Hi,
So I've just started building stuff with hardware coming from a software background. My plan is to build a device that works like a keyboard for the computer it's connected to, but is a set of 4-8 buttons (yet to be decided) where each button might be pressed up to 3 times per second, and they might be pressed at the same time. Google suggested the Teensy2++ and thus I have a few questions about it
a) would a teensy be able to handle 8 simultaneous key presses?
b) could i use a common ground for the buttons? I assume I would have to connect diodes in some way for that to work?
c) a keyboard matrix would need three wires per switch, right? Row, col and ground? Would I need a keyboard matrix for 8 buttons or could I get away with just 2 wires per button by connecting each to its own positive pin and a common ground?
d) would it work with 10-20m cable between the teensy and each button? I'm still looking into what cables and connectors I could use, but as a sound technician I'm thinking about using what I have: audio cables and mono phono connectors (6.3mm)
e) would USB power be enough?
What do you think? Thanks in previous! And I really hope this isn't the completely wrong place to ask! (also posted on r/teensy)
So I've just started building stuff with hardware coming from a software background. My plan is to build a device that works like a keyboard for the computer it's connected to, but is a set of 4-8 buttons (yet to be decided) where each button might be pressed up to 3 times per second, and they might be pressed at the same time. Google suggested the Teensy2++ and thus I have a few questions about it
a) would a teensy be able to handle 8 simultaneous key presses?
b) could i use a common ground for the buttons? I assume I would have to connect diodes in some way for that to work?
c) a keyboard matrix would need three wires per switch, right? Row, col and ground? Would I need a keyboard matrix for 8 buttons or could I get away with just 2 wires per button by connecting each to its own positive pin and a common ground?
d) would it work with 10-20m cable between the teensy and each button? I'm still looking into what cables and connectors I could use, but as a sound technician I'm thinking about using what I have: audio cables and mono phono connectors (6.3mm)
e) would USB power be enough?
What do you think? Thanks in previous! And I really hope this isn't the completely wrong place to ask! (also posted on r/teensy)
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