Electrical Engineering Stack Exchange is a question and answer site for electronics and electrical engineering professionals, students, and enthusiasts. It only takes a minute to sign up.
Sign up to join this community
I am working on a project where I used a shift register 74HC595N which has hidden GND and VCC pins in Eagle. So I used the invoke property as shown in the pics, and connected the VCC and GND to the +5V and GND of the Arduino board. This connects the two hidden pins of the shift register directly to the Arduino. but in the PCB design phase, both pins are connected to random pins. Is there a way I can connect them explicitly from the schematic?
I added the same object in eagle now too and it works fine here.
Maybe the 'random' pins are also connected ground for example. If the shift register is closer to a component that is also connected to ground you will see a yellow line (from the unrouted layer) to that component.
To check if this is the case you can use the show function on the board layout screen. (you can use this function by typing show in the text bar) Then click on the yellow unrouted line. everything that is sharing the same net name (GND in our example, will light up. You can now easily check if the arduino ground pins are lighting up. Also the name of the net is showed in the bottom left corner of the screen once you used the show function.
