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  • CorBee's Avatar
    Today, 05:35 PM
    OK. Than proceed as suggested, first make sure the data leaving the TX is what you want. Serial will tell you that, and make sure it sends out data at a regular interval (not to short). If that works OK, switch to RX...
    22 replies | 150 view(s)
  • CorBee's Avatar
    Today, 05:24 PM
    Oh I now only get the point of your message ... you are not even sending/receiving real data yet ... You cant test anything without the proper hardware !
    22 replies | 150 view(s)
  • CorBee's Avatar
    Today, 05:01 PM
    Should be easy to find out. Just make your TX send every 10 seconds or so and check if you get incoming data every 10 seconds also. If you get a regular signal coming in that is most likely due to TX and RX...
    22 replies | 150 view(s)
  • CorBee's Avatar
    Today, 04:43 PM
    The & and size are logical, you send the data of a variable and the receiver needs to know how many bytes should be send (depending on the type of variable) from https://forum.arduino.cc/index.php?topic=421081...
    22 replies | 150 view(s)
  • CorBee's Avatar
    Today, 04:09 PM
    WOuld be got to be sure about what the TX has send also, if TX sends something wrong RX cant correct that. What happens if you dont try to send the data as a float but as a string (I saw you had commented that out in...
    22 replies | 150 view(s)
  • CorBee's Avatar
    Today, 04:01 PM
    And what does the serial on the TX and RX show ?
    22 replies | 150 view(s)
  • CorBee's Avatar
    Today, 03:47 PM
    No problem, this if often the only way to inspect code and see where things might go wrong. Cor
    22 replies | 150 view(s)
  • CorBee's Avatar
    Today, 03:43 PM
    Share your code
    22 replies | 150 view(s)
  • CorBee's Avatar
    Today, 03:34 PM
    Hi, NaN stands for " Not a number " and could be that there is something in the format of the data you are receiving ("." or "," as decimal separator for instance). Try printing the data not as a number but as a...
    22 replies | 150 view(s)
  • CorBee's Avatar
    Yesterday, 06:16 PM
    CorBee replied to a thread Bat detector in Audio Projects
    Hi, Edwin reported this morning that the code to prevent the counter resetting to 0 during autorecord has worked. Some more testing will be done and after that I will probably update the code and hex. regards Cor
    651 replies | 60632 view(s)
  • CorBee's Avatar
    09-20-2020, 01:20 PM
    Hi, I have >10 running at the moment. I combined the MSP430 and the NRF24L01 on a small perfboard and the DS18B20 is on the same perfboard. I got MSP430G2553 chips from a time that TI was more or less giving them...
    22 replies | 150 view(s)
  • CorBee's Avatar
    09-20-2020, 12:14 PM
    Hi, One of the easiest ways to achieve this is to use NRF24L01 RF transceivers. There's loads of code out there that show how to send/receive data with these. For each room you need a temperaturesensor(eg...
    22 replies | 150 view(s)
  • CorBee's Avatar
    09-20-2020, 07:31 AM
    CorBee replied to a thread Bat detector in Audio Projects
    Hi, Edwin has done some good testing and found out that the AUTORECORD is not yet working as planned. This is the case for V1.0 and also for the more recent update. I am currently busy (together with Edwin) to...
    651 replies | 60632 view(s)
  • CorBee's Avatar
    09-19-2020, 08:20 AM
    Hi, In the batdetector project ( https://forum.pjrc.com/threads/38988-Bat-detector ) we use the oscillator function at very high samplerates (up to 352k) without any problems. In the heterodyne mode we mix this...
    11 replies | 208 view(s)
  • CorBee's Avatar
    09-04-2020, 04:03 PM
    CorBee replied to a thread Bat detector in Audio Projects
    Hi, Ive just uploaded a hex where the HiF_bin is not used anymore, this is a direct link https://github.com/CorBer/teensy_batdetector/blob/master/pre_compiled_hex/firmware_DEV20200904.hex regards Cor
    651 replies | 60632 view(s)
  • CorBee's Avatar
    09-03-2020, 03:14 PM
    CorBee replied to a thread Bat detector in Audio Projects
    Instead of changing the HiF_bin (used currently in the detection of ultrasound) its also an option to completely remove the test, the Hif_bin is only used in this line of code of bat_fft.h if...
    651 replies | 60632 view(s)
  • CorBee's Avatar
    09-03-2020, 05:33 AM
    CorBee replied to a thread Bat detector in Audio Projects
    In the startrekversion I chain a heterodyne-mixer after the time-expansion. This allows you to hear the sounds from 0-100000 Khz as a band from -5Khz to 5Khz with the TE_expander on 1/10. Not ideal but fun to do ;)
    651 replies | 60632 view(s)
  • CorBee's Avatar
    09-02-2020, 01:04 PM
    CorBee replied to a thread Bat detector in Audio Projects
    Hi, We could make the HiF_bin simply half the samplerate minus 5Khz or so ? Since I dont think at the top of the range will be as sensitive ? Cor PS: I could also open the startrek version :) With that option you...
