How to make PCB Layout On EasyEDA?

RE: How to make PCB Layout On EasyEDA?

jc2048 — Wed, 11 Nov 2015 12:04:09 GMT

hadleywhite,

I can understand that you just wanted to demonstrate the use of the on-line tool, but there are people viewing here at many different levels of ability and I think you have a responsibility to them to present a schematic that works and to show a good layout.

Some observations:

1) The circuit won't work as it is. Without the slider of the pot connected, your feedback is asking for 124V out of a down converter with 12V as the input. That doesn't make sense. I don't know what the converter would do - it will probably just give you 12V out. 100k is an odd value anyway (even assuming you attach the slider) - a tenth of the rotation range would adjust the voltage and the rest wouldn't. A 10k pot [attach the slider to whichever side you want depending on whether you want the voltage to increase or decrease when you turn it clockwise] with R2 as 1k1 would allow adjustment from 1.2V up to 12V.

2) This is not the way to lay out a switching converter. The datasheet for the part has a whole long section devoted to layout considerations. The person who wrote it knew what they were talking about and it's a good idea to follow their recommendations or at least use them as a starting point.

3) Some of the component footprints you've chosen don't make sense. The footprint for a 680uF or 220uF electrolytic capacitor is much bigger than that and would be marked to indicate the orientation of the component. The coil is an odd choice too - I think you may need something a bit more substantial.

RE: How to make PCB Layout On EasyEDA?

DAB — Mon, 09 Nov 2015 19:40:30 GMT

Nice intro into EasyEDA.

I had seen it advertised, but never had the time to take a look.

From your example it looks fairly easy to setup a circuit and PCB placement.

How long have you used the program to get proficient in its use?

DAB

RE: How to make PCB Layout On EasyEDA?

shabaz — Mon, 09 Nov 2015 16:34:12 GMT

Only two private projects allowed without a subscription.

In what format can the private projects be locally saved, to get around the two private project limitation?

Bearing in mind that unlimited private projects are possible with EAGLE, KiCAD and the countless other free-to-use CAD packages.

RE: How to make PCB Layout On EasyEDA?

michaelkellett — Mon, 09 Nov 2015 10:13:28 GMT

Is this a blog or do you in fact work for EasyEDA ?

There is an error in you first paragraph - KiCad is truly free - open source and no charges.