I need a small PCB designed - and I’m having some trouble getting a jump start on it - I know some folks on here (I’m looking at you @Ashley_M_Kirchner_No and @Benjamin_Greenwald ) do your own PCB’s.
(Short version, I want a PCB about the size of a teensy 3, that gives me 8 sets of 3 pin jumpers w/power, ground, and each set wired to one of 8 pins on the teensy 3, as well as power/ground connection - the routing seems like it’d be a bastard - first bit I’d need is a tool that I can use to do the layout, I suspect this is going to need/want to at least have traces on both sides of the board)
Tool: EagleCAD
I take it you want to use a Teensy platform then (a Cortex-M4)?
Hey. So you essentially want a “break-out” board for the Teensy3? I can take a shot at it - should be a pretty simple task.
BTW have you seen this board: https://www.pjrc.com/store/octo28_adaptor.html
Is that the kind of thing you had in mind, but with pin headers and VCC?
@Ashley_M_Kirchner_No at least for a couple of particular projects.
@Eran_Rundstein I have seen that board, however I don’t want the RJ45 breakouts (I will, though, be using those boards for a couple of larger projects). This is for much smaller environments, where I’d rather use 3 wire servo cables (hence the wanting pins that I can plug into).
Okay. I hope to have time to do this tonight. Do you want it to be the same pins on the Teensy3.1 as the ones used by the Octo adapter?
Yeah - ideally, if the pin order can line up to Octo’s pin order (2, 14, 7, 8, 6, 20, 21, 5) - that’d be great, otherwise I can label the order that lines up to the pin ordering.
(I’m also hoping to eventually be able to do stuff like this on my own, this seemed like a simple project to start with - but the first tool I found failed wildly 
Hardware shouldn’t be too hard, the schematics are available. The HalfKay bootloader however …
Yeah, HalfKay bootloader is proprietary so you wouldn’t be able to get it anywhere. It’s also protected by lock bits, preventing you from dumping it from an existing Teensy. You may be stuck there @Daniel_Garcia …
@Ashley_M_Kirchner_No I think @Daniel_Garcia is trying to make a breakout board and mount a Teensy on top of it, not to re-create the Teensy board… (Correct me if I’m wrong, of course)
I was going to amend my post, but you were too fast. Yes, creating a breakout is even easier to do.
It’s just a breakout board, I poked around with eagle in and out of runs this afternoon and I think i have something that’s a bit ugly text-wise, but appears to work wiring wise
Give me a bit, I need to finish this T.A.R.D.I.S. design layout then I’ll tackle this breakout. Do you have any specific size constraints and/or orientation of the block of pins? (in other words, how small do you want this to be?)
I spent some time playing with eagle and got a basic breakout board that appeared workable - @Eran_Rundstein made some changes to it/recommendations, that I’ll look at after lunch/work.
My mistake was always skipping the schematic and trying to go straight to board
Eh no, always schematic first. If you want me to look at it, I’m happy to. If you already have schematic/board files, send them to me and I’ll play with them.
Now it’s just waiting for oshpark - 2 week turnaround? I can wait. Sure, really.
(Open to recs for quick turnaround, but still fairly inexpensive pcb suppliers)
Good luck. I’ve had only good experiences with them
And they’re pretty fast compared to other cheap alternatives 
Yeah, I do mine in Shenzhen, 10 for $9.90 and if they’re small enough I can tile them up to 5 times, so the same amount of money gets me a lot more. I generally also pay for DHL shipping (up to $30) and get stuff back 7 to 9 business days later. Not for the faint of heart …
@Daniel_Garcia you said the tool “failed wildly”, if you are talking about automatic routing of the PCB tracks, I don’t know of any package, including the high end stuff, that gets that right. You have to do that by hand.