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  1. Thread: Bat detector

    by remis
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    37,155

    Hello Corbee. It is a good idea to test many...

    Hello Corbee.
    It is a good idea to test many configuration with this minimal hardware setup : no preamp, no filter, ( only 100nF) , tun on, off. The only issue could be the small lenght of open wire...
  2. Thread: Bat detector

    by remis
    Replies
    527
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    37,155

    Yes your are right! I forgot the simplest way.......

    Yes your are right! I forgot the simplest way....
    I suggest to start with typical audio spectrum, close to typical application( 3Khz signal with SR=44Khz ) to try understanding and confirm the...
  3. Thread: Bat detector

    by remis
    Replies
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    37,155

    Ok i understand. Other intermédiate solution...

    Ok i understand.
    Other intermédiate solution could be : compile an oscilloscope :Use the bat detector as a simple oscilloscope to check the fullscale, and the level and the signal seen by the ADC....
  4. Thread: Bat detector

    by remis
    Replies
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    37,155

    Hello Corbee, Interresting Test.Could-you add...

    Hello Corbee,
    Interresting Test.Could-you add more reference about the generator*?

    I think you have too much sub-systems in your test-setup. The first step is the conducted test with a well...
  5. Thread: Bat detector

    by remis
    Replies
    527
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    37,155

    decoupling

    To add detail message #316:
    I improve decoupling with 470nF 0805 ( or 0603 ) : They are soldered directly beetwen supply pin and groud. It could be the next pin, (if pin is gnd) or i use the...
  6. Thread: Bat detector

    by remis
    Replies
    527
    Views
    37,155

    Hi Corbee, I don't have any date for the manual. ...

    Hi Corbee, I don't have any date for the manual. Your are spending a lot of time on software. I can work on this document. I just need more information. You can read first draft manual in #371, if...
  7. Thread: Bat detector

    by remis
    Replies
    527
    Views
    37,155

    Short Manual and explanations

    I plan to offer one box to a friend*: Thus I need a short manual. Please use doc 2003 win version or same in Libre office under Linux:easier to modify for every body if you want to add your...
  8. Thread: Bat detector

    by remis
    Replies
    527
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    37,155

    If VCC/2 is perfect : low impedance point DC...

    If VCC/2 is perfect : low impedance point DC value but no AC signal . Two solutions:
    _reduce R6, R5 to small impedance, comparred to R2 and increas C6. Ok but this solution will increase the DC...
  9. Thread: Bat detector

    by remis
    Replies
    527
    Views
    37,155

    Hello Don't mix the issues. Did you have any...

    Hello

    Don't mix the issues. Did you have any osciloscope? I suggest you to check your Dc bias around TRamplifier without any signal, without AOP. like in message #317
    HArmonics could also be the...
  10. Thread: Bat detector

    by remis
    Replies
    527
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    37,155

    yes it works with : Turn RL until...

    yes it works with :

    Turn RL until Press_Default.
    Press RL : switch from yellow to white
    Turn RL to select Press_User
    Press RL ; switch from white to yellow

    dont change param ; keep defaut...
  11. Thread: Bat detector

    by remis
    Replies
    527
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    37,155

    how to strore parameters

    I'm sorry I need to detail .I miss something. Please insert correction.
    Regards
    Rémis

    PowerON

    Turn RotaryLeft until TE_low
    PressRL : T_Low switch from yellow to white
    Turn RL : Topdisplay...
  12. Thread: Bat detector

    by remis
    Replies
    527
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    37,155

    storing in EEPROM

    Hi Corbee,
    Your explanation seems to be clear, but I 'm not able to save the parameters : I miss sometihings, they are not stored.
    during startup EEPROM is always 0000h

    Rémis
  13. Thread: Bat detector

    by remis
    Replies
    527
    Views
    37,155

    Hi, Thanks corbee for your last code version. I...

    Hi,
    Thanks corbee for your last code version. I can not compile it, but I can download the hex file. I really appreciate the TE low value définition : we can exclude mic noise,audio earable noise...
  14. Thread: Bat detector

    by remis
    Replies
    527
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    37,155

    hi mic for ultrasonic is like farnell ref...

    hi
    mic for ultrasonic is like farnell ref 1007349. I use it 30 years ago for my first HT analog receiver. it it is a passiv device. no spurious. Edwin : your test is very interesting. It could be...
  15. Thread: Bat detector

    by remis
    Replies
    527
    Views
    37,155

    I use the one transistor amplifier in the...

