Hi, guys!!! I´m a beginner in KiCad and I'm trying to make a circuit (instrumentation amplifier), but when I run the ERC in order to create a Netlist that would allows me to make the PCB or even in order to simulate my circuit with Spice, I have 4 problems
The ERC gives me 4 mistakes. In the first and second, it has to do with the input of my circuit, what I'm trying to do is to set them as an input but apparently I was mistaken set them with the +12V and -12V respectively component, so I changed one of them to Vcc but the mistake is still the same. The third mistake occurs in the ground that is connected to the resistance R8. Finally, the fourth mistake occurs in the V- entrance of the OPAMP U1, that i what to power it with -12V. I cannot explain this last mistake because the other OPAMP U2 has no mistakes and I did the same connection.
PLEASE HELP ME
THANKS
Notes:
*I saw that using a PWR_FLAG you could set the pins as Outputs but in my case those pins are 12V inputs.
*Every single connection is well-connected, I already connected them many times.
*Sorry if my english level isn´t good enough, it is not my native language.