for adjusting the head is the speaker/buzzer built in.(on pcb selled from spcbm)
after some training this is imho the best solution to do this.
i do it this way the last 30 years ;-)
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for adjusting the head is the speaker/buzzer built in.(on pcb selled from spcbm)
after some training this is imho the best solution to do this.
i do it this way the last 30 years ;-)
Where does the buzzer get its signal?
Anyway, here's a link to a Lemon64 thread, where the Load-it has been reverse engineered: http://www.lemon64.com/forum/viewtop...er=asc&start=0
I wonder if an Arduino could be used to substitute the two integrated chips in the Load-it?
the buzzer is getting the signal directly from datasette, which is connected to tapuino, grabbed at the ports for datasette.
and the two chips of LOAD-IT are not needed, only your two ears will take the part :cool:
the sound from the buzzer has to be clear over all frequencies given out and take care, not the loudest signal is the best !
If you once tried out succesfully adjusting the head with buzzer it is a very fast and stable method.
the problem in using LOAD-IT or such equal hardware is that they show you the "strongest" signal, but not the clearest...
I hope it is understandable what i am writing together here :blink:
Yes, it makes sense. I've once adjusted the head of an MSX datasette by playing a music tape in it and outputting it through the internal speaker.
Hi spcbm,
is the BOM for 1.7 PCB vaild for 1.71 ,too?For example, the resistor 'R3' should be mounted?If yes, is it a 10KOhm like 'R4', 'R5' and 'R7'?Thanks.
P.S.
The buzzer must respect a polarity on PCB?Is right that the three LEDs have their anode commonly connected to VCC?
The BOM is different, some names changed, take the BOM from Eagle schematic. All resistors on PCB v1.71 should be mounted.Quote:
Originally Posted by caiusfabricius
I updated the links with the 1.71 BOM take from Eagle, this is the direct link:
https://drive.google.com/file/d/0B-r...ew?usp=sharing
OK.Thanks.Regarding the buzzer, I presume there is no polarity to respect.Quote:
Originally Posted by spcbm
Positive pin pointing to IC1, if you use passive buzzers the polarity is not important.Quote:
Originally Posted by caiusfabricius
I saw the demonstration video, and I thought it might be a bit slow to scroll through the whole list of TAP files one by one. What about the list scrolling with +/-10 (and maybe increasingly more) steps if you hold down the next/prev buttons for long enough?
OK, thanks.Quote:
Originally Posted by spcbmPositive pin pointing to IC1, if you use passive buzzers the polarity is not important.Quote:
Originally Posted by caiusfabricius
Just a couple of notes about the BOM if you allow me:
-About C1 capacitor : it would be better to write 47uF and not 47MF (someone could think Megafarad)
-About T1-T2-T3 transistors : it would be better to indicate them as 'PN2222' (TO-92 package) since the original '2N2222' come with a TO-18 package which would not fit in the Tapuino PCB.