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"If the Earth were a single state, Istanbul would be its capital." Napoleon Bonaparte
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Hi, Art
Nice piece of wrapping ... impressing !!!
Seriously, I do not see the unforgettable ceramic capacitor ( 0.1 - 0.22µ multilayer ) which ever should be placed CLOSEST as possible to the Pic supply pins ... ( lower and upper right )
Also, you should try to place the Xtal and its caps on the other side of the pic, close to the pic pins ... ( nice 8 Mhz emitter !!! ... lower right )
there's lots of noise to catch here ...
a big reservoir cap ( L.S.R. ) is also a must to place close to the multiplexed LED displays:
they generate lots of noise ...
Alain
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Why insist on using 32 Bits when you're not even able to deal with the first 8 ones ??? ehhhhhh ...
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IF there is the word "Problem" in your question ...
certainly the answer is " RTFM " or " RTFDataSheet " !!!
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Thanks
The 0.1 uF caps are there right next to every pic. They are blue.
Originally Posted by Acetronics
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Bah! bit of a nightmare project.
I think the noise stopped when I was using a capacitor is because I was holding
it with my fingers.
I have tried a transistor OR gate to ground the input pin of the amplifier.
The amplifier is connected to an FM radio circuit, and a pic pin that produces sound.
The OR gate can receive a busy signal from either the pic or radio circuits
to make it stop shorting the amplifier input to ground.
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Thanks
The 0.1 uF caps are there right next to every pic. They are blue.
Hi,
Blue or not ...
They still are TOO FAR from the pic supply pins ...
Alain
************************************************** ***********************
Why insist on using 32 Bits when you're not even able to deal with the first 8 ones ??? ehhhhhh ...
************************************************** ***********************
IF there is the word "Problem" in your question ...
certainly the answer is " RTFM " or " RTFDataSheet " !!!
*****************************************
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You think I'd hear less noise from the amp if I moved the 0.1uF caps closer to each chip?
I had another idea. What if next time I used a copper clad board of the same
size underneath the proto PCB, so I could drill one layer down to a ground plane at any location?
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