WatchDuino

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WatchDuino

Postby Myndale » Wed May 07, 2014 11:48 am

Arduino in a watch form factor:

http://www.coconauts.net/projects/watchduino/

The schematic looks very familiar... ;)

https://bytebucket.org/rephus/watchduin ... ema_bb.png
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Re: WatchDuino

Postby DFX2KX » Thu May 08, 2014 1:05 am

That's... Almost identical, isn't it? Save for no SD card and USB controller?

Makes me wonder if you could shrink a gamebuino with the sd card and usb down to that size.
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Re: WatchDuino

Postby Drakker » Thu May 08, 2014 1:20 am

There is definitely room to shrink the Gamebuino... but the price would go up significantly. =)
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Re: WatchDuino

Postby adekto » Thu May 08, 2014 1:55 am

u can make gamebuino smaller but ur going to sacrifice battery life and its going to be harder to control without a dpad
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Re: WatchDuino

Postby DFX2KX » Sun May 11, 2014 2:27 pm

Drakker wrote:There is definitely room to shrink the Gamebuino... but the price would go up significantly. =)

Indeed. Multi-layer PCB, and all. I wonder if Gamebuino just uses a sensible schematic layout to begin with?
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Re: WatchDuino

Postby rodot » Mon May 12, 2014 6:21 am

You could easily shrink gamebuino using SMT buttons and replacing the ATmega328 with an ATmega32u4 (because it doesn't require an FT232RL for the USB port). You would also have to remove the expansion connectors and speaker (or move it somewhere else, and/or replace it with a piezo disk).

But reducing the screen's size would be the first step I guess. You could use a 0.96" OLED display... but because of their higher resolution you won't be able to feet a display buffer in the microcontroller's RAM :(
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Re: WatchDuino

Postby Drakker » Mon May 12, 2014 11:27 am

I'd say the screen is pretty much the only thing we wouldn't want to shrink...

Maybe this could be an interesting project for the future, a really slim Gamebuino. Same shape and screen as the current one, just, say, 1cm thick or less. If the Arduboy can do it... it should be possible with the Gamebuino itself. The "thick" version would be for developers and hardware tinkerers and the slim one without extension ports could be a portable gaming machine for those that only want to play Gamebuino games on the go.
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Re: WatchDuino

Postby rodot » Mon May 12, 2014 11:54 am

Actually this is already a "slim" Gamebuino, the first prototype was entirely through hole with 2 single sided PCB and 4 AA batteries :P
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Re: WatchDuino

Postby Drakker » Mon May 12, 2014 3:42 pm

Got any pictures? =)
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Re: WatchDuino

Postby rodot » Mon May 12, 2014 5:52 pm

Here you go:
front.jpg
front.jpg (82.35 KiB) Viewed 2027 times

back.jpg
back.jpg (79.28 KiB) Viewed 2027 times

etching.jpg
etching.jpg (110.81 KiB) Viewed 2027 times

PCB.jpg
PCB.jpg (64.08 KiB) Viewed 2027 times

assembled_PCB.jpg
assembled_PCB.jpg (74.63 KiB) Viewed 2027 times
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