I am making a project and Io got to a point where I have no way to test my code without actually soldering parts to my Teensy 4.0. I have to use the Audio Shield and an ssd1306 OLED together and because they both share the same pins(18 and 19) for i2c, I'm not sure if I can solder them together. Any answers?
If they both have different I2C addresses, then you can solder them both to the same pins. I have done this many times with a DS3231 and a OLED Display. If you like can’t solder them together then try using a breadboard