Re: Stereo Memory Man w/ Hazarai mod?
Posted: 22 Jul 2011, 11:38
Awesome 
I've put some labels on this image to indicate the terminals i connected to. The letters (A & B) are just an identifier. I didn't bother checking what the actual A & B terminals were. There are 3 resistors underneath the arduino board to limit the base current to the transistors. The transistors are 2N3904's because that is what I had lying around.
The code is really simple. The rotary encoder will be getting debounced by the existing micro in the memory man(to eliminate false switching when the encoder is turned). I have used delay times for my swtching that are (more than) long enough to still be picked up. Because the program is only performing one function at a time, switch debouncing is unnecessary. If either footswitch is held down, the program will run through its loop then repeat. This enables you to step through the presets by holding down either footswitch.
// Preset selector for Ehx Memory Man with Hazarai
// Written by Pete Curre 8/01/11
// set pin numbers:
const int PresetUP = 2; // the number of the pushbutton pin
const int PresetDOWN = 3; // the number of the pushbutton pin
const int Output1 = 5; // the number of the output pin
const int Output2 = 6; // the number of the output pin
const int Output3 = 7; // the number of the output pin
// variables will change:
int presetUPstate = 0; // variable for reading the pushbutton status
int presetDOWNstate = 0; // variable for reading the pushbutton status
void setup() {
pinMode(PresetUP, INPUT);
pinMode(PresetDOWN, INPUT);
pinMode(Output1, OUTPUT);
pinMode(Output2, OUTPUT);
pinMode(Output3, OUTPUT);
}
void loop(){
// read the state of the pushbutton value:
presetUPstate = digitalRead(PresetUP);
presetDOWNstate = digitalRead(PresetDOWN);
// check if the pushbutton is pressed.
// if it is, fire the outputs
if (presetUPstate == LOW) {
// turn LED on:
digitalWrite(Output1, HIGH);
delay (25);
digitalWrite(Output2, HIGH);
delay (25);
digitalWrite(Output1, LOW);
delay (25);
digitalWrite(Output2, LOW);
delay (25);
digitalWrite(Output3, HIGH);
delay (25);
digitalWrite(Output3, LOW);
delay (250);
}
if (presetDOWNstate == LOW) {
// turn LED on:
digitalWrite(Output2, HIGH);
delay (25);
digitalWrite(Output1, HIGH);
delay (25);
digitalWrite(Output2, LOW);
delay (25);
digitalWrite(Output1, LOW);
delay (25);
digitalWrite(Output3, HIGH);
delay (25);
digitalWrite(Output3, LOW);
delay (250);
}
}
