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Rockbox mail archiveSubject: Re: button?Re: button?
From: Minuk Choi <Choi.Minuk_at_verizon.net>
Date: Mon, 12 Jan 2004 23:03:38 -0500 well, so far, my idea is to solder wires on the 4 pins and have the connection made by the button up top. I'm not too skilled in soldering... and I want to avoid trying to remove the switches... and end up removing an IC or something ----- Original Message ----- From: "Nathan" <nvpryor_at_comcast.net> To: <rockbox_at_cool.haxx.se> Sent: Monday, January 12, 2004 10:03 AM Subject: RE: button? > <html><pre> > --| |-- > |_/ _| > --| |-- > (ASCII push button switch) > </pre></html> > > I believe the main purpose for having 4 leads (apart from being stronger), is it allows you to make a matrix keypad on a single-sided PC board without using alot of jumpers (since they're built into the switches) to hop over the perpendicular traces. So two wires for each switch should be fine. A better way is find the configuration of the switches and you may be able to get away with only having either one wire per button plus a common, or the horizontal and vertical lines of a matrix (total is usually twice the square root of the button count). > > By the way if you're planning to remove the original switches from the board be aware that it may either rely on the jumpers or may only have one pin connected. > > >>>>>>begin origonal message snipit<<<<<< > If you've seen the buttons on the circuit board, they look like the following > > x1 x2 > O > x3 x4 > > where "O" is the button itself, and x1, x2, x3, and x4 indicate soldered points. > > Now, from trial and error, it seems like x1 + x4 or x2 + x3 forms the connection(i.e. button has been depressed). The thing is... is there a reason that there are 4 points? Seems like 2 diagonal points is sufficient(it works for power button, arrow buttons), but is there a reason why it's four points? > >>>>>>end origonal message snipit<<<<<< > > Received on 2004-01-13 Page template was last modified "Tue Sep 7 00:00:02 2021" The Rockbox Crew -- Privacy Policy |