    651 replies | 60632 view(s)
  • CorBee's Avatar
    08-29-2020, 10:44 AM
    CorBee replied to a thread Bat detector in Audio Projects
    Hope you like it !
    651 replies | 60632 view(s)
  • CorBee's Avatar
    08-28-2020, 01:27 PM
    CorBee replied to a thread Bat detector in Audio Projects
    The update is available as a hex and its a "trial" version. Everything should work as before but the detector-screens will be different and will show the calls more detailed. Next to that if you want to listen to...
    651 replies | 60632 view(s)
  • CorBee's Avatar
    08-27-2020, 04:05 PM
    CorBee replied to a thread Bat detector in Audio Projects
    Sometimes ... i wished I would hear a bit more bats around my house. Most evenings when I try to test functionality of the batdetector I can hear crickets/grasshoppers and if I am lucky one or two pipistrelle bats....
    651 replies | 60632 view(s)
  • CorBee's Avatar
    08-22-2020, 10:44 AM
    CorBee replied to a thread Bat detector in Audio Projects
    Hi Craig, Never tried that, I dont know what spectra and power a powerline emits. regards Cor
    651 replies | 60632 view(s)
  • CorBee's Avatar
    08-19-2020, 11:54 AM
    CorBee replied to a thread Bat detector in Audio Projects
    Hi Frank, Thanks for the help, I see that this will take considerable time to create. For the moment being I am letting this rest. regards Cor
    651 replies | 60632 view(s)
  • CorBee's Avatar
    08-19-2020, 11:02 AM
    CorBee replied to a thread Bat detector in Audio Projects
    @DD4WH Frank I would like to incorporate the ZoomFFT in the Teensy_batdetector. That way we could look (in more detail) at the more interesting part of the spectrum instead of looking at the full (and sometimes...
    651 replies | 60632 view(s)
  • CorBee's Avatar
    08-16-2020, 01:15 PM
    CorBee replied to a thread Bat detector in Audio Projects
    Hi, I like to hear/see people come up with new ideas, combining two MEMS ... interesting !! Using the ADC ... questions . Just to add my grain of salt ... as I am mainly busy with the software ... If you look into...
    651 replies | 60632 view(s)
  • CorBee's Avatar
    08-16-2020, 05:59 AM
    CorBee replied to a thread Bat detector in Audio Projects
    Hi Ivano, Welcome in this project, I hope you can share your experience with the teensy-batdetector as soon as you have build it. I am especially interested to hear/see how the different microphones, that you...
    651 replies | 60632 view(s)
  • CorBee's Avatar
    08-15-2020, 01:47 PM
    CorBee replied to a thread Bat detector in Audio Projects
    Hi Hendrik, I looked at the Mini-Con-X connectors before but found them way to expensive. regards Cor
    651 replies | 60632 view(s)
  • CorBee's Avatar
    08-15-2020, 01:30 PM
    CorBee replied to a thread Bat detector in Audio Projects
    Hi, I have just uploaded the most recent code for the teensy_batdetector. Its available from https://github.com/CorBer/teensy_batdetector A lot of work during testing of this version in previous months has been...
    651 replies | 60632 view(s)
  • CorBee's Avatar
    08-15-2020, 11:34 AM
    CorBee replied to a thread Bat detector in Audio Projects
    Interesting to see how it performs. I am using plugs on my detectors also, thusfar I have used a GX16 connector but the one that I am currently building I am trying to see if using a 3.5mm stereo-jack works as planned....
    651 replies | 60632 view(s)
  • CorBee's Avatar
    08-15-2020, 05:41 AM
    CorBee replied to a thread Bat detector in Audio Projects
    Hi Hendrik, Thanks for sharing that article, I have seen it before. We are interested to hear from you how good that SMX-US microphone works in the current setup. The article mentions that these Mics are not produced...
    651 replies | 60632 view(s)
  • CorBee's Avatar
    08-07-2020, 05:08 AM
    CorBee replied to a thread Bat detector in Audio Projects
    Hi Hendrik, Nice from you to share the experience ! The PCB from edwin is a great addition to this project as it makes the building so much easier. regards Cor
    651 replies | 60632 view(s)
  • CorBee's Avatar
    08-05-2020, 03:39 PM
    CorBee replied to a thread Bat detector in Audio Projects
    Hi, For those interested, you can download the beta version of the TeensyBatDetector V1.0 from https://github.com/CorBer/teensybat_V1_beta This is NOT yet the finished product so you might encounter issues. Please...
    651 replies | 60632 view(s)
  • CorBee's Avatar
    07-27-2020, 11:37 AM
    CorBee replied to a thread Bat detector in Audio Projects
    Hi, Edwin (THANKS !!) and I are currently working on testing a completely renewed version of the TeensyBatdetector. Several of the requests posted in the forum have found a place in this version (v1.0). You will...
    651 replies | 60632 view(s)
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