S mems microphone from adafruit. As per suggestions i got from this forum, i referred micro sound recorder and bat-detector...
    4 replies | 82 view(s)
  • iammb's Avatar
    09-03-2019, 11:35 AM
    Hi, As advised by WMXZ, i referred microSoundRecorder and bat detector and included sdfs library in my project. Sdfs performance if way better than SD.h. Earlier i was having issue of timestamp gap of 11,12 or even 15...
    9 replies | 212 view(s)
  • iammb's Avatar
    08-06-2019, 05:29 AM
    iammb replied to a thread Audio transmitter in Project Guidance
    For transmission of wav file via gsm, first i have to write file to EFS(Encrypted file system) of gsm and then issue AT command to upload file. If i use low baud rate eg:115200, the data transfer takes so much time. For...
    8 replies | 262 view(s)
  • iammb's Avatar
    08-05-2019, 10:40 AM
    iammb replied to a thread Audio transmitter in Project Guidance
    Biggest incoming string coming from GSM is around 50-60 characters. I am using Serial1 at 921600 baud rate and core clock is set to 120Mhz. Code below is part of working code which records wav file and uploads it to...
    8 replies | 262 view(s)
  • iammb's Avatar
    08-05-2019, 09:43 AM
    iammb replied to a thread Audio transmitter in Project Guidance
    I want the device to record continuously and whatever time is left between waiting for queue to fill with audio data and writing samples to sd card, i want to send AT commands over UART.
    8 replies | 262 view(s)
  • iammb's Avatar
    07-28-2019, 06:02 PM
    Hi, I am working on a project where i want to upload audio files(.wav) to server using GSM. Device should record 10 sec audio files continuously but when controller is free(between writing samples to SD card) it should...
    8 replies | 262 view(s)
  • iammb's Avatar
    07-24-2019, 10:36 AM
    I read this post : https://forum.pjrc.com/threads/34327-Audio-library-and-SdFat-Library . If sdfat is faster than sd library, how to use it with audio library?
    9 replies | 212 view(s)
  • iammb's Avatar
    07-24-2019, 06:02 AM
    I searched on the forum and i came to know that SD fat library doesn't work with Audio library. So is there any other way to minimize these delay?
    9 replies | 212 view(s)
  • iammb's Avatar
    07-23-2019, 10:23 AM
    Hi, I am making a audio recorder with teensy3.5 and 3.6 using SPH0645 mems i2s mic from adafruit. I want the device to record 10sec audio continuously till the battery last(I am using 3.7v 2000mah lipo battery to...
    9 replies | 212 view(s)
No More Results
About iammb

Basic Information

Statistics


Total Posts
Total Posts
12
Posts Per Day
0.21
Last Post
UART error rate at higher baud rate 09-14-2019 05:56 AM
General Information
Last Activity
Today 12:07 PM
Join Date
07-23-2019