python version of a 4051 multiplexer chip
I'm working on a lunetta style synthesizer, basically simple audio circuits based off common CMOS chips. This script emulates the behavior of a 4051 multiplexer chip - http://www.ti.com/product/CD4051B
the output is based off of whatever combination is fed into the three inputs. this script counts up from 0 to 8, but you can get unusual patterns by setting any of the inputs to 0 or 1, or randomly chosing 0 or 1.
truth table:
| a | b | c | pin | step # |
|---|---|---|---|---|
| 0 | 0 | 0 | A0 | 1 |
| 0 | 0 | 1 | A1 | 2 |
| 0 | 1 | 0 | A2 | 3 |
| 0 | 1 | 1 | A3 | 4 |
| 1 | 0 | 0 | A4 | 5 |
| 1 | 0 | 1 | A5 | 6 |
| 1 | 1 | 0 | A6 | 7 |
| 1 | 1 | 1 | A7 | 8 |
more information on lunettas / boolean synths at https://milkcrate.com.au/_other/sea-moss/
quick 8 step example outputs:
0 0 0
A0
0 0 1
A1
0 1 0
A2
0 1 1
A3
1 0 0
A4
1 0 1
A5
1 1 0
A6
1 1 1
A7
randomized:
0 0 1
A1
1 1 1
A7
0 0 0
A0
1 0 0
A4
1 1 0
A6
1 1 1
A7
0 1 0
A2
1 1 1
using another oscillator and switches to control each bit would lead to interesting patterns.