Kicad libraries are “read only”, so to change U1 (15 pins) to Ux (18 pins) requires a bit of effort.
- Create a personal library. See this FAQ
- Place the Kicad MAX-M8Q into your personal library. To do this:
Open the Symbol Editor,
Find, highlight, then Right click the MAX-M8Q from the library list on the left.
Click “save as” and in the new window, scroll to and highlight your new personal library. Click “save”.
The Kicad MAX is now in your personal library as well as the Kicad library. As I stated above, you cannot do anything with the Kicad library symbol except copy/paste, but you may now do whatever you wish with the Max in your personal library, so:
- Double left click the Max in your personal library and notice the symbol. Pin 15 is colored Cyan, this means it is hidden. Double left click pin 15 and tick the box “visible” then OK.
Note the cyan mess around pin 1. This means there are pins stacked. Single click pin 1 and move whatever pin you have selected away from Pin 1, repeat for the third Pin stacked. Double click the now exposed pin 10 and make visible. Repeat for Pin 12. Arrange the three pins as you wish and save. - Delete the 15 pin Kicad MAX-M8Q from your schematic and replace it with your 18 pin personal library MAX_M8Q then join pins 10, 12 & 15 to header pins.
- Finally, update your PCB from the Schematic.