    I use the one transistor amplifier in the modified schematic from Edwin. ( see my previous amplifer measurement simulation and description). The TFT is operating: One picture show the noise floor :...
  16. Thread: Bat detector

    by remis
    Replies
    527
    Views
    37,155

    ICS40730 spurious confirmed

    Hello. I confirm what I saw in my message 239: Today with ''new'' parts. ICS40730, ICS4720 have some spurious signal in opposite phase at 27Khz, 10mVpp. It wil be canceled with diff AOP. I add also...
  17. Thread: Bat detector

    by remis
    Replies
    527
    Views
    37,155

    Hi Cor Simply restore the state, same as it was...

    Hi Cor
    Simply restore the state, same as it was just before last power on (mode , SR value , center frequency, spectrum view, gain, volume) , will be a great improvement. Or may be with specifi menu...
  18. Thread: Bat detector

    by remis
    Replies
    527
    Views
    37,155

    Hi, I'm using LTC spice for many year . You are...

    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...
  19. Thread: Bat detector

    by remis
    Replies
    527
    Views
    37,155

    you can add common mode noise source in serie...

    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...
  20. Thread: Bat detector

    by remis
    Replies
    527
    Views
    37,155

    AOP for mic

    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.
  21. Thread: Bat detector

    by remis
    Replies
    527
    Views
    37,155

    amplifier input check

    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...
  22. Thread: Bat detector

    by remis
    Replies
    527
    Views
    37,155

    Schematic supply chek and decoupling

    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...
  23. Thread: Bat detector

    by remis
    Replies
    527
    Views
    37,155

    HEllo I confirm the good result with Pe1pwf ...

    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
    ...
  24. Thread: Bat detector

    by remis
    Replies
    527
    Views
    37,155

    Thanks Corbee for you support at every time... ...

    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...
  25. Thread: Bat detector

    by remis
    Replies
    527
    Views
    37,155

    I use in sd_config.h #define USE_MSC 0 ; I add...

    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...
  26. Thread: Bat detector

    by remis
    Replies
    527
    Views
    37,155

    First Many thanks to all for your hard work. It...

    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:...
  27. Thread: Bat detector

    by remis
    Replies
    527
    Views
    37,155

    Many thanks for your help....I dont have old sd...

    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...
  28. Thread: Bat detector

    by remis
    Replies
    527
    Views
    37,155

    SD card

    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...
  29. Thread: Bat detector

    by remis
    Replies
    527
    Views
    37,155

    I understand that recording data required some...

    I understand that recording data required some processing. Thus what parameters did you recommend before record?
  30. Thread: Bat detector

    by remis
    Replies
    527
    Views
    37,155

    Hello Corbee Ok for toshiba Exceria 16Gb. I...

    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...
  31. Thread: Bat detector

    by remis
    Replies
    527
    Views
    37,155

    Bat detector and Arduino

    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...
  32. Thread: Bat detector

    by remis
    Replies
    527
    Views
    37,155

    ICS40730 spurious

    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...
  33. Thread: Bat detector

    by remis
    Replies
    527
    Views
    37,155

    Hello. My picture is not detailed: I use 2 wire...

    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...
  34. Thread: Bat detector

    by remis
    Replies
    527
    Views
    37,155

    ICS40730 spurious

    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...
  35. Thread: Bat detector

    by remis
    Replies
    527
    Views
    37,155

    Hello Thank*‘s I found it*! Now I’m trying to...

    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...
  36. Thread: Bat detector

    by remis
    Replies
    527
    Views
    37,155

    Hello After few days of work I confirm that it's...

    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...
  37. Thread: Bat detector

    by remis
    Replies
    527
    Views
    37,155

    Hello Corbee. Many thanks to try to help witj...

    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...
  38. Thread: Bat detector

    by remis
    Replies
    527
    Views
    37,155

    Hi We have the same Idea. the first code of this...

    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...
  39. Thread: Bat detector

    by remis
    Replies
    527
    Views
    37,155

    Hi, Yes we are agree : it could be very...

    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 :...
  40. Thread: Bat detector

    by remis
    Replies
    527
    Views
    37,155

    Hello I'm new on this project. I follow work of...

    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...
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