![]() If the contact bounces, the state stays stable until the NC contact of the switch closes. If one base is pulled to GND, the corresponding transistor switches off and switches on the other one. Now connect the NC and NO contact of the switch to the collectors of the transistor. BC847), couple each base to the collector of the other and give them pull-ups of 10k from the collectors to VCC, one pull-up resistor can already be in the mouse from the original circuit, then make the new one of the same value. *) Assuming, that the mouse button connects to ground when pressed and the “root” or “COM” contact of the switch is connected to GND: ![]() Two transistors and two resistors cost around 2,2ct. And it has some big advantages:Ģ.) It is cheap – at least a genuine arduino is more expensive than most mice. In this case, where one line of the switch is to be considered as input and output to the Flip-Flop, a simple latch made out of two cross coupled transistors (*) could do the trick. Posted in hardware, how-to Tagged arduino, Click, debounce, mouse, nano, repair Post navigationīasically that seems equivalent to the RS-Flip-Flop for contact debouncing. Speaking of gaming mice, we recently featured a way to add some extra functionality to your mouse - cheating optional - as well as how to stash a PC inside an old Logitech model. Due to the confined spaces, you’ll want to use the smallest Arduino you can find, some insulating tape to prevent any shorts, and care to prevent damaging the wires this process adds to the mouse when you cram it all back together.īefore you take ’s guide as dogma, the are a few caveats to this hack they are quick to point out that this won’t work on mice that share two pins between three buttons - without doing it the extra hard way, and that this might be trickier on gaming or other high-end mice, so attempt at your own peril. Instructables user ’s method cancels click malfunctions by latching the mouse’s controller switch trace to ‘on’ when pressed, keeping it there until the button normally closed contact closes again completely. But, for mice that double/triple-click, will release when dragging, or mis-click on release, this Arduino-based hack may be the good medicine you’re after. Standard fixes may not always last due to inferior build quality of the components, or when the microswitch won’t close at all. A mouse with malfunctioning buttons can be a frustrating to deal with - and usually a short leap to percussive maintenance.
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