Electronics > Beginners
Trouble reproducing a schematic on KiCad
redgear:
I am trying got reproduce a open source schematic on KiCad. The MCU also some pinouts missing. I am not able to find the same symbols for GND, 3V3 and the crystal oscillator. I guess the oscillator used here is a 4 pin oscillator but symbols are very different from what I see in KiCad. I have marked the symbols on the below image.
Image
paulca:
The 3v3 symbol in KiCAD is the (more standard) upwards arrow. I'm not sure which category it's in.
As to not having the 4 pin oscillator. You can ask if you need that, depending on whether you are trying to exacly replicate the schematic or the circuit as I'm sure the MCU can be made to work with a normally 2 pin one.
Of course, almost all KiCAD schematics will require at least one custom component/symbol to be created.
Another option is to search for add-on libraries. There are some quite large collections of these around. Sorry I don't have links, it's been a year or so since I did anything in KiCAD in anger.
redgear:
--- Quote from: paulca on August 16, 2019, 12:22:47 pm ---The 3v3 symbol in KiCAD is the (more standard) upwards arrow. I'm not sure which category it's in.
As to not having the 4 pin oscillator. You can ask if you need that, depending on whether you are trying to exacly replicate the schematic or the circuit as I'm sure the MCU can be made to work with a normally 2 pin one.
Of course, almost all KiCAD schematics will require at least one custom component/symbol to be created.
Another option is to search for add-on libraries. There are some quite large collections of these around. Sorry I don't have links, it's been a year or so since I did anything in KiCAD in anger.
--- End quote ---
Thanks! I am trying to replicate the same as I am just starting to learn and changing the components and tweaking it would be more difficult for me. Are they using a wire or bus for connections?
electricMN:
I believe that crystal is one of the ones that have pins for grounding the case or they are indicating to ground the case with wire.
james_s:
Libraries have varying quality and some have hidden pins for power and ground, which is not something I like. Generally the only default symbols I use are basic stuff like capacitors and transistors, for everything else I create my own. It saves a lot of time in the long run.
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