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Messages - Keoni29
Pages: 1 ... 143 144 [145] 146 147 ... 168
2161
« on: November 13, 2011, 07:48:04 am »
It doesn't work. I will check the signal with a digital osciloscope. Edit: I think it's the hardware. I don't have a clue  Every site tells me to do it differently
2162
« on: November 12, 2011, 04:55:11 pm »
Does it need a special midi cord or something?
No, but you gotta build a small piece of hardware. You need a 1k, 220 and 800 ohm resistor, a 9v battery, a midi socket,a 2.5mm plug socket and a pnp transistor Sounds awesome. I have an Arduino, I might try it. Or even help.
No arduinos involved, but thank you for the offer.
2163
« on: November 12, 2011, 02:16:45 pm »
It will support all midi features I hope so it's gonna be awesomesauce if it works. Shootout to thepenguin77 for his UART axiom.
2164
« on: November 12, 2011, 02:05:57 pm »
Interesting. Would it let you use for example a calc as a midi keyboard or just an actual midi keyboard to play music on your calc?
It sends midi notes to an external midi device.
2165
« on: November 12, 2011, 12:49:09 pm »
does that work flawless?
Almost since there is a tiny delay. You won't notice it 
2166
« on: November 12, 2011, 12:47:16 pm »
Use this:
While Getkey(xx)
Freq
End
2167
« on: November 12, 2011, 12:40:31 pm »
Soon we have real midi for axe  (I hope)
2168
« on: November 12, 2011, 11:38:32 am »
sounds like earrape
lol, well yeah. Can't do much about the sound quality without ASM
You can! Use a frequency table
I did lol. that's what AxeSynth does. You try it, there's no escaping the slight buzz on Continuous Mode.
That takes up a lot of space. But indeed, that works flawless.
Nope just 24 bytes for the lut including the lowest octave (16-bits) and a small piece of code to shift octaves:
the wavelenght is {GDB1LUT+NOTE}r/e^(OCTAVE)
2169
« on: November 12, 2011, 11:10:50 am »
That takes up a lot of space. But indeed, that works flawless.
Nope just 24 bytes for the lut including the lowest octave (16-bits) and a small piece of code to shift octaves: the wavelenght is {GDB1LUT+NOTE}r/e^(OCTAVE)
2170
« on: November 12, 2011, 10:47:23 am »
sounds like earrape
lol, well yeah. Can't do much about the sound quality without ASM
You can! Use a frequency table
2171
« on: November 12, 2011, 09:51:31 am »
I should get an arduino :p Solves every problem.
2172
« on: November 12, 2011, 05:10:50 am »
I'm not sure, but I think high is one.
Also 31250 is not really the bit rate, but changes/sec (unit is baud) ^^
So is it doable using axe?
2174
« on: November 12, 2011, 04:47:06 am »
Looks pretty easy, just a serial protocol
I don't know how easy it is to do with a TI-83, but its quite simple.
You should look first at making it output serial data, sending the bytes together with the stop bits at the right bitrate.
Serial.begin(31250); That is the bitrate in bits/second. 31kHz is very high. I might have to use a microcontroller to speed up the signal. Where should I put the stop/start bits exactely?
2175
« on: November 12, 2011, 04:31:56 am »
Hey guys! I'm working on a midiadapter for the TI 83 series calculators. The hardware is neary done (need a midi socket) I found this code on the arduino website:
void setup() {
// Set MIDI baud rate:
Serial.begin(31250);
}
void loop() {
// play notes from F#-0 (0x1E) to F#-5 (0x5A):
for (int note = 0x1E; note < 0x5A; note ++) {
//Note on channel 1 (0x90), some note value (note), middle velocity (0x45):
noteOn(0x90, note, 0x45);
delay(100);
//Note on channel 1 (0x90), some note value (note), silent velocity (0x00):
noteOn(0x90, note, 0x00);
delay(100);
}
}
// plays a MIDI note. Doesn't check to see that
// cmd is greater than 127, or that data values are less than 127:
void noteOn(int cmd, int pitch, int velocity) {
Serial.write(cmd);
Serial.write(pitch);
Serial.write(velocity);
}I wonder what the output of this code is (in binairy) so that I can write a midi routine in axe.
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