Designing a PCB layout (Using a real example: Ladybug) - Electronic Circuits Projects Diagrams Free

blueroomelectronics · 10th March 2008, 08:25 PM

I thought some of you might get something out of my layout work using Sprint Layout.
Ladybug is the next kit coming out so I'm going to start posting the layout as the work progresses.
Feel free to comment or question as the work proceeds.

Although this is not the beginning this is layout #7 it's the relay portion of the PCB (thought I'd get them out of the way first). I finally settled on the J1S series relays as they are small, high current 10A and inexpensive. I had to draw the package into Sprint (from the relay datasheet) but that's another tutorial if anyone's interested.

A section of the Ladybug PCB showing the two regulators (one for relays, other for logic)

blueroomelectronics · 10th March 2008, 10:08 PM

A few parts have been moved... Large filter caps added and a bridge rectifier.

**3v0** · 10th March 2008, 10:29 PM

I have not done any calculations but maybe make the traces on the driven side of the relays wider.

blueroomelectronics · 10th March 2008, 10:41 PM

Quote:

Originally Posted by 3v0

I have not done any calculations but maybe make the traces on the driven side of the relays wider.

They were 1.8mm now they're 2.0mm and I've put identical traces on both top & bottom copper layers.

monkeybiter · 10th March 2008, 11:24 PM

I look foreward to further posts in this thread. I'm currently populating a pair of small double sided boards [which together will make an inchworm+] and it is painfully clear I have a lot to learn [poetic justice for not buying?].
Any education will be more than welcome.

blueroomelectronics · 26th March 2008, 01:58 AM

As the PCB grows, it's going to be a fair sized PCB (which means not cheap as you pay by the square inch)
It'll grow wider as I add the Ethernet & LCD connectors. A pair of fuse holders / PTC will go along the bottom.

Ladybug keeps on growing

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10th March 2008, 08:25 PM	(permalink)
blueroomelectronics	Designing a PCB layout (Using a real example: Ladybug) I thought some of you might get something out of my layout work using Sprint Layout. Ladybug is the next kit coming out so I'm going to start posting the layout as the work progresses. Feel free to comment or question as the work proceeds. Although this is not the beginning this is layout #7 it's the relay portion of the PCB (thought I'd get them out of the way first). I finally settled on the J1S series relays as they are small, high current 10A and inexpensive. I had to draw the package into Sprint (from the relay datasheet) but that's another tutorial if anyone's interested. A section of the Ladybug PCB showing the two regulators (one for relays, other for logic) __________________ Bill Smart Kits build Smart People http://www.blueroomelectronics.com

10th March 2008, 10:08 PM	(permalink)
blueroomelectronics	A few parts have been moved... Large filter caps added and a bridge rectifier. __________________ Bill Smart Kits build Smart People http://www.blueroomelectronics.com

10th March 2008, 10:29 PM	(permalink)
3v0	I have not done any calculations but maybe make the traces on the driven side of the relays wider. __________________ search engine for electronic parts Junebug USB PIC programmer kit., USB Bit Wacker, Homepage The 15 Minute Printed Circuit Board! (+drill time)

10th March 2008, 11:24 PM	(permalink)
monkeybiter	I look foreward to further posts in this thread. I'm currently populating a pair of small double sided boards [which together will make an inchworm+] and it is painfully clear I have a lot to learn [poetic justice for not buying?]. Any education will be more than welcome.

26th March 2008, 01:58 AM	(permalink)
blueroomelectronics	As the PCB grows, it's going to be a fair sized PCB (which means not cheap as you pay by the square inch) It'll grow wider as I add the Ethernet & LCD connectors. A pair of fuse holders / PTC will go along the bottom. Ladybug keeps on growing __________________ Bill Smart Kits build Smart People http://www.blueroomelectronics.com