small help for my pic project please

My problem is, aside from I'm new to electronics, I also live in the remote part of the Philippines, where electronic parts are really scarce. How remote? very very remote. Out in the woods Now, I bought this replacement part because the other one is not available, but I'm not sure if I should use it.

Here's the schematic diagram:

**broken link removed**

Here's what I think I should have bought (4 MHz ceramic resonator):

**broken link removed**

And here's what they only have (labeled 4.000 MHz):

**broken link removed**


The pins were different. The one I bought only has 2 pins when it should have 3.

Is it okay to use this? and do these pins have polarity? should I just ignore the GND connection?

And one last final thing. What does VCC there mean? does it mean +6v?


Thanks a lot in advance

It's hard to tell but it looks like a 2 pin resonator. Should be fine but you'll need to add a couple of 33pf caps one from each leg to ground

VCC is 5v, 4 AA NiMH will be about 5v when fully charged.

blueroomelectronics said:

It's hard to tell but it looks like a 2 pin resonator. Should be fine but you'll need to add a couple of 33pf caps one from each leg to ground

VCC is 5v, 4 AA NiMH will be about 5v when fully charged.

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Rechargeable batteries?

I have a Cannon AC-DC adaptor, 3-12v 500ma

It has 4.5 and 6 volts selection

Which one should I use?

Thank you very much for your help. I'll buy those 33 pf tomorrow

4.5V should be fine, but you'll need more than 500ma if you plan on running more than a couple of servo motors.

blueroomelectronics said:

4.5V should be fine, but you'll need more than 500ma if you plan on running more than a couple of servo motors.

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Okay thanks.

i'm just trying light up some LED and switch one or two 12v relay.

You were really a BIG help. Thanks again man.

I'm a newbie

Very interesting stuff here

forgive me but should i use electrolytic or ceramic?

wejos said:

forgive me but should i use electrolytic or ceramic?

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For a crystal (or resonator)? Ceramic.

futz said:

For a crystal (or resonator)? Ceramic.

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no the 33pf

wejos said:

no the 33pf

Click to expand...

Yes. The 33pF's.

wejos said:

no the 33pf

Click to expand...

You won't find a 33pF electrolytic (or anywhere near it).

oh, sorry, i get it now

no electrolytic 33pf?

thanks guys

thanks blueroomelectronics

thanks futz

thanks Nigel Goodwin