>Don’t run data lines and power lines right next to each other (electric signals flow through a field surrounding the trace/wire, not in or on the metal itself)
Not true. The electrons certainly do travel within the copper. The movement of the electrons generates a magnetic field around the conductor, but the electricity does not "flow through a field surrounding the trace/wire". The electric power absolutely does flow through the metal itself.
>PCB pros avoid right angles for the same reason.
This is a myth except maybe in very rare cases. Most hobbyists aren't ever going to have a problem with right angle traces.
>Verify PCB traces with a multimeter before soldering components to it (or if it’s been assembled by the PCB manufacturer, verify everything before powering it on for the first time)
You should be sure that your design works before sending it to be assembled. If you designed the PCB with proper software that does analysis between the schematic and the PCB design, then there really shouldn't be any surprises that would require you to verify any PCB traces with a multimeter before soldering components. Sure you may have had it manufactured by a crap PCB company, but it's unlikely, PCBs have gotten really easy to make. Software like KiCad if used properly make it practically foolproof to design a PCB that matches the schematic.
Designing the schematic is another matter though, it's very easy for a noob to get that part completely wrong and testing PCB traces with a multimeter is not going to fix that.
>or if it’s been assembled by the PCB manufacturer, verify everything before powering it on for the first time
Not sure what that would accomplish. What are you going to test? Many components can't even be tested unless power is applied. Seems like you're suggesting superstition more than practical knowledge about hardware design and manufacture.
Not true. The electrons certainly do travel within the copper. The movement of the electrons generates a magnetic field around the conductor, but the electricity does not "flow through a field surrounding the trace/wire". The electric power absolutely does flow through the metal itself.
>PCB pros avoid right angles for the same reason.
This is a myth except maybe in very rare cases. Most hobbyists aren't ever going to have a problem with right angle traces.
https://www.nwengineeringllc.com/article/right-angle-pcb-tra...
>Verify PCB traces with a multimeter before soldering components to it (or if it’s been assembled by the PCB manufacturer, verify everything before powering it on for the first time)
You should be sure that your design works before sending it to be assembled. If you designed the PCB with proper software that does analysis between the schematic and the PCB design, then there really shouldn't be any surprises that would require you to verify any PCB traces with a multimeter before soldering components. Sure you may have had it manufactured by a crap PCB company, but it's unlikely, PCBs have gotten really easy to make. Software like KiCad if used properly make it practically foolproof to design a PCB that matches the schematic.
Designing the schematic is another matter though, it's very easy for a noob to get that part completely wrong and testing PCB traces with a multimeter is not going to fix that.
>or if it’s been assembled by the PCB manufacturer, verify everything before powering it on for the first time
Not sure what that would accomplish. What are you going to test? Many components can't even be tested unless power is applied. Seems like you're suggesting superstition more than practical knowledge about hardware design and manufacture.