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Hardware is the New Web

Andrew Back
Open source (hardware and software!) advocate, Treasurer and Director of the Free and Open Source Silicon Foundation, organiser of Wuthering Bytes technology festival and founder of the Open Source Hardware User Group.


October 28, 2011 15:23

Spot on Brom!Sure enough, there was a dot inadvertently placed in the pcb symbol, way outside the TFQP package. This caused the 3d representation to size incorrectly. Now working fine.Thanks!Norbert

0 Votes

October 28, 2011 13:41

Hello NorbertPayneCan you send us your Component file please? It is my suspicion is that its over-calculating the size of the component body for some reason, perhaps something on the pcb symbol definition is outside the main shape and that is confusing the size calculation.You can send this to DesignSparkPCB@rs-components.comBest regardsBrom

0 Votes

October 27, 2011 16:05

Using a Microchip 18F67K22I, TQFP-64 (10x10mm) package.In DesignSpark, selected TQFP64_10x10MC from the microchippic.pst PCB library, which in 3D displays the TSQFP* package in the SMT.pkg 3d library.In 3D view, the TSQFP package looks fine.But when I add the component to the PCB, and view in 3d, something strange: the pins of this 64-pin device are displayed correctly, but the black body of the ic is too large. In the default 3d view, the front and left sides of the black body align correctly with the front and left rows of pins, but the back and right side of the body project way beyond the pins. If I edit the component to use the TQFP64-16x16MC package from the microchippic.pst file, and update my component on the pcb, it displays correctly, all the body is inside the pins. So there seems to be an error in the internal dimensions of the TQFP64_10x10MC model. But these are not accessible from the 3D edit dialog.Solution, anyone? I do want to use the smaller footprint (10x10mm) version of this pic!

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