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Post by loopier on Mar 12, 2020 12:55:23 GMT
This module gives you a 1 to 8-channel switch, controllable from the buttons on the front panel or via the gate inputs. The circuit can be used bidirectionally; i.e a signal can be sent to one of eight destinations or one of eight signals can be selected to go to the output. Its a variation of the 3VCSWITCH. It uses a 4051 chip, a 1-to-8 multiplexer/demultiplexer.
The state of the bits A, B and C determines the INPUT/OUTPUT. For example, let's suppose we have a signal coming into IO1:
- If all bits are LOW (0V), the signal will go through OUTPUT 1
- If A is HIGH and both B and C are LOW, the signal will go through OUTPUT 2
- If B is HIGH and both A and C are LOW, the signal will go through OUTPUT 3
- ... and so on.
A, B and C set the binary number of the INPUT/OUTPUT.
A
| B
| C
| Output
| 0
| 0
| 0
| 1
| 1
| 0
| 0
| 2
| 0
| 1
| 0
| 3
| 1
| 1
| 0
| 4
| 0
| 0
| 1
| 5
| 1
| 0
| 1
| 6
| 0
| 1
| 1
| 7
| 1
| 1
| 1
| 8
|
A nice extension for this module would be converting it to a variable sequencer, adding a pot for each channel then routing their signal to a single OUTPUT.
Attached are the schematics and the perfboard component layout without the cables to avoid clutter.
Attachments:
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Post by robertlanger on Mar 12, 2020 15:07:24 GMT
Great! The variable sequencer you mentioned reminds me to the sequencer NightMachines made a while ago. |
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Post by NightMachines on Mar 12, 2020 15:36:49 GMT
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Post by loopier on Mar 13, 2020 7:44:24 GMT
Oh, wow! I had missed that one. Thanks! Niiiiice! |
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Post by rockysmalls on Mar 13, 2020 13:45:23 GMT
Fabulous Fabricating Felixman! a couple of questions... a) where did the nice springy breadboard switches come from? and b) is the 1u ‘no switches’ version the mystery upcoming Nightmachines module that will be commercially available via Robert?? if so I am in, euros at the ready.. if not... make it so!  |
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Post by NightMachines on Mar 13, 2020 13:56:37 GMT
Fabulous Fabricating Felixman! a couple of questions... a) where did the nice springy breadboard switches come from? and b) is the 1u ‘no switches’ version the mystery upcoming Nightmachines module that will be commercially available via Robert?? if so I am in, euros at the ready.. if not... make it so! Thank you  a) They’re called micro contact switches and are used for mechanical switching/sensing applications, like in pinball machines. b) That mystery module will be a liiiiiittle bit different  |
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Lugia
Wiki Editors
Ridiculously busy...ish.
Posts: 556 
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Post by Lugia on Mar 13, 2020 22:10:25 GMT
This might not ought to be a DIY module, frankly...there's a load of uses for something like this, and if the concept were extended to create a CVable matrix patch, hooooooo....
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Post by rockysmalls on Mar 14, 2020 16:07:41 GMT
Fabulous Fabricating Felixman! a couple of questions... a) where did the nice springy breadboard switches come from? and b) is the 1u ‘no switches’ version the mystery upcoming Nightmachines module that will be commercially available via Robert?? if so I am in, euros at the ready.. if not... make it so! Thank you a) They’re called micro contact switches and are used for mechanical switching/sensing applications, like in pinball machines. b) That mystery module will be a liiiiiittle bit different thanks Felix, i hadn’t seen those contact switches without a wheel on the top.. or indeed that tiny.. super cheap, i will have to get some. soooo.. the mystery module remains a mystery. scooby doo where are you? 🕸⚰️🔍 |
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anton
New Member
Posts: 29
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Post by anton on Mar 25, 2020 13:43:53 GMT
Hi, AE folks! Many thanks to loopier and NightMachines for their 4051 designs! I managed to combine a switch and sequencer in 1u AE format. It’s absolutely fantastic and outrageously functional.
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Post by young Protoboard on Mar 28, 2020 17:20:53 GMT
Where'd you find that big ol' fat pot cap on your DELAY? I love it and I want 50.
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anton
New Member
Posts: 29
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Post by anton on Mar 31, 2020 13:51:11 GMT
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Post by loopier on Apr 17, 2020 19:32:42 GMT
Hi, AE folks! Many thanks to loopier and NightMachines for their 4051 designs! I managed to combine a switch and sequencer in 1u AE format. It’s absolutely fantastic and outrageously functional.
wow!! nice!! |
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Post by MikMo on Apr 17, 2020 22:23:56 GMT
With a CD4067 and a 4 bit counter like CD4016 you could make a 16 step sequencer, but not fit it in one U space  |
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I used the same IC and added pots (or rather trimmers) to use it for CV switching:
