Enter here!

Furkan Çetin wrote 10/08/2015 at 11:14

My apple of eye. Is "Eyeduino" a better name? :) Just 18mm x 18mm!

https://hackaday.io/project/7989-pointduino-mini

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alpha_ninja wrote 10/08/2015 at 13:33

Beautiful! One small tip: It would look even better if all the vias would be hidden under the µc...

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FrazzledBadger wrote 10/08/2015 at 05:21

Another of my idle musings:

https://hackaday.io/project/6335-wedding-led-doodads

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alpha_ninja wrote 10/08/2015 at 05:27

The doodaddery is strong with this one.
I've added it :)

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Luc wrote 10/08/2015 at 01:17

https://hackaday.io/project/4819-simple-electronic-compass

I had planned to make it small, but I'll be making it fit the 1"x1". Still in progress.

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alpha_ninja wrote 10/08/2015 at 02:12

Good luck—I've added you!

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Christoph wrote 10/07/2015 at 20:59

Nothing too fancy but fits in 1x1:

https://hackaday.io/project/4277-stm32f030f4p6-breakout-board

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alpha_ninja wrote 10/07/2015 at 21:09

Added!

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zakqwy wrote 10/07/2015 at 20:46

Oh, uh, thanks. Just saw this log. Ignore my previous request, I'll come up with a project first :-/

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alpha_ninja wrote 10/07/2015 at 20:47

Sounds good :)

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FrazzledBadger wrote 10/07/2015 at 06:56

https://hackaday.io/project/7974-microethernet

Mini Webserver

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alpha_ninja wrote 10/07/2015 at 13:32

You're in :)

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Daniel wrote 10/06/2015 at 06:47

https://hackaday.io/project/7961-micro-word-clock

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alpha_ninja wrote 10/06/2015 at 13:45

Nice, I added you

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Daniel wrote 10/06/2015 at 14:00

Thanks!

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rossumur wrote 10/06/2015 at 00:37

https://hackaday.io/project/7666-arduinocade

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alpha_ninja wrote 10/06/2015 at 00:44

Added!

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jeff wrote 10/05/2015 at 04:19

https://hackaday.io/project/7947-quadcopter-in-one-inch

tiny flying machine

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alpha_ninja wrote 10/05/2015 at 04:37

I'll add you. Double-check those pads for the QFP, though!

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jeff wrote 10/06/2015 at 23:22

thanks.

QFN actually. no pins.

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alpha_ninja wrote 10/06/2015 at 23:35

Ah, ok—were they okay? they looked quite cramped.

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danjovic wrote 10/05/2015 at 02:08

https://hackaday.io/project/7944-at26-chuck

Adapter for playing Atari 2600 with Wii Nunchuck. Let's try a through hole design this time.

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alpha_ninja wrote 10/05/2015 at 02:30

Added you :)

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danjovic wrote 10/04/2015 at 21:29

https://hackaday.io/project/7941-avercade

Customisable USB adapter for arcade controls based on AVR wit V-USB and USBASPLoader.

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alpha_ninja wrote 10/05/2015 at 01:08

Added!

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f.lazar wrote 10/04/2015 at 14:13

https://hackaday.io/project/7932-trackthor

Not one, but 3 boards under 1 inch. Actually one in 26mm long not 25.4 because of the chip dimension. But i can cut easy 0.6 and have the top chip bigger then the actual pcb. So, am i disqualified?

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alpha_ninja wrote 10/04/2015 at 14:35

You're not compliant with the rules because each project is permitted no more than 1" of PCB space (panelized!) What you could do is have sd card reader and battery holder be separate modules (that are usable on their own, even with other devboards) and enter them separately

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f.lazar wrote 10/04/2015 at 14:50

correct, but then what's the fun? that would be 3 pcb's with no individual functionality that can be of interest. They work as whole and that is the fun: 3 pcb's under 1 inch each, can give a fun device within a cube inch of PCB's. :-) Thanks anyway.

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alpha_ninja wrote 10/04/2015 at 14:55

That's not compliant with the rules though, sorry. I like the cube-inch idea though, we could do that the next time around.

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WallaceIT wrote 10/03/2015 at 15:57

https://hackaday.io/project/7921-usbreadboardit

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alpha_ninja wrote 10/04/2015 at 03:23

added!

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Antti Lukats wrote 10/03/2015 at 12:34

https://hackaday.io/project/7920-dipsy-starter

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alpha_ninja wrote 10/03/2015 at 15:00

Not sure you saw the other comment: projects can be smaller than 1x1 inch too!

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alpha_ninja wrote 10/03/2015 at 15:04

It's on the list!

