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geekhack Marketplace => Great Finds => Topic started by: ander on Sun, 13 March 2016, 22:50:07

Title: Unused HE switches?
Post by: ander on Sun, 13 March 2016, 22:50:07

This probably isn't a "great" find, since it's $250 + shipping, but I thought it was pretty interesting:

SSL B Series Computer Keyboard (http://www.ebay.com/itm/SSL-B-Series-Computer-Keyboard-/331799529014)


(http://i.ebayimg.com/images/g/q74AAOSwo6lWLloC/s-l1600.jpg)


(http://i.ebayimg.com/images/g/ng8AAOSw5ZBWLlnt/s-l1600.jpg)


(http://i.ebayimg.com/images/g/gmYAAOSw~bFWLln3/s-l1600.jpg)


Feel free to correct me, but those look like unused Hall Effect switches to me.

Title: Re: Unused HE switches?
Post by: pr0ximity on Mon, 14 March 2016, 03:19:46

I *think* most HE switches have four pins, but I could be wrong. The underside of that board seems to indicate each switch has only two pins.

Title: Re: Unused HE switches?
Post by: chyros on Mon, 14 March 2016, 04:09:41

Maybe it's MS MR?

Title: Re: Unused HE switches?
Post by: xmagusx on Fri, 18 March 2016, 10:26:29

Quote from: pr0ximity on Mon, 14 March 2016, 03:19:46

I *think* most HE switches have four pins, but I could be wrong. The underside of that board seems to indicate each switch has only two pins.

A Hall Effect switch will need at least three pins. VCC, ground, and output. Frequently such switches will have redundant output lines to bring the total up to four pins. This does not appear to be a Hall Effect board, unfortunately.

Title: Re: Unused HE switches?
Post by: ander on Sat, 19 March 2016, 21:15:52

Oh well, at least I got the effect of them being Hall Effect.