"Hi all, I made 4 hp eurorack adaptation of the Ian Fritz AD/AR. Hereby i present it and I have pcbs and panels on the way (all with Ian's kind permission)
The module is based on this circuit with the following modifications: It has twice the ad/ar envelope circuit It is without the delayed pulser part There is a led indicator to show if an envelope is active Input of the first envelope is normalled to the second envelope There is an additional switch that converts a gate into a trigger, combined with the previous modification this can result an a simultaneous AR and AD envelope with one incoming gate signal Schematic can be found here
Known limitations: -The envelope won’t retrigger if the attack is still busy -Some very short triggers are not passed through when the gate to trigger switch is enabled (when switch is down) "
