About designing the boards which carry the components of an electronic circuit. For questions about getting them built instead use pcb-fabrication. If your question is specific to a certain CAD tool, say which tool and version you are using.
1
vote
3answers
118 views
Cannot find SMD resistors in Altium
I just moved from Eagle to Altium. I cannot find SMD resistors in Altium libraries. In Eagle, there are almost all general components. In Altium there are only few resistors. Where can I download the ...
1
vote
2answers
146 views
Chip antenna mounting considerations
I'm using this chip antenna with a 868MHz radio (RFM12B): http://www.johansontechnology.com/datasheets/antennas/0868AT43A0020.pdf
According to the datasheet's mounting considerations there's a trace ...
3
votes
1answer
185 views
Need help with selecting an antenna for PCB
I have designed a pair of circuits which utilize the QAM-TX2-433-ND/QAM-RX2-433-ND transmitter/receiver.
So far everything is hooked up on solderless breadboards, with just a length of wire for ...
2
votes
1answer
48 views
Eagle configure autorouter to solder components (except vias) only on bottom layer of double sided PCB
In double sided PCBs it is difficult to solder through hole components like IC bases, headers, etc. in the top layer. Normally the Eagle autorouter places the solder pads on both sides. That is, in a ...
1
vote
1answer
202 views
How to export Slots in Altium?
I made my first PCB with slots, and Altium is generation two .txt files...one for the drills, and one for the slots...how do I combine them to send it to the manufacture?
2
votes
0answers
37 views
Altium: Query to target Vias in Pads
Does anyone have a Altium query/selector that targets vias in SMT pads? I'm routing a very dense HDI board, and would like to make rules that exclusively target vias that are inside a component pad ...
2
votes
0answers
120 views
View physical size before placing component, DipTrace
Is there a way to view the physical size of a component before it is placed in the schematic editor in DipTrace, like it's shown in Eagle?
I like to use DipTrace because it seem to have a nice ...
2
votes
0answers
594 views
Library of footprints for Cadence Allegro / PCB Editor
I keep having to design my own footprints for Cadence Allegro / PCB Editor even for standard parts. There are lots of libraries for schematic capture symbols but I am having trouble finding ...
1
vote
0answers
97 views
What is this program called and where can I learn about it?
I've seen a video of someone who created an intelligent waste bin. It could catch objects you threw at it by observing thrown objects with Kinect and driving at the location of impact (YouTube).
He ...
1
vote
0answers
119 views
In Orcad 16.5 is there a way to use a spread sheet to edit footprint padstack locations?
New user to Orcad 16.5 and having trouble finding how to access spread sheet for footprint symbol editing. Any help would be appreaciated as the online help is almost impossible to use.
0
votes
0answers
89 views
Interchangeability of VNH5019 and VNH2SP30
I have a driver carrier board design for VNH2SP30. It supports a maximum of 16V and because of this I want to switch to VNH5019 which supports 24V.
When I looked into their datasheets (p.20 Fig.32 ...
