Available as an assembled Module and as a DIY project.
This Module is currently available.
Waveshaper
The "5Pulser" waveshaper produces a train of pulses whose number (and widths) are varied with a control voltage. At the lowest control voltage a single square wave is put out, whereas at the highest voltage a train of 5 pulses spanning less that half of the total wave period is produced.
6 Users are observing this
These merchants probably sell this module. Huh?
Elby Designs IF113 5-Pulser