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2k1Toaster · 09-19-2007, 10:57 AM

Quote: Originally Posted by durwood

I know it could register on a digital input if the theshold is high enough to tell if it's high not low, but the problem is digital input are typically held high via a pull-up resistor just like how a USB gamepad is setup. That's what I was kind of wondering.

Actually the digital ins have 1 pin go to the chip and 1 pin is +5v. The pin input takes voltage. It doesnt go to ground. It is at ground already. So you can inject up to 5v. It wont register unless very high though, so 2v wont cut it.

Quote: Originally Posted by durwood

The analog inputs are just an A/D conversion correct? I guess that should work, but the brain only has 10 analog inputs huh? Hmmm, I think that would be enough inputs.

Yup 10 analogue inputs. And also you can combine them as OEM systems do. It seems like you know a bit of electronics so with some resistor magic, you can get a single wire that outputs different voltages at different presses.

Quote: Originally Posted by durwood

And if I already have a rotary volume control (Rotary encoder) tapped into, can I send the 5V/0V oout to the Brain? Would it be as simple as connecting the two wires to two digital inputs to control volume? I've already done the volume by tapping into a mousewheel and using autohotkey to change volume in roadrunner, but if this would do everythign in one shot I'd be extremely happy.

Technically yes, but as for the sampling of the Brain it is "slow" in electronics terms. It is maybe 33Hz. It can go up to 180Hz for reading which is much better but CPU cycles suffer. So depending how fast you click, it may not register.

We are working on a digital encoder to analogue voltage converter with a faster sampling rate. So for now it may work. In the future it will work.

Quote: Originally Posted by durwood

Oh, and amp turn on delay with instant off before computer finishes shutting down.

Turn on delay on boot is 100%. Turn off I am still trying to find the acpi call to know if the computer is shutting down. But if the program is shut down, the outputs will turn off (unless otherwise specified).

Quote: Originally Posted by durwood

Sorry for all the questions. I was interested in this way back before you guys had a working product and I lost track of the whole thing.

Glad that you came back!

09-19-2007, 10:57 AM	#4
2k1Toaster Fusion Brain Creator Join Date: Mar 2006 Location: Colorado, but Canadian! Posts: 7,410	Quote: Originally Posted by durwood I know it could register on a digital input if the theshold is high enough to tell if it's high not low, but the problem is digital input are typically held high via a pull-up resistor just like how a USB gamepad is setup. That's what I was kind of wondering. Actually the digital ins have 1 pin go to the chip and 1 pin is +5v. The pin input takes voltage. It doesnt go to ground. It is at ground already. So you can inject up to 5v. It wont register unless very high though, so 2v wont cut it. Quote: Originally Posted by durwood The analog inputs are just an A/D conversion correct? I guess that should work, but the brain only has 10 analog inputs huh? Hmmm, I think that would be enough inputs. Yup 10 analogue inputs. And also you can combine them as OEM systems do. It seems like you know a bit of electronics so with some resistor magic, you can get a single wire that outputs different voltages at different presses. Quote: Originally Posted by durwood And if I already have a rotary volume control (Rotary encoder) tapped into, can I send the 5V/0V oout to the Brain? Would it be as simple as connecting the two wires to two digital inputs to control volume? I've already done the volume by tapping into a mousewheel and using autohotkey to change volume in roadrunner, but if this would do everythign in one shot I'd be extremely happy. Technically yes, but as for the sampling of the Brain it is "slow" in electronics terms. It is maybe 33Hz. It can go up to 180Hz for reading which is much better but CPU cycles suffer. So depending how fast you click, it may not register. We are working on a digital encoder to analogue voltage converter with a faster sampling rate. So for now it may work. In the future it will work. Quote: Originally Posted by durwood Oh, and amp turn on delay with instant off before computer finishes shutting down. Turn on delay on boot is 100%. Turn off I am still trying to find the acpi call to know if the computer is shutting down. But if the program is shut down, the outputs will turn off (unless otherwise specified). Quote: Originally Posted by durwood Sorry for all the questions. I was interested in this way back before you guys had a working product and I lost track of the whole thing. Glad that you came back! __________________ Fusion Brain USB I/O Board with 12 Digital Outputs, 10 Analogue Inputs, 4 Digital Inputs and only 68mm x 68mm! Now Shipping Worldwide!!!