As a Shakuhachi player I need my hands on the flute. So I use me feet to manipulate parameters and switches on the synthesizer. This module was originally build for my Shakuhachi to Synth project to provide the possibility to connect foot switches with the synthesizer and keep the patch intact when they are removed. The signal is not routed through the foot switch. Instead CMOS switches are used, turned on and off with the foot switch. So the signal stays within the synthesizer and the connection to the foot switch carries only DC. Removing the foot switch does not interrupt the signal flow in the synthesizer.
Specs and features
Four independent switches
Signal flow stays intact when foot switch removed
Runs on +/-15V and +/-12V
Power consumption below 10mA each rail
The documentation and the Gerber files for download can be found in my website.
The switch in the DG202 is hold in on position with a 100k resistor against the positive rail. With a foot switch attached you can pull down the hold voltage when you close the foot switch.
This Module is build around the counter 4017. It provides you with with 8 bidirectional toggle switches. The active switch is signaled with a LED. All switches are brought out to the front panel, so you can patch this module with maximum flexibility. Audio signals are switched as well as control voltages. This module is clocked external and can be clocked with high frequencies. Way above the audio range if needed. You can select the stepped sequence length between 2..8 steps with a rotary switch. The reset input is brought out as well.
Specs and features
• Sequential switch with 2..8 steps
• Bidirectional toggle switches
• Audio and control voltages switchable
• External clock way above audio range
• Runs on +/-15V and +/-12V
The 4017 is clocked through the clock input with IC5C and IC5D. RS1 selects the sequence length. The DG419 toggle switches are successive toggled with the every active step of the 4017. The LED signals the active step.