I want to use 2 arcade buttons as the same button and being read by the same pin.
What i am trying is just connect both burttons to GND and +5 and the output of both
to my arduino in the same pin. The problem is that doing this the only thing i get when
i press any button is a short circuit and what i whant is read HIGH when any of those
is pressed (or both at same time). i don't wanna know wich one is pressed. just know
when any or both are pressed.
Is this a standard 2-pin normally-open switch? If so, I don't understand how you are connecting it to ground, +5V, and an input pin (pull-up/down resistor maybe?) It sounds quite likely that you are indeed causing a short.
A schematic or even a simple sketch of your hookup will be the only way to resolve this properly.
Hi! The buttons are the arcade buttons like the atached picture...
what i am doing is giving both buttons +5 and GND and then tie the outs together and insert it in
my arduino. Pressing any button just shorts the circuit and my arduino resets.
I just want to get a high reading when any of the button is pressed.
thanks in advance!
First, you have to set the pin as Input (high impedance). For most controllers that is the default status.
The connection in the picture:
case 1 : No button is pressed. Arduino pin is at 5 V (no voltage drop on resistor since the current has no path to flow).
case 2: 1 button is pressed. Arduino pin is at 0 V . There is a 5V voltage drop on resistor. The current flows from VDD to ground. At a 10kohm resistor you have 0.5 mA.
case 3: 2 buttons are pressed. Arduino pin is at 0 V . There is no voltage drop on the resistor. (no closed circuit).
If you put no resistor/low resistance resistor then you make a short circuit and bad things might happen. with 10k - 50 k resistance resistor you are safe as long as the Arduino Pin is set as high impedance (input pin)
Hi Calin. I didn't used any resistor.
I'm not a home but if you tell me how would you do this (wich resistor, where and wich pin
would you use) i can test it and let you know the results.
eldany, check CalinTamaian's post where he posted a schematic. Copy that and you will be fine, all the info you need is in his post there. Any un-used digital input pin will be fine. Like has been stated, without a resistor, your are directly hooking 5V to GND when one switch is closed, which is the short circuit you are seeing.
