Here's the future DEFX Calypso project, our take on the Spaceman Explorer phaser.
Since the original used a custom programmed chip for the LFO, we looked to Tom over at Electric Druid for an "off the shelf" upgrade. The StompLFO chip fit the bill here, and also upgrades the circuit as a whole. Instead of 5 waveforms and a expression pedal mode, the chip offers 8 waveforms, including a couple of different sample hold modes. We retained the expression pedal sweep, you simply turn the depth to zero, and the expression pedal manually sweeps the phaser. It also adds tap tempo, as well as a gate input for use with an external sync signal. A rate LED allows you to see what the big gun inside is doing. Like they say, more, is.... more!