This is basically like Druid's design. It's an Atmel chip programmed to interface 2 rotary sticks. I haven't used it in forever since I upgraded to one of RandyT's GP-Wiz units that has it built in. I assume it works, still (don't know why it wouldn't). If anyone wants it, I'll give it to you if you cover shipping.
This unit includes 2 cables that attach directly to LS-30 (and Happ?) mechanical rotary sticks.