I need a crystal oscillator for an atmega 328p IC. I am making my own pcb. I will be ordering from jlcpcb. There are too many smd options. Can someone point me in the right direction ? Model number or something ? I have no idea how to choose. I am basically using a few digital pins on the atmega

Place the GND pour on the bottom of the board, remove it from the top of the board. An x-ray view is useless, show the bottom view, no x-ray. The traces do appear too thin. Your VIAs look small too. What is the voltage going into the regulator ? Put a series 470R resistor in the LEDstrip…

[grafik] 5V input and 5V output ? [grafik]

Doesn't look like you paid attention toany of the recommendations we made earlier in this thread.

Are you sure you don't need any mounting holes? Do you need the board to be that big? It looks like you could halve the board area. In doing so you might reduce the PCB cost.

Thanks for the tip. You are right, eventually I will need mounting holes but this is only a test. Eventually I will design the pcb to my required shape and size. I just thought it would be simpler for now. Thank you for your time

I have. I have left the entire system on 5V instead of both 5V and 3.3V. Sorry if I missed something else. Maybe you could just point out what I have to do again. I am a beginner. Thank you for your time anyway

Ok thanks for the hint. So I just make the power traces a bit thicker ? Can the other traces stay that size ? Thanks for your time

Yes 5V in and 5V out. I will probably be connecting a USB cable. Sorry but I don't understand what your trying to say with the second image. Thanks for your time

GND on the bottom ? There will be a screw terminal soldered to the connection. :thinking: Do I need to increase the size of all the traces or just the power ones ? And if so how do I know what size they need to be. Same with the VIAs how do I know what size and do I need to increase size on all of …

I have uploaded a screenshot from the back side

16 Mhz smd crystal oscillator

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LarryD September 24, 2024, 7:16pm 54

WOW, I have settled on 2mm for 90% of my projects now.

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16 Mhz smd crystal oscillator

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