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]

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.

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.

[Zero999]

X2 is not an oscillator, it's just a crystal. To make an oscillator an amplifier is required and in this case it's inside the MCU. The crystal is just the tuning element. It could be replaced with a ceramic resonator or even an LC circuit, but it wouldn't be as stable or as accurate as a crystal.

[Bassman59]

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

The Power library has all of the supply and ground symbols. What they actually look like doesn’t matter. But the name of the power symbol is also the net, so that needs to match.

As for the oscillator, I know there is at least one Kicad library that has them. Again what it looks like probably doesn’t matter, as long as the pinout is correct.