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Cute -- BUT!
Etmax   3/4/2014 8:03:44 AM
Novel concept, but not really able to survive an ESD event of which there will be many.

I remember building a Sinclair ZX81 look-alike in the early 80's and while writing programs it would periodically crash.

It turned out is was the ESD zaps on the keyboard which was a printed mylar/alu laminate, and more rugged than this, yet it had problems.

Caleb Kraft
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Re: Cute -- BUT!
Caleb Kraft   3/4/2014 1:18:18 PM
I am quite curious if ESD has much effect on this. I know the capacitive buttons are a bit sensitive, but I wonder if the system as a whole gets messed up.

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Re: Cute -- BUT!
bateskecom   3/4/2014 5:05:02 PM

Kevin Bates here, maker of the Arduboy! Thank you so much for covering this Caleb, I enjoyed your previous writing at your old outlet!

The microcontroller has very good built in protections on the input pins. It is surprisingly rugged. I have kept it in my wallet for a week now without any problems.

In fact I will probably post a video of me rubbing it on a carpet or some such thing. I'm interested to see how far it you can push your luck.

On the more reasonable side of things, it's probably a good idea to put some polyamide tape or some other kind of insulating material on the back of the card. I have plans to offer vinyl stickers with different designs and of course also the files you need to make stickers of your own!

Max The Magnificent
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Re: Cute -- BUT!
Max The Magnificent   3/4/2014 5:48:14 PM
@Kevin: I LOVE it -- I want one!!! Are you planning on launching a Kickstarter project to crowd-fund this? EE Times blogger Duane Benson and I are in the process of launching our own Kickstarter project -- email me at max@CliveMaxfield.com if you have any questions.

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Re: Cute -- BUT!
bateskecom   3/4/2014 7:32:11 PM
Yes, hopefully a kickstarter in the next few weeks. I am trying very hard to find a manufactruer to mass-produce these. It will mean I don't have to limit production of assembled units and the overall price will likley go down. But no promises, this board has to be hand assembled so I've already had a board house decline to bid.

Yes I think I recieved your email! Keep in touch!

As data rates begin to move beyond 25 Gbps channels, new problems arise. Getting to 50 Gbps channels might not be possible with the traditional NRZ (2-level) signaling. PAM4 lets data rates double with only a small increase in channel bandwidth by sending two bits per symbol. But, it brings new measurement and analysis problems. Signal integrity sage Ransom Stephens will explain how PAM4 differs from NRZ and what to expect in design, measurement, and signal analysis.

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