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Building a very simple joystick interface for DE1   Message List  
Reply | Forward Message #219 of 321 |
Re: [minimigtg68] Building a very simple joystick interface for DE1

gaula92 wrote:

> Notice no resistors seem to be needed. Will it work?

No.

The joystick swicthes are all floating when open, and when closed are
shorted to ground. So to read the inputs you need pull-up resistors on each
of the lines. They're not there just for fun...

Regards,

--
| Mark McDougall | "Electrical Engineers do it
| <http://members.iinet.net.au/~msmcdoug> | with less resistance!"



Mon Aug 31, 2009 12:57 pm

tcdevelop
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Message #219 of 321 |
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I've been looking at Tobiflexx's schematics for the add-on board and it seems a bit out of reach for my null soldering abilities. So I've been thinking if this...
gaula92
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Aug 31, 2009
11:22 am

... No. The joystick swicthes are all floating when open, and when closed are shorted to ground. So to read the inputs you need pull-up resistors on each of...
Mark McDougall
tcdevelop
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Aug 31, 2009
12:57 pm
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