Step sequencer for 8 mute tracks
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| Big LED buttons | KS01-BLV-2 | 20 x ORDERED |
| OpAmp IC | TL074 | ONHAND |
| VCA IC | SSI2164 | 4 x ORDERED |
| 3.5mm Mono Jacks | WQP-WQP518MA-BM | 20 x ORDERED |
| Blank Panel | 10hp 12hp | ONHAND |
| LED IC | TLC59401 | 2 x ORDERED |
The Mute Sequencer is an 8 track step sequencer, storing boolean values for the mute status. The maximum sequence length is 255 steps with 8 tracks containing the mute values. Length is the current sequence length (minimum 1, max 255) and step is the current step number. So if you look at sequencer[3][TRACK_1] you'd get the boolean value for Track 1 at step 3.
J. M. Hopkins
boolean[255][8] sequencer[step][track]
byte length
byte step
To not get confused on the boolean value for mute/unmute, we also #define their values. And because tracks are 1 indexed physically, and 0 indexed logically we'll also add in #defines for them too. These will also double as their button numbers.
#define MUTE false
#define UNMUTE true
#define TRACK_1 0
#define TRACK_2_ 1
#define TRACK_3 2
#define TRACK_4 3
#define TRACK_5 4
#define TRACK_6 5
#define TRACK_7 6
#define TRACK_8 7
Buttons have a few arrays to allow debounce and have state change flags for rising edge / falling edge logic.
boolean[14] button_current_state[button]
boolean[14] button_last_poll[button]
boolean[14] button_changed[button]
LEDs are a bit simpler, as they are just an array, but because we're controlling LED intensity as well, they are actually byte arrays for 0-255:
byte[14] led[button]
And adding a few more defines for the rest of the buttons and modes. (Mode is the general state machine state, of which we have 4)
#define BUT_STEP_PLUS 8
#define BUT_STEP_MINUS 9
#define BUT_ADD_UMO 10
#define BUT_DEL_MO 11
#define BUT_LIVE_EDIT 12
#define BUT_RESET 13
#define BUTTON_DEBOUNCE_TIME 50
#define MODE_EDIT 0
#define MODE_LIVE 1
#define MODE_LIVE_UMO 2
#define MODE_LIVE_MO 3So overall layout will be similar to the following image (quickly rendered in Power Point):
8 tracks are lined up vertically, controls are on the first column, track mutes / display on second column, inputs on third, and outputs on fourth.
Note that the push buttons are momentary push, and can be illuminated by separate control logic. The idea is to pair with the ACL Sinfonion, not exactly, but in spirit. You can see buttons with full and partial illumination here for an idea of functionality:
This module will be in Eurorack format with the following specifics:
Connections:
Logic:
User Interface
Rough Initial Parts List
MughtyWinky
lfortuna
Tillo
Hexabitz