handyboard.com

The Handy Board FAQ The Handy Board This page answers some common questions and problems regarding the Handy Board: Click here to see all FAQs answered on the same page, or click on any of the links below to see individual questions answered. Why was the Handy Board designed? What is the difference between the Handy Board and the 6.270 Board? How can I choose between the Handy Board and the Mini Board? How can I choose between the RCX and the Handy Board? What is the difference between the L293D and L293B motor driver chips? Can I substitute L293B's for L293D's? What kinds of motors are compatible with the Handy Board? How do I convert a standard DC motor to work with LEGO Technic? How can I use motors other than 9 volts with the Handy Board? How can I get more power out of the Handy Board's motor outputs? What is the difference between a servo motor and a DC motor? How many servo motors can I drive from the Handy Board? How do I use stepper motors with the Handy Board? Does the Handy Board have any digital outputs? Please explain the Handy Board's battery charging system. My Handy Board's battery won't charge. What are the specifications of the Handy Board'sDC adapter? I'm measuring the voltage on my adapter, and it says 18 volts. Is this normal? What kind of RS-232 cable do I use to connect from my computer to the Handy Board Interface/Charger? What kind of telephone/RJ11 cable do I use to connect from my Interface/Charger Board to the Handy Board? The R11 on my Interface/Charger board is smoking hot and is turning black! What is wrong? I want to plug two Handy Boards together so that they can communicate. What kind of cable should I use? I want to save money. Should I buy the parts myself to build the Handy Board? Is it possible to expand the Handy Board\\\'s memory to 64K? Is there a version of the Handy Board that uses the 68HC12 chip? I can't find the Hitachi LM052-L display. What are some alternatives? I plan to use assembly language (or a compiler other than Interactive C) with the Handy Board. What is the memory map of the Handy Board 6811 system? I live outside of the United States. Where can I buy LEGO materials? How much of the Handy Board's 32K memory is available for user programs running under Interactive C? What is the correct value of the CONFIG register? How do I use EEPROM? How do I read and write to the serial line from an Interactive C program? IC won't load my ICB files. I keep getting a message that says "-POWER GLITCH-" on the Handy Board LCD screen. I'm using the DOS version of IC, and I'm running out of conventional memory. I can't get any of the downloaders to work on myfast Windows machine. What is wrong?!@#!! How can I configure Windows NT to work with the free Interactive C software tools? When I turn on the Handy Board, all I see is a row of black squares on the top line of the LCD screen. I left my Handy Board in the closet for a few months, and now when I try to use it I can't get it to work! One of the motor outputs has stopped working. When I turn the Handy Board off, the BATT and PWR LEDs stay on! What software did you use to create the Handy Board and this web site? Can you explain the meaning of the LEDs on the Handy Board and the Interface/Charger Board? What about the Rug Warrior? Someone told me the Handy Board is free. How can I get my free Handy Board? My motors are going crazy and I can't download to my board! What should I do? Can you recommend LEGO kits to use with the Handy Board? Where do I get replacement batteries for my Handy Board? Where can I get a replacement LCD screen for my Handy Board? I'm building my Handy Board, and it won't go into the bootstrap download mode. Can I install an NVRAM (non-volatile RAM) in the Handy Board? How do I convert my stock Handy Board and Expansion Board to be compatible with Botball (the K versions)? Where can I get a CMUcam for the Handy Board? Is the Handy Board compatible with Mac OS X? Why Can't I Use Nickel-Metal-Hydride (NiMH) Batteries with the Handy Board? Where can I buy a replacement 6811 processor? Where can I order parts to build the Handy Bug robot in Robotic Explorations?