Whoeps Vasile, that looks great.......... now see what and how........ iThanks
Op woensdag 16 november 2022 om 19:41:34 UTC+1 schreef vasile: > Hello senior contributor, > there are at least two serious software for filter computing named > Filterpro from TI and Elsie from Tone software, both free at the time I've > work with. Each is excellent just for a segment of filters...not for > everything. > > > On Wed 16 Nov 2022, 10:21 AM hans <hanz...@zeelandnet.nl wrote: > >> Hello highly honored public, >> >> I did some research in low/high pass filter science and found a lot of >> calculation programs. >> >> In the contribution of Kiste 20 Mar. 2022 13:22:10 an R value of 680 .. 1 >> K is indicated and a C value of 1uF. The system works with 5 and 8 kHz. >> When I run the found calculation tool on it, I get very different values. I >> must be completely wrong again, but the transmitter and receiver do work, >> only with glitches. >> >> My question is outside the JALLIB world but I'll try anyway. >> >> regards >> >> Hans >> >> Op maandag 14 november 2022 om 21:19:26 UTC+1 schreef hans: >> >>> Hi Kiste, >>> >>> Sometimes I have to push things aside. So is this topic. I have taken up >>> the matter again and on my pin board both the transmitter and the receiver >>> work with a 12F683 at 1200 baud. I did put a 100nF in series at the output >>> according to your diagram. I also put a similar filter in the input of the >>> receiver. Identical to your proposal but because I know absolutely nothing >>> about filter matters I don't know if I did this right. >>> >>> I feed a separate uart signal as input and read out another uart with >>> the receiver. >>> >>> I recorded the signal with audicity and saved it as WAV. When playing >>> back to the receiver I do get responses but there is quite a bit of junk. >>> >>> My question : what should the inlet filter to the receiver look like. >>> >>> I know your box of thanks is already full, but I'll add another one. >>> >>> regards >>> >>> Hans >>> >>> Op zondag 19 juni 2022 om 12:46:36 UTC+2 schreef hans: >>> >>>> Hello all, >>>> I've tried many things, but I always had problems. I have now received >>>> a handful of MT8880 from china and this time they all worked. Even when I >>>> apply this I regularly have malfunctions, but if I repeat every command 3 >>>> times and check then it works. I'm a bit further, only the person I was >>>> working for has unfortunately chosen something else. So this will go in >>>> the >>>> "you can't know box" for now. >>>> We continue happily, it remains fun. >>>> regards >>>> Hans >>>> >>>> Op dinsdag 5 april 2022 om 19:57:25 UTC+2 schreef rob...@hotmail.com: >>>> >>>>> Hi Kiste, >>>>> >>>>> Nice solution. Hans has options to select from 🙂. >>>>> >>>>> BTW. @hans. I made as small error in my hardware receiver solution. >>>>> Capacitor C3 should be 2nF (two 1nF in parallel) but if I where you I >>>>> would >>>>> try Kiste's solution first. If that works you are done. >>>>> >>>>> Kind regards, >>>>> >>>>> Rob >>>>> >>>>> ------------------------------ >>>>> *Van:* 'Oliver Seitz' via jallib <jal...@googlegroups.com> >>>>> *Verzonden:* dinsdag 5 april 2022 19:12 >>>>> >>>>> *Aan:* jal...@googlegroups.com <jal...@googlegroups.com> >>>>> *Onderwerp:* Re: [jallib] PWM serial audio transmission >>>>> I have only made small changes in the code and improved the comments. >>>>> I did not try this version, but I'm quite sure it should work. You only >>>>> need a PIC, a resistor, a TTL-Serial converter with a computer and the >>>>> sample audio file which i posted earlier to see it working. >>>>> >>>>> (You can even omit the resistor, but you could fry the PIC then. >>>>> Especially if you don't use the error LED and have no idea about what >>>>> volume to set) >>>>> >>>>> Greets, >>>>> Kiste >>>>> >>>>> Am Dienstag, 5. April 2022, 12:05:59 MESZ hat hans < >>>>> hansvanve...@gmail.com> Folgendes geschrieben: >>>>> >>>>> >>>>> Hello Rob and Kiste, >>>>> The next days i have a friend who can assist me. So (beside his AC >>>>> project) we might find time to continue with this . So please give us the >>>>> last info. >>>>> Thanks again >>>>> hans >>>>> >>>>> Op zondag 3 april 2022 om 15:57:03 UTC+2 schreef rob...@hotmail.com: >>>>> >>>>> Hi Hans, >>>>> >>>>> I also tried it with a lower frequency, 3330 Hz for the low tone and >>>>> 4030 Hz for the high tone so that the signal is strong enough when you >>>>> record it. >>>>> >>>>> If you want to know more, let me know. >>>>> >>>>> Kind regards, >>>>> >>>>> Rob >>>>> >>>>> ------------------------------ >>>>> *Van:* jal...