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  • pe1pwf's Avatar
    05-28-2021, 04:10 PM
    pe1pwf replied to a thread Bat detector in Audio Projects
    The workaround could be compiling the code to enable a long autorecord time. Set up autorecord with an extremely low record threshold (Signal strength above 25) so it will be activated all the time. Activating...
    876 replies | 106903 view(s)
  • pe1pwf's Avatar
    05-23-2021, 07:31 AM
    pe1pwf replied to a thread Bat detector in Audio Projects
    I do not experience display noise, the micropohone is more sensitive on 23kHz and I know I do see that. Specially in (near) silent recordings the spectrum preview upon playing shows all the collected noise, there is not...
    876 replies | 106903 view(s)
  • pe1pwf's Avatar
    05-17-2021, 06:33 PM
    pe1pwf replied to a thread Bat detector in Audio Projects
    Hi Diane, There are no gerber files publicly available. I do share boards + microphone PCB's via a big US based international marketplace. Or you could try contacting me directly. I know you will get 5 pcb's from...
    876 replies | 106903 view(s)
  • pe1pwf's Avatar
    05-15-2021, 09:18 PM
    pe1pwf replied to a thread Bat detector in Audio Projects
    Must be an older (2018) version pcb 2019 or later have the display board 15/1000 of a mm off center a distance I think nobody would notice. The offset on the 2018 boards was just a beginners mistake.
    876 replies | 106903 view(s)
  • pe1pwf's Avatar
    05-15-2021, 08:31 PM
    pe1pwf replied to a thread Bat detector in Audio Projects
    I'm not sure if you are referring to the 0.015mm offset here. The misalignment of the display stuck to the red PCB probably is bigger than this 0.015 mm or maybe there is an error in the library file. I did my...
    876 replies | 106903 view(s)
  • pe1pwf's Avatar
    05-15-2021, 05:14 PM
    pe1pwf replied to a thread Bat detector in Audio Projects
    It looks like the hight of screw bushings inside the enclosures have just about the right hight for using a rectangular PCB without the cut-outs. It is a bit more tricky to mount, but if you do do not like the looks of...
    876 replies | 106903 view(s)
  • pe1pwf's Avatar
    04-28-2021, 06:44 PM
    pe1pwf replied to a thread Bat detector in Audio Projects
    That probably is because the detector switches HT or AHT mode in autorecord. HT or AHT has no mute and is always running. TE is muting until something is heard and than playing back and falling back to mute...
    876 replies | 106903 view(s)
  • pe1pwf's Avatar
    04-24-2021, 04:24 PM
    pe1pwf replied to a thread Bat detector in Audio Projects
    Helge, nice to read about the added GPS and temperature sensor. I have not seen anyone else using the GPS. It is a big current consumer but it can help you to know where the recording was taken. The temperature...
    876 replies | 106903 view(s)
  • pe1pwf's Avatar
    04-13-2021, 11:11 AM
    pe1pwf replied to a thread Bat detector in Audio Projects
    These resistors are not in the way and do not consume any significant current These conet to the data lines of the micro SD card socket on the audio board. I simply put a resistor in every data line connecting to the...
    876 replies | 106903 view(s)
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About pe1pwf

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About pe1pwf
Location:
Netherlands
Interests:
Ham radio / electronics
Occupation:
Mechanical and electrical service tecnician

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Bat detector 05-28-2021 04:10 PM
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11-11-2018