Laying TL Tracks over BL Tracks

[danielrcoates]

I'm pretty new to this layout design stuff, and I have a quick question on track layouts.

I have a board, where I want to breakout the pins from a LED Matrix array to .1" headers, in order to route the tracks, I have had to lay tracks on the top layer over tracks on the bottom layer.  I don't think that this would be an issue, but I would just like to confirm, and get some opinions.

Thanks, D

[T3sl4co1l]

If it's just for LEDs, heck, who cares.

If it's for good signal quality and all that, then first things first, you want to pour ground fill around all open spaces, top and bottom.  Then join them together around crossings, so the top and bottom islands of fill act together as one.

Tim

[tggzzz]

I'm pretty new to this layout design stuff, and I have a quick question on track layouts.

I have a board, where I want to breakout the pins from a LED Matrix array to .1" headers, in order to route the tracks, I have had to lay tracks on the top layer over tracks on the bottom layer.  I don't think that this would be an issue, but I would just like to confirm, and get some opinions.

From your description, it wouldn't be a problem.

Orange flags would be sensitive analogue circuits, digital signals with fast transition "edge" rates (the period/frequency is completely irrelevant), and RF circuits.

Since you are a beginner, I'll suggest you

• make sure you understand the theory and practice of decoupling capacitors, and how to use them
• look at manufacturer's application notes, especially for the devices you are using
• think in terms of supplyling sufficient copper that the current to the LEDs has a good straight path from the driver to the LEDs and back again