Hi Gang,

Been a lurker for awhile but I am wondering about a circuit I am trying to make. It is basically a circuit off indestructables from mothflavour2 that I want to modify. It was originally to make a rapid fire left click mouse button but I thought I could make it work for automatically clicking the spacebar for me to not go afk from a game.

Here is my plan. Where i have spacebar will be the A and B contacts that are for spacebar and I will be using the circuit from a usb keyboard and just those two pins that press spacebar. I put a switch in the system to turn it off and on. Any help appreciated.

 

Welcome to the forum!
Emulating a spacebar press is not as simple as just applying a pulse from a 555 to a switch. Check out scancodes.

 

Darn, I was hoping to use this method for the spacebar and just have two wires like in my diagram that signal the spacebar on the keyboard

http://www.instructables.com/id/One-Key-Keyboard-Hack/step2/What-How/

 

Under a space bar is just a button...
What the keyboard sends to the computer when a button is pressed is not.

No reason you couldn't hack into the physical button under the spacebar.. Other than you being a cheater

 

What i mean is disregarding the membrane for the keyboard all together like this



http://forum.allaboutcircuits.com/threads/help-advice-with-555-timer-circuit.12533/

This guy has the kind of idea I would like to do, I just am not sure how to get there.

 

You could perhaps use the contacts of a reed relay, or an analogue switch such as a CD4066, to bridge the spacebar switch contacts.

 

If you have a common ground, you can probably use a transistor to switch it.

Bob

 

Hi,

Im not very electronic savy but I try to find out anything i can. I drew up another circuit but not sure where the one end marked with a ? should go. One end of keyboard wire to ground and one to the pin 3 of the 555 ic.

Any help would be awesome.

Terry

 

the keys are most likely not connected to ground, but are scanned, use an opto isolator connected to the output of the 555 timer. they scan keyboards to symplify the circuit. basicly scanning involves connecting the keys switches in coulums and rows each key is connected to a column and a row which give te keyboard chip its input.