Handy Board FAQ Answers: “kversions”
How do I convert my stock Handy Board and Expansion Board to be compatible with Botball (the K versions)?
In order to convert a Handy Board system (HB plus EXPBD) to the corresponding Botball "K versions," two changes must be made:
- a trace must be cut on the Handy Board;
- a 47K x 5, 6 pin resistor pack must be soldered to the Expansion Board.
The following diagram shows where to cut on the Handy Board. After making this change, analog input 0 will no longer have a built-in 47K pullup resistor:
Next, get a 47K x 5, 6 pin resistor pack. Orient it as shown on the underside of the Expansion Board. Note the dot or band marking, which aim toward the edge of the board as indicated. Note that pin #2 is not connected. Clip it off before soldering.
Solder the 5 pins as shown. After making this change, Expansion Board inputs 20 through 23 now have their own permanent 47K pullup resistors. Inputs 16 through 19 have no pullup resistor.
Congratulations! You now have HB-K and EXPBD-K versions.
(Last updated 2003-03-11)