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  • remis's Avatar
    Today, 08:45 AM
    remis replied to a thread Bat detector in Audio Projects
    Hi, I'm using LTC spice for many year . You are right :"There is always a difference between the simulation and reality" But LTC spice use model used during the design of IC. ( should be different for analog device, or...
    331 replies | 28406 view(s)
  • remis's Avatar
    Yesterday, 09:05 PM
    remis replied to a thread Bat detector in Audio Projects
    you can add common mode noise source in serie with 05vcc, left on R11 and R12. all parts left C2 and C3 simulate Mic differential signal: for better accuracy we need to add 750 ohm output mems impedance ( read...
    331 replies | 28406 view(s)
  • remis's Avatar
    Yesterday, 04:00 PM
    remis replied to a thread Bat detector in Audio Projects
    Hi, See attached schematic LTC file for ADA4807 AOP,used in differential mode: Low noise, available at farnel and others. Simulation OK. I plan tu use it to remove common-mode noise on MIC output.
    331 replies | 28406 view(s)
  • remis's Avatar
    07-05-2019, 05:33 PM
    remis replied to a thread Bat detector in Audio Projects
    Hello I check also the NPN amplifier with BC847C. Less gain to begin, and not saturate. I performed simulation and measurements wich are compliants. I suppose a typical 50mVpp input signal to start the analysis. I...
    331 replies | 28406 view(s)
  • remis's Avatar
    07-05-2019, 04:22 PM
    remis replied to a thread Bat detector in Audio Projects
    HEllo Many thanks to Edwin for this document and associated work: https://drive.google.com/file/d/1Uu2kTnleLcJJ1JrEzeiRPV7JJSGXqBRW/view I start from this schematic page 8. I check the power supply and decoupling...
    331 replies | 28406 view(s)
  • remis's Avatar
    07-02-2019, 11:23 AM
    remis replied to a thread Bat detector in Audio Projects
    HEllo I confirm the good result with Pe1pwf work: Windows, Arduino 1.8.7, Teensyduino 1.46 codes and libraries here: https://drive.google.com/file/d/11BgRDCXH6Un10M2vmeA1CUw1kpG-siBx/view I copie Librarie (...
    331 replies | 28406 view(s)
  • remis's Avatar
    06-25-2019, 07:56 PM
    remis replied to a thread Bat detector in Audio Projects
    Thanks Corbee for you support at every time... Now I confirm result with ...0.84pwf.hex and your parameters for audacity importation. I try at 192 Khz. I am able to here the drift in ultrasonic range ( generator...
    331 replies | 28406 view(s)
  • remis's Avatar
    06-25-2019, 06:03 PM
    remis replied to a thread Bat detector in Audio Projects
    I use in sd_config.h #define USE_MSC 0 ; I add #define BUILTIN_SDCARD in 0.86 main.cpp and #define HAVETM ligne 166 Compilation error remain : 'FRESULT' has not been declared for every call. I search again. I...
    331 replies | 28406 view(s)
  • remis's Avatar
    06-25-2019, 08:21 AM
    remis replied to a thread Bat detector in Audio Projects
    First Many thanks to all for your hard work. It is not totaly clear for a newbie like me. I will try you hex file after work. I try to summarize your modification, for arduino user under linux: first , keep your new...
    331 replies | 28406 view(s)
  • remis's Avatar
    06-21-2019, 10:16 PM
    remis replied to a thread Bat detector in Audio Projects
    Many thanks for your help....I dont have old sd micro. I continu with my SD HC in fat32. I download corberjune.ino.hex with old tools teensy duino : it works : I can see the message of Sd recording, Button stop work....
    331 replies | 28406 view(s)
  • remis's Avatar
    06-20-2019, 09:09 PM
    remis replied to a thread Bat detector in Audio Projects
    Ok, thanks for details. To lowering processing issue I force Sample rate at 8Khz, in PASS mode : But I try and writing freeze..even with SDhc not low cost. I could be an issue with the code modification... Some...
    331 replies | 28406 view(s)
  • remis's Avatar
    06-20-2019, 01:19 PM
    remis replied to a thread Bat detector in Audio Projects
    I understand that recording data required some processing. Thus what parameters did you recommend before record?
