Originally I was going to use 0Ohm resistors, but ultimately a piece of wire is a lot less expensive, they have a very low voltage drop and allow a handy place to clip a probe as well!
You can still replace any of the wire jumpers with current shunt resistors if you want, as the footprints I've made will accept standard 1/4W resistors. (For footprints with 3.81mm or 5.08mm pad spacing the resistors could be placed in the vertical orientation, for 7.68mm and larger footprints the resistors could be placed in the normal horizontal orientation).
Is it possible to make them all the same footprint, say the standard horizontally mounted 1/4W resistor footprint?
The standard 1/4W resistor footprint I use everywhere on the board has a 0.75mm/1.5mm hole/pad size and 7.62mm spacing between pads. For the jumper wires I'm using a 1mm/2mm hole/pad size and have 5 different footprints with pad spacing from 3.81mm to 15.24mm. 20AWG wire is about 0.8mm in diameter, so it needs a bigger hole.
Like I said, a normal 1/4W resistor will still fit just fine in the bigger hole if you want to go that route, though you might have to install it vertically any place I used the 3.81mm or 5.08mm pattern, which I've only had to do in a few spots.
If you're worried about having to use a different size drill when making the boards by hand, it shouldn't be that big of a deal, really, as there's only about 20 or so jumpers on the board.
Here's an example image I made showing all 5 sizes of the footprints I've got with 30mil traces running under and between them:
![](http://timb.us/Projects/Scope_Pong/Jumpers.png)
I'm nearly done connecting all the sections to the power bus and the 7.62mm footprint is the most common by far, with 5.08mm being used three places and 15.24mm being used one place.
Keep in mind that 0Ohm resistors aren't actually zero ohm. Carbon ones can be close to 1Ohm in some cases! Metal film ones can be 250mOhm or more. I'd highly recommend using a piece of at least 22AWG wire as the jumper to avoid a significant voltage drop on some of the more current hungry sections. (I will be including 20AWG jumpers in the kit. You can actually buy them pre-cut and reeled the same way resistors come, they're only a couple of cent and should save a good deal of time.)
![](https://www.eevblog.com/forum/projects/oscilloscope-pong-for-1-or-2-players/?action=dlattach;attach=313692;image)
![](https://www.eevblog.com/forum/projects/oscilloscope-pong-for-1-or-2-players/?action=dlattach;attach=313694;image)
Damn, that's looking hot! Can't wait to turn that into a PCB! :}