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A project log for The Square Inch Project

A contest to create awesome, useful square inch boards. Entries are closed.

alphaninjaalpha_ninja • 09/29/2015 at 00:10•237 Comments

If you'd like to enter, please post a link to your project's page as a comment on this project log!

Some reminders:
You don't need to have your PCB's schematics or circuit design finished to enter.
Each user can enter up to 10 PCBs. [One PCB per project.]
Your PCB can be smaller than 1x1".

Entered projects are listed here:

https://hackaday.io/list/7909-square-inch-project-entrants

ENTRIES ARE CLOSED.
Previous log

How to Enter

09/28/2015 at 23:53 • 2 comments
Next log

The Two-Week Mark

11/10/2015 at 14:07 • 7 comments

Discussions

Jose Ignacio Romero wrote 11/20/2015 at 18:06 • point

I'd like to enter mine! PCBs are still not ready but the circuit works and I'll have them for december :) https://hackaday.io/project/8467-low-power-continuity-tester

  Are you sure? yes | no

alpha_ninja wrote 11/20/2015 at 19:08 • point

That's fine. I'll add you!

  Are you sure? yes | no

Jose Ignacio Romero wrote 11/21/2015 at 00:19 • point

thanks!

  Are you sure? yes | no

JRodrigo wrote 11/19/2015 at 17:31 • point

It's my small project :) https://hackaday.io/project/8494-logic-block

  Are you sure? yes | no

alpha_ninja wrote 11/19/2015 at 18:23 • point

Hey, as long as it isn't too big ;)

  Are you sure? yes | no

alpha_ninja wrote 11/19/2015 at 18:26 • point

However, there's a caveat: Technically, you can only enter one PCB (as defined in the rules) per project. I've added it for now, but you'd technically need to have a separate project for each logic block you want to enter (UNLESS you manage to fit multiple into a 1x1 inch space...)

  Are you sure? yes | no

JRodrigo wrote 11/19/2015 at 23:51 • point

I misinterpreted the rules, because i read "Each user can enter up to 10 PCBs." but I've seen that in the rules says 10 projects. Sorry for that!

I think it's not fair or "logical" =P create a 10 differents projects for the same thing. 

  Are you sure? yes | no

alpha_ninja wrote 11/20/2015 at 00:00 • point

Well, the idea is that you're constrained in that way. While I see your point, changing the rules at this point (especially since there's one week left to enter) would be a bit rash. In addition, the idea of this contest is that the project's functionality can be kept entirely within the 1x1 inch space, and this principle could be sidestepped if you're allowed to have multiple 1x1 inch PCBs per project.

If you'd like to participate anyway, I'd like to recommend that you enter a single breakout and put a link to a github repo which contains all of the different breakout boards.

I've clarified this rule above.

  Are you sure? yes | no

JRodrigo wrote 11/20/2015 at 01:21 • point

You are entirely right in this! ok for now I just participate with one of breakout boards, but i will add more in the future =)

  Are you sure? yes | no

alpha_ninja wrote 11/19/2015 at 18:31 • point

Actually, here's an idea: All of these gates have the same pinout for V+ and GND. Why not just have an universal breakout for 14-pin 7400 series logic gates? Users can label it themselves with a permanent marker that way.

  Are you sure? yes | no

K.C. Lee wrote 11/19/2015 at 18:46 • point

I would have gone the extra step of using a tiny CPLD with a jumper block to select the different logic chips it emulate.  The user can also choose to reprogram and use the CPLD for more complex functions.

  Are you sure? yes | no

alpha_ninja wrote 11/19/2015 at 18:57 • point

That would be really nice, too :D — it might be worth creating a separate project for this?

  Are you sure? yes | no

JRodrigo wrote 11/19/2015 at 23:54 • point

It's a really good idea!! maybe in the future =)

The goal for now is make small and low-cost boards ^^

  Are you sure? yes | no

Jenny List wrote 11/18/2015 at 18:05 • point

I'm a little late to the party, so what you see here represents only a day's work:

HF receive converter for RTL-SDRs and similar

https://hackaday.io/project/8486-hf-receive-converter-for-rtl-sdrs-and-similar

  Are you sure? yes | no

alpha_ninja wrote 11/18/2015 at 18:10 • point

That's absolutely no problem. Adding your project :)

  Are you sure? yes | no

Jenny List wrote 11/18/2015 at 18:29 • point

Thank you!

  Are you sure? yes | no

Eric Hertz wrote 11/18/2015 at 06:18 • point

It'll be a far-stretch, but who knows :)

https://hackaday.io/project/8483-motorator-self-replicating-pcb-router-board

  Are you sure? yes | no

alpha_ninja wrote 11/18/2015 at 13:48 • point

if this works, it will be awesome :D Adding you

  Are you sure? yes | no

Eric Hertz wrote 11/18/2015 at 16:03 • point

:)

  Are you sure? yes | no

alpha_ninja wrote 11/18/2015 at 17:48 • point

:D

  Are you sure? yes | no

Alex wrote 11/17/2015 at 19:07 • point

so would like to enter also with this:

https://hackaday.io/project/8450

  Are you sure? yes | no

alpha_ninja wrote 11/18/2015 at 01:06 • point

Adding it :)

  Are you sure? yes | no

alpha_ninja wrote 11/17/2015 at 04:54 • point

I can't access that page—is it set to private?

  Are you sure? yes | no

Alex wrote 11/17/2015 at 05:05 • point

It was earlier, I have updated it now, I guess I didn't save the settings the first time around.

  Are you sure? yes | no

alpha_ninja wrote 11/17/2015 at 05:07 • point

Nice, added :)

  Are you sure? yes | no

alpha_ninja wrote 11/16/2015 at 19:52 • point

Very nice, added this.

