Search found 22 matches

Yes, you are rigth. In my hand wired board, it worked, but I remember that in my test board I have pullups in all pins. That was my mistake in my board, I don�t put pullups in all. RB4 was working wro ...

Yes, thanks everybody, problem solved.
The board is perfect, all works perfectly (included transistors and buzzer Laughing

, the problem was in the bootloader, it had enabled the LVP and didn�t allow th ...

Yes, I think that I have a mistake in the design or in any electrical property of any component, in due I posted my electrical design.
I hope you could help me to find the mistake.
Thanks

Thanks for your answers and ideas.
I can tell you that I forwarded the nets on the board thousand times, I took the polimeter and tested all points and pines, and all seems correct.
I made the board ...

Who are you to close an issue, "guest"? Laughing

You must speak only for yourself, if you don�t like read this topic, don�t read it Wink

I�m sure that we can solve this problem without you Wink

...

I think you don�t understand this yet...
The PCB Is correct, all connections are good. I took the polymeter and tested all. All is equals than in the hand wired board. I repeat that I don�t understan ...

I want to know, what is the problem?
Do you have any problem with my question?
I have a problem, I ask your help. I�m very serious. I�m asking about a problem with the reset and the MCLR, and you an ...

jejejeje Yes, it works. That isn�t the problem, forget the transistors Wink

The problem is in MCLR (or that I think Confused

If you look the schematics you understand it.
The symbols are WRONG!!! I put these symbols because I want show that is an PNP transistor, but I had to allocate the pins in that form because my transi ...

The A4 is an open collector, it�s true, but my design works fine, I tested it, it has nothing to do with the problem. The buzzer sounds perfectly when I want. The MCLR problem persists...
The bootloa ...

I tested it, and the same. I don�t think in a soft problem, because I tested this simple program, and the same... I program it, when I power on, if a push B7 sounds, if a do a reset with MCLR, doesn�t ...

Ohhhh, incredible... I done another prototype, I checked all connections, all works perfectly when I power on the circuit, but if I do the MCLR it stop... I�m desperate.
My fuses are:

#include < ...

Yes, it isn�t a rocket science, but in this case, this isn�t working.
I�m working in a new prototype, I will test it tomorrow, I hope that this solve the problems Confused

The R4 is disconnected and the capacitor is disconnected too. The same results. What�s wrong???

Thank you very much for your time. I answer your questions:
1) I haven�t the transistors conected. In the schematics they seem are wrong (colector, base emisor) but they are well, I put that order fo ...