@googlegroups.com <jal...@googlegroups.com> namens hans < >>>>> hansvanve...@gmail.com> >>>>> *Verzonden:* zondag 3 april 2022 15:11 >>>>> *Aan:* jallib <jal...@googlegroups.com> >>>>> >>>>> *Onderwerp:* Re: [jallib] PWM serial audio transmission >>>>> Still foggy, just wait a little longer with this case. >>>>> >>>>> Op zaterdag 26 maart 2022 om 20:05:55 UTC+1 schreef rob...@hotmail.com >>>>> : >>>>> >>>>> Hi Hans, >>>>> >>>>> I hope you are getting well soon. Last update. I recorded the audio >>>>> and played it back to see if it works. >>>>> >>>>> And it seems to work but may need some fine tuning. In this video you >>>>> see the device in operation: https://youtu.be/w-j0ekk975g >>>>> >>>>> The yellow line on the oscilloscope is the audio signal and the blue >>>>> line the trigger signal. This trigger signal is also visible by the Amber >>>>> LED on the top right of the breadboard. >>>>> >>>>> I recorded the low tone (it is a video recording but I am only using >>>>> the audio) and switched from low tone to the high tone frequently. What >>>>> you >>>>> see is that the signal of the high tone is smaller but it still works. >>>>> You >>>>> also see that the refresh of the oscilloscope is a bit behind so the LED >>>>> on >>>>> the breadboard shows the real trigger. I also attached two screenshots. >>>>> You >>>>> see that the trigger response is quite fast (zoomed in) but with a high >>>>> tone it is not constant (see zoomed out) but that can be solved in >>>>> software >>>>> and could be because the signal is smaller. Also I noticed that when no >>>>> signal is present the output is also high but that stops as soon as the >>>>> low >>>>> tone is detected. >>>>> >>>>> So still a proof of concept but seems to do something. I also attached >>>>> the audio tone. Maybe lower tones would be better. >>>>> >>>>> For recording I just used the output of the PIC using a resistor >>>>> divider of 10 k with 100 Ohm and connecting that to the line in of my >>>>> computer. For playback I added an LM358 to amplify the input signal and I >>>>> used the headphone output. >>>>> >>>>> Kind regards, >>>>> >>>>> Rob >>>>> >>>>> >>>>> Op donderdag 24 maart 2022 om 12:47:49 UTC+1 schreef >>>>> rob...@hotmail.com: >>>>> >>>>> Hi Marieke, >>>>> >>>>> Thanks for the update. Let's hope Hans recovers soon. >>>>> >>>>> Kind regards, >>>>> >>>>> Rob >>>>> >>>>> ------------------------------ >>>>> *Van:* 'Oliver Seitz' via jallib <jal...@googlegroups.com> >>>>> *Verzonden:* donderdag 24 maart 2022 07:37 >>>>> >>>>> *Aan:* jal...@googlegroups.com <jal...@googlegroups.com> >>>>> *Onderwerp:* Re: [jallib] PWM serial audio transmission >>>>> Altijd met Rust... >>>>> >>>>> It took me two weeks to think, code and test, and it will take more >>>>> weeks for proper documentation. So no need for you to hurry ;-) >>>>> >>>>> Greets, >>>>> Kiste >>>>> >>>>> Am Mittwoch, 23. März 2022, 22:36:19 MEZ hat hans < >>>>> hansvanve...@gmail.com> Folgendes geschrieben: >>>>> >>>>> >>>>> Hello everyone, >>>>> >>>>> My grandfather Hans has only one usable eye and has got an infection >>>>> on it. We have read your contributions and he is very happy with them. >>>>> Sorry but he can't work with it right now. >>>>> >>>>> Regards Marieke >>>>> >>>>> Op woensdag 23 maart 2022 om 17:22:42 UTC+1 schreef Kiste: >>>>> >>>>> And here's the receiver, and a sample file. Mp3 does work at 1200baud, >>>>> but you shouldn't use less than 128kbit for encoding. At 80kbit I only >>>>> got >>>>> garbage. Volume must be reasonably high, slowly turn louder until the >>>>> error >>>>> LED is constantly off. >>>>> >>>>> Don't send too much data back-to-back, have pauses of like 10 ms every >>>>> second (but keep the tone on all the time) >>>>> >>>>> Don't assume error-free transmission, send data multiple times and >>>>> check when receiving. >>>>> >>>>> Greets, >>>>> Kiste >>>>> >>>>> >>>>> >>>>> Am Sonntag, 20. März 2022, 13:22:14 MEZ hat 'Oliver Seitz' via jallib < >>>>> jal...