    331 replies | 28406 view(s)
  • remis's Avatar
    06-20-2019, 11:58 AM
    remis replied to a thread Bat detector in Audio Projects
    Hello Corbee Ok for toshiba Exceria 16Gb. I will try in AUTO_TE mode, with SR=44Khz. If not ok I need to work more on my code modification ( rename sdhc_isr.cpp in sSDFS/stdio.c to compile under arduino) Regards.
    331 replies | 28406 view(s)
  • remis's Avatar
    06-19-2019, 09:10 PM
    remis replied to a thread Bat detector in Audio Projects
    Hi, You are lucky. I begann this project with arduino 1.8.9 two weeks ago. Please read all my post. You will be able to compile under arduino and teensee. Follow the special modifications in library describes here by...
    331 replies | 28406 view(s)
  • remis's Avatar
    06-19-2019, 11:21 AM
    remis replied to a thread Bat detector in Audio Projects
    First, thanks to spend some time on this so obvious issue… “How would you explain that we use the ICS40730 in many devices with great sucess and in your setup the output is not clean?” Very good question. My issue is...
    331 replies | 28406 view(s)
  • remis's Avatar
    06-19-2019, 07:08 AM
    remis replied to a thread Bat detector in Audio Projects
    Hello. My picture is not detailed: I use 2 wire for two outputs. I let the unused output open. I confirm my diagnosis , even with battery ( 2 cells ) , also in Bat detector with FFT Thus no issue with my power supply...
    331 replies | 28406 view(s)
  • remis's Avatar
    06-18-2019, 08:13 AM
    remis replied to a thread Bat detector in Audio Projects
    Hello Is there any body who look ICS40730 output? First I use home made solution to solders the mic. I use flip chip solution: not very difficult. I add 470nF decoupling capacitor for VCC. Next pictures are output...
    331 replies | 28406 view(s)
  • remis's Avatar
    06-17-2019, 08:23 AM
    remis replied to a thread Bat detector in Audio Projects
    Hello Thank*‘s I found it*! Now I’m trying to record some file. I can start it. I cannot stop it with button. After so many test, what is the best setup for register file on SD? May-be the SD must be in FAT32, an...
    331 replies | 28406 view(s)
  • remis's Avatar
    06-15-2019, 06:53 PM
    remis replied to a thread Bat detector in Audio Projects
    Hello After few days of work I confirm that it's work with modification on SDHC_ISR function name see #231 It compile and I'm now able to see some spectrum on TFT. I'm beginning test with generator. I have some chech...
    331 replies | 28406 view(s)
  • remis's Avatar
    06-09-2019, 09:47 PM
    remis replied to a thread Bat detector in Audio Projects
    Hello Corbee. Many thanks to try to help witj your fast answer. it is not ok : the compiling #ifdef is not solving the initial issue : one function in two library. Your modified code still use #include <SD.h> follow...
    331 replies | 28406 view(s)
  • remis's Avatar
    06-07-2019, 06:41 PM
    remis replied to a thread Bat detector in Audio Projects
    Hi We have the same Idea. the first code of this topic compile OK I try with first "big" version of DD4WH https://github.com/DD4WH/Teensy-Bat-Detector...
    331 replies | 28406 view(s)
  • remis's Avatar
    06-07-2019, 08:18 AM
    remis replied to a thread Bat detector in Audio Projects
    Hi, Yes we are agree : it could be very difficult to solve this kind of issue with so different environnements. I use #define USESD1 wich imply USEDSD in your code. Same issue :...
    331 replies | 28406 view(s)
  • remis's Avatar
    06-07-2019, 07:17 AM
    remis replied to a thread Bat detector in Audio Projects
    Hello I'm new on this project. I follow work of DD4WH and Corber project. I try to compile under arduino 1.8.9 and teensyduino available for 1.8.9. I hope it could help people if I detailed my issue, and may be...
    331 replies | 28406 view(s)
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About remis

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About remis
Location:
France
Interests:
radio, signal
Occupation:
RF Engenieer

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