Questions tagged [cad]
Computer Aided Design
157 questions
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Part numbers in BOM, cut the packaging info or not
In a BOM, is it better to use part numbers including packaging info or better to exclude these info?
Exemple using that resistor series.
The last letters correspond to packaging (size and quantity on ...
- 292
0
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191
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Does this circuit look correct - PCA9685
I need to control 18 servo motors mg996r's. I plan to use two PCA9685s. I have followed reference schematics pretty closely, but wanted to add an enable pin and reverse polarity protection, also I ...
1
vote
1
answer
112
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convert kicad 6 model of AD5206 to kicad 8
I have some AD5206 digital potentiometers in a circuit, and I am trying to add the footprint to the kicad model for the schematic. Digikey offers the model, but while the option for kicad v6+ is the ...
-3
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1
answer
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Looking to build my own personal microcontroller in a CAD software [closed]
I am looking to create a microcontroller, I would like to know about a good place to do research and help me create one in CAD software. I understand that this is a broad topic, and most of the ...
0
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1
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125
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Are there locking headers in Autodesk Fusion 360? (Electronics design)
I'm making a PCB for a project of mine using Autodesk's Fusion 360, and I'm looking for some connectors to plug other PCBs into. I've had my eye on some Imperial Locking Headers but I can't find any ...
- 103
8
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4
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1k
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Software to get transfer function from a schematic
Is there a software (preferably open source) where one draws a schematic, one defines input and output and the software automatically gives the transfer function (to be more specific: a symbolic ...
- 1,364
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2
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917
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In Altium, how do I create mounting holes for a through hole transistor? [closed]
I am starting to learn Altium and I don't know how to create a through hole footprint. How do I get started on this?
https://www.mouser.com/ProductDetail/Diotec-Semiconductor/BC337-40?qs=...
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-2
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1
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250
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TinkerCAD Digital Logic LED [duplicate]
I finished building this circuit in TinkerCAD, but for some reason the AND gate won't behave like it's supposed to. Shouldn't the LED turn ON when both 1 and 2 are ON? Instead, it turns ON when both 1 ...
-1
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1
answer
226
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TinkerCAD Digital Logic
Everything here seems to be right, like the gates and resistors, but the gate seems to be the issue; the LED is off when the switch is on. What is the issue? I have also included the schematic.
0
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1
answer
605
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How do I change minimum anular ring in vias for different layers in Altium?
I want to send my gerbers to a PCB manufacturer but its manufacturing capabilities force diferrent minimum anular ring for vias in different layers. For outer layers, its 0.13 mm and for internal ...
0
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0
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140
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Altium Efficient Usage of Signal Harness
I have a 16-channel differential analog input which I would like to represent through a signal harness (see below). I am new to Altium, and I am curious if there is a trick to define my harness more ...
- 101
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PCB components/ creation
I am tasked with the creation of a PCB that is quite simple. It is only a simple route from a 26 pin MDR to a 2 pin terminal block. I am stuck though.
I am using Fusion 360 and I have a few questions.
...
- 363
2
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4
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203
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Is there a Design Rules change to fill in this gap between an IC and polygon in Eagle?
I adjusted the clearance values, and that did not fill in the gap.
- 727
3
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1
answer
624
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What are some best practices for library management for schematic and PCB design?
Most CAD packages use a "symbol" and "footprint" library approach when it comes to designing schematics and PCBs. Some (like recent versions of Altium) have "component" ...
- 582
0
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1
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ECAD Program that knows about breakout boards?
Are there any ECAD/layout programs that know about popular breakout boards in their component libraries? For example, pieces like an ESP32 Dev Board or TB6612FNG breakout board.
(note) I am not ...
- 11k