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
<hansvanveldhuize...@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 veryhappy 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 polarizedR1:680R..1kC2: 100nFR2:1k..4k7D1=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
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