What is the difference between the Handy Board and the 6.270 Board?
• socketed 52-pin 6811 • 32K battery-backed static RAM • digital input latch • digital output latch driving two L293 chips • 14-pin LCD interface • two user pushbuttons • powered/polarized individual sensor connectors • 40 kHz IR output drive • one servo motor output The differences, first from a pro-Handy Board point of view: • single battery powers CPU and motors; recharge circuitry for the battery built into the Handy board; battery fits into commercial enclosure sized to fit the HB. • 7 of the 8 analog inputs broken out to sensor headers; eighth is wired to a user trimpot (can be used to scroll through messages on the LCD screen). (On the 6.270, you need the exp board to get the knob and have only 4 on-board analog input headers on the main board.) • on-board IR receiver interprets signals from household remotes or other robots • separate serial interface board uses off-the-shelf serial cables (no custom cable wiring like the 6.270), and incidentally recharges the HB’s battery when