  Are you sure? yes | no

HappyFox wrote 11/14/2015 at 19:20 • point

In the rules it says :"The total printed circuit boards required for a single copy of an entry must fit completely within a 1 inch by 1 inch square." 

Does this mean the design, giving space for the kerf needed to cut the board ( 100 mil in oshparks case. ) must fit in a square inch? Or the final boards must fit within 1 inch ? 

I can swing it either way, but I am wondering if I am making it hard on myself. 

Thanks!

  Are you sure? yes | no

alpha_ninja wrote 11/14/2015 at 20:42 • point

Nope, it doesn't. However, panelization must occur within the 1 square inch, no external supports allowed (see #Breadboard Widgets for what I mean)

Here's a diagram:

https://cdn.hackaday.io/images/8348881447533736757.png

  Are you sure? yes | no

alpha_ninja wrote 11/13/2015 at 16:15 • point

You're in!

  Are you sure? yes | no

Patrick Lloyd wrote 11/13/2015 at 05:38 • point

Yeehaw! Such a nice round number. Thanks!

  Are you sure? yes | no

K.C. Lee wrote 11/13/2015 at 02:40 • point

My 2nd entry:  very seasonal entry: https://hackaday.io/project/8416-charleplex-xmas-tree

messy wiring special

  Are you sure? yes | no

alpha_ninja wrote 11/13/2015 at 04:33 • point

blinky, blinky.
Added!

  Are you sure? yes | no

alpha_ninja wrote 11/13/2015 at 00:03 • point

You're in :D

  Are you sure? yes | no

alpha_ninja wrote 11/13/2015 at 00:02 • point

Added.

  Are you sure? yes | no

alpha_ninja wrote 11/13/2015 at 00:03 • point

Oh, also you're entrant # 50!

  Are you sure? yes | no

alpha_ninja wrote 11/12/2015 at 05:41 • point

Added!

  Are you sure? yes | no

nGoline wrote 11/11/2015 at 17:15 • point

I would like to submit my project. Its an ESP8266 board powered from mains (80-240V) with a relay. It can turn on/off (specially) light bulbs up to 200W.

https://hackaday.io/project/8399-nosier

  Are you sure? yes | no

alpha_ninja wrote 11/11/2015 at 23:28 • point

Very nice, entered! Make sure the ESP doesn't overlap over that barrel connector. If you want, it's OK if it hangs over off the board.

  Are you sure? yes | no

Ryan Davis wrote 11/11/2015 at 00:21 • point

I would like to enter my project page. Please forgive the lack of info, I am still working. However, when I'm done, I think it'll be really cool! https://hackaday.io/project/8388

  Are you sure? yes | no

alpha_ninja wrote 11/11/2015 at 00:27 • point

That's no problem; no info is actually required for the first deadline ;)

  Are you sure? yes | no

Ryan Davis wrote 11/11/2015 at 00:34 • point

Also, a question: Does my board have to have 1 sq. inch total board area, or fit within a 1 inch square? Example: Can I make a PCB whose dimensions are 2in by .5in? EDIT: Saving you the trouble; I read the thread below mine.

  Are you sure? yes | no

alpha_ninja wrote 11/11/2015 at 02:03 • point

No, you can't. From the rules:

"The total printed circuit boards required for a single copy of an entry
must fit completely within a 1 inch by 1 inch square. (It may also be
smaller.)"

  Are you sure? yes | no

James Cannan wrote 11/09/2015 at 22:54 • point

I would like to submit my project for a miniature and wearable development platform. Every module is smaller than 1 square inch:  https://hackaday.io/project/7671-miniwear-diy-miniature-wearable-electronics

  Are you sure? yes | no

alpha_ninja wrote 11/09/2015 at 23:45 • point

As stated in the rules, "The total printed circuit boards required for a single copy of an entry must fit completely within a 1 inch by 1 inch square. (It may also be smaller.)" [panelized designs must also fit within a 1x1 inch square.]

In other words, each project may only use 1 square inch of PCB space. In addition, each board must be shown to fulfill its purpose.

Nevertheless, I wish you good luck with your project!

  Are you sure? yes | no

James Cannan wrote 11/09/2015 at 23:50 • point

You can stack them on top of each other, so technically they could all fit inside the 1x1 square inch :) 

  Are you sure? yes | no

alpha_ninja wrote 11/09/2015 at 23:53 • point

It's not about physical size, it's about PCB space. Sorry :(

  Are you sure? yes | no

James Cannan wrote 11/10/2015 at 00:01 • point

No problem.... thanks for taking a look :)

  Are you sure? yes | no

alpha_ninja wrote 11/10/2015 at 00:02 • point

Good luck anyway!

  Are you sure? yes | no

CaptMcAllister wrote 11/07/2015 at 20:06 • point

Thanks for the heads-up.  Could you please enter me? https://hackaday.io/project/7077-rfid-air-pressure-sensor

  Are you sure? yes | no

alpha_ninja wrote 11/08/2015 at 03:50 • point

Added you :) 4 projects to go to hit the 50 mark!

  Are you sure? yes | no

Yann Guidon / YGDES wrote 11/07/2015 at 16:36 • point

Hello, @al1 does a great job at https://hackaday.io/project/8270-pictil   and the dimensions fit :-)

  Are you sure? yes | no

Alex wrote 11/07/2015 at 16:49 • point

Good idea to enter! It is much smaller than a square inch.

  Are you sure? yes | no

alpha_ninja wrote 11/07/2015 at 17:06 • point

Great, it's on the list :)

  Are you sure? yes | no

alpha_ninja wrote 11/06/2015 at 23:43 • point

You're in :D

  Are you sure? yes | no

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