The HVW Technologies' Stamp Stack II is a bread-board friendly, abuse-tolerant, Parallax BS2 100% compatible microcontroller.

Designed to plug into any solderless breadboard, this 100%-compatible Basic Stamp 2 microcontroller is reverse-polarity protected, has a built-on serial programming connector and reset switch, and has an easily replaced interpreter & EEPROM.

Although somewhat larger, it's substantially less expensive than a true Parallax BS2 module, but still interfaces with our Sumovore Mini-sumo through the BS2-brainboard add-on.