@googlegroups.com> Folgendes geschrieben: >>>>> >>>>> >>>>> Hi all, >>>>> >>>>> here's my encoder. I looked for something similar to the 12F683 which >>>>> Hans has in stock, and found some 12F629, which should be quite >>>>> compatible. >>>>> >>>>> >>>>> C1: minimum 1µF, no need to be polarized >>>>> R1:680R..1k >>>>> C2: 100nF >>>>> R2:1k..4k7 >>>>> D1=D2: 1N4148, 1N4001 or similar, silicon, not schottky >>>>> >>>>> This gives a frequency which a line (AUX) audio input should be able >>>>> to handle. The receiver will be the same kind of chip, but it must have a >>>>> comparator and a reference voltage module. TMR0 will be used. >>>>> >>>>> The transmitter will work on any 6 or 8 pin controller, as it doesn't >>>>> use any peripherals. >>>>> >>>>> Greets, >>>>> Kiste >>>>> >>>>> >>>>> -- >>>>> You received this message because you are subscribed to the Google >>>>> Groups "jallib" group. >>>>> To unsubscribe from this group and stop receiving emails from it, send >>>>> an email to jallib+un...@googlegroups.com. >>>>> To view this discussion on the web visit >>>>> https://groups.google.com/d/msgid/jallib/189584036.471955.1647778917998%40mail.yahoo.com >>>>> >>>>> <https://groups.google.com/d/msgid/jallib/189584036.471955.1647778917998%40mail.yahoo.com?utm_medium=email&utm_source=footer>. >>>>> >>>>> >>>>> >>>>> -- >>>>> You received this message because you are subscribed to the Google >>>>> Groups "jallib" group. >>>>> To unsubscribe from this group and stop receiving emails from it, send >>>>> an email to jallib+un...@googlegroups.com. >>>>> To view this discussion on the web visit >>>>> >>>>> https://groups.google.com/d/msgid/jallib/2bdcd32b-101d-4d29-8397-ddbb370e4788n%40googlegroups.com >>>>> >>>>> <https://groups.google.com/d/msgid/jallib/2bdcd32b-101d-4d29-8397-ddbb370e4788n%40googlegroups.com?utm_medium=email&utm_source=footer> >>>>> >>>>> . >>>>> >>>>> -- >>>>> You received this message because you are subscribed to the Google >>>>> Groups "jallib" group. >>>>> To unsubscribe from this group and stop receiving emails from it, send >>>>> an email to jallib+un...@googlegroups.com. >>>>> To view this discussion on the web visit >>>>> https://groups.google.com/d/msgid/jallib/1612276249.1299494.1648103861495%40mail.yahoo.com >>>>> >>>>> <https://groups.google.com/d/msgid/jallib/1612276249.1299494.1648103861495%40mail.yahoo.com?utm_medium=email&utm_source=footer> >>>>> . >>>>> >>>>> -- >>>>> You received this message because you are subscribed to a topic in the >>>>> Google Groups "jallib" group. >>>>> To unsubscribe from this topic, visit >>>>> https://groups.google.com/d/topic/jallib/46GAtaPeJ_k/unsubscribe. >>>>> To unsubscribe from this group and all its topics, send an email to >>>>> jallib+un...@googlegroups.com. >>>>> >>>>> To view this discussion on the web visit >>>>> https://groups.google.com/d/msgid/jallib/bac9ec42-c8a3-4f2f-82b1-16b63d06b6f6n%40googlegroups.com >>>>> >>>>> <https://groups.google.com/d/msgid/jallib/bac9ec42-c8a3-4f2f-82b1-16b63d06b6f6n%40googlegroups.com?utm_medium=email&utm_source=footer> >>>>> . >>>>> >>>>> -- >>>>> You received this message because you are subscribed to the Google >>>>> Groups "jallib" group. >>>>> To unsubscribe from this group and stop receiving emails from it, send >>>>> an email to jallib+un...@googlegroups.com. >>>>> To view this discussion on the web visit >>>>> >>>>> https://groups.google.com/d/msgid/jallib/df201f79-6365-434b-b804-c948ddb305b3n%40googlegroups.com >>>>> >>>>> <https://groups.google.com/d/msgid/jallib/df201f79-6365-434b-b804-c948ddb305b3n%40googlegroups.com?utm_medium=email&utm_source=footer> >>>>> >>>>> . >>>>> >>>>> -- >>>>> You received this message because you are subscribed to the Google >>>>> Groups "jallib" group. >>>>> To unsubscribe from this group and stop receiving emails from it, send >>>>> an email to jallib+un...@googlegroups.com. >>>>> To view this discussion on the web visit >>>>> https://groups.google.com/d/msgid/jallib/523724631.932444.1649178768469%40mail.yahoo.com >>>>> >>>>> <https://groups.google.com/d/msgid/jallib/523724631.932444.1649178768469%40mail.yahoo.com?utm_medium=email&utm_source=footer> >>>>> . >>>>> >>>> -- >> You received this message because you are subscribed to the Google Groups >> "jallib" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to jallib+un...@googlegroups.com. >> > To view this discussion on the web visit >> https://groups.google.com/d/msgid/jallib/1b6cabb9-2e2e-406e-869f-316258ebec75n%40googlegroups.com >> >> <https://groups.google.com/d/msgid/jallib/1b6cabb9-2e2e-406e-869f-316258ebec75n%40googlegroups.com?utm_medium=email&utm_source=footer> >> . >> > -- You received this message because you are subscribed to the Google Groups "jallib" group. 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