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Antti Lukats wrote 10/03/2015 at 12:19

https://hackaday.io/project/6623-xmod-usb-cpld-kit-or-interface

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alpha_ninja wrote 10/03/2015 at 15:04

Added

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Piotr Esden-Tempski wrote 10/03/2015 at 06:40

Hi I would like to submit the Lisa/S UAV autopilot to the contest.

http://wiki.paparazziuav.org/wiki/Lisa/S

It is a 20mm x 20mm (0.619sq/inch) fully autonomy capable autopilot. Even when you add on the 2.4GHz RC control and telemetry module (CyRF) it is still less than an inch of surface area: 0.852sq/inch :)

Here also the link with some better photos:

http://1bitsquared.com/collections/autopilots/products/lisa-s

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alpha_ninja wrote 10/03/2015 at 06:46

Piotr,
Could you create a hackaday.io project page for your project so I can add it? Thanks!

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Piotr Esden-Tempski wrote 10/03/2015 at 06:59

Just did that: https://hackaday.io/project/7918-lisas-autopilot

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alpha_ninja wrote 10/03/2015 at 07:20

Added you to the list!

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Philip wrote 10/03/2015 at 05:45

This is such a cool contest. Did you create it just for me? I would like to enter my OSHChip_V1.0 project.

https://hackaday.io/project/7212-oshchip-v10

At .350" x .780" it comes in at .273 square inches, so almost 4 copies per square inch. Can I enter 4 times :-)

It is a Cortex-M0 processor, 32K RAM, 256K Flash, assorted peripherals and Bluetooth Low Energy radio (nRF51822) packaged as a 16 pin DIP.

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alpha_ninja wrote 10/03/2015 at 05:59

Now that is some precise documentation. I'll add you!

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Yann Guidon / YGDES wrote 10/01/2015 at 15:59

Not my work but what about #DIPSY?

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alpha_ninja wrote 10/01/2015 at 16:42

If @antti.lukats wants to enter...

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Antti Lukats wrote 10/01/2015 at 17:44

https://hackaday.io/project/6592-dipsy/log/26069-even-smaller

WAAAY TOOO SMAAALL

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alpha_ninja wrote 10/01/2015 at 18:11

There's no minimum size.

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Cedric Honnet wrote 10/01/2015 at 13:40

Check out the Twiz, it's a 1 inch square IMU (9 degree of freedom) that sends data over BlueTooth (Low Energy):

hackaday.io/project/7121-twiz

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alpha_ninja wrote 10/01/2015 at 14:04

I've added it!

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Cedric Honnet wrote 10/02/2015 at 11:25

Thanks ;)

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matseng wrote 10/01/2015 at 06:06

Submitting my entry to this contest - HIZ , a Human/Infected/Zombie multiplayer game inspired by a recent post on the HAD blog.
https://hackaday.io/project/7900-hiz

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alpha_ninja wrote 10/01/2015 at 13:07

I'll add you. Just so you know, you can make the board smaller than 1x1".

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matseng wrote 10/01/2015 at 14:15

Then I'll have to change the cr2032 into into a cr1220.... Hmm... yes. maybe that. But the battery lifetime will be severely affected.

But it would be rather cool to fit 9 pcs of the design onto a cheap 5x5cm pcb.

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alpha_ninja wrote 10/01/2015 at 16:41

You don't have to! If you would, maybe you could have two stacked? I think I remember some coin cell battery holders that did that. I was just pointing it out since the front had a lot of unused space.

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Hacker404 wrote 10/04/2015 at 08:21

I bought some 'super capacitors' or 'gold capacitors' the other day to replace a button cell. I didn't do the math as to how long a charge would compare because my reasoning was reliability. A one Farad (1F) super capacitor is quite small.

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matseng wrote 10/04/2015 at 13:28

I think you might want to do the math anyways....

If I remember correctly a 1F 2.5 volt capacitor can hold just a bit over 1 Joule of energy. A bog standard CR2032 is about 1000J if discharged carefully.

That is three orders of magnitude in difference!

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Hacker404 wrote 10/04/2015 at 19:37

How are you doing the math? I am using a 5v 1F cap - charging to 3v and then discharging to 2v and I get 277mAH for the capacitor when a button cell like CR2032 is about 225mAH.

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matseng wrote 10/05/2015 at 07:08

I didn't do the math. :-) I just picked rule-of-thumb values out of the top of my head. But let's do the maths and see...

Energy in a cap in Joules is 0.5*C(V2)

So you capacitor charged to 3 volts is holding in total 0.5*1*(3*3)=4.5 J if discharged all the way down to zero volts. You are only discharging down to 2 volts so there will be less.

So let's approximate that by taking the energy at 2 volts in the cap can subtracting that from 4.5J. 0.5*1*(2*2)=2J 4.5J-2J = 2.5 Joules extracted from a 1F cap during discharge from 3 volts down to 2 volts.

Ok, so let's look at the energy in a CR2032. 1 Joule is 1 Watt during 1 Second. As you said a CR2032 is about 225mAh and at 3 volts that will give us 0.225*3=0.675Wh. Multiply this by 3600 to get down to seconds and you'll end up with 0.675*3600=2430 Ws = 2430 Joules.

2.5J vs 2430J is almost exactly three orders of magnitude....

So.... How did you measure the 277mAh for your cap? Are you sure it's not 277 miliamp seconds?

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Hacker404 wrote 10/05/2015 at 08:04

I used coulombs and I am still looking for where I went wrong.

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