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Water Level Sensor
Forgive me, but I constantly wonder why everyone wants to use pics and controllers when they are not always necessary. Here is a simple circuit that fits the bill nicely. I would use a plastic bowl and drill two hole horizontally at my upper and lower limit, put in two SS...
cam project
I am trying to find out what program created a bunch of cam project files that end in .cst but am having no success. The file is in ascii and lists the gerber files that are part of the project and an ini type entry pointing to c:\act30 as well as a group of settings indicative of...
mentor graphics eldo analog simulation
I don't use eldo, so I can't tell you how to set it up, but if it is like many other simulator programs, you would be better off logging on to the Mentor website and opening a service request. You will be contacted by someone who uses the tool regularly...
drill symbol
When you create a drill drawing, you need to specify the symbol that Pads will use for each hole size. When you create or edit the drill drawing document entry in the cam list, select Options, and then Drill Symbols. When you hit Regenerate, Pads will scan the job and list all the...
The JPCA website has a free copy in Japanese only and a free copy of JPCA-DG02 which is in Japanese and English, so I don't think they are concerned about copyrights. I need the English version of DG01
Re: PLZ HELP!!!
I don't use Eagle, but I can offer some common problems you could look at. When cad software places parts and traces on a schematic, they always snap to your grid point and if a symbol pin is on a different grid point from a trace end, they do not make a connection. I have used...
You do not need the silkscreen layer for your assembly drawing, but you will need some layer with component outlines and reference designations. If you make your part with an oversized outline on the silkscreen layer, you may not want it on the assembly drawing. In this case, you would also...
My fiducials are .040 smt dots inside a .120 dia copper and solder mask free circle. This is so the optic system has a matte background. I put three on the board, near the corners and at least two fiducials for every part whose pin spacing is .025 or less. I believe this is the ipc...
Re: jedec & ipc
Not only does the IPC bridge the gap between design and manufacturing by establishing design guidelines, they also nail down the physical packages of parts based on an industry standard name. This means that an 0805 resistor from one manufacturer will fit into a pcb footprint...
I agree with House Cat. You can get a more robust connection to the plane merely by increasing the width of the spokes. I sometimes route a fat trace on the top side and drop it to the plane with two vias that don't have thermal relief. That way I get both thermal relief and a solid plane...
If you get on the Mentor Graphics website, you will find a wide selection of white papers from all the big names in SI that you can download in pdf form. There are papers on design technique (like differential pairs, controlled impedance and autorouting) and hardware like via types, material...
view cam gerber
I like Cam350 because of the reverse engineering feature, but Viewmate is good and free as is GCPrevue (which will also import hpgl files.) I don't like Gerbtool, but just like word processors, a person usually likes best what they know how to use best. They all do the same thing.
Re: pcb layout
Doug Brooks runs a service bureau and publishes a lot of tech papers on Mentor Graphics website. He also has his own website www.ultracad.com that may have what you require.
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