The Unofficial Guide to LEGO MINDSTORMS Robots by Jonathan B. Knudsen If you have technical questions or error reports, you can send them to booktech@oreilly.com. Please specify the printing date of your copy. This page was last modified on March 20, 2000. Here's a key to the markup: [page-number]: serious technical mistake {page-number}: minor technical mistake : important language/formatting problem (page-number): language change or minor formatting problem ?page-number?: reader question or request for clarification Confirmed errors: [151] In _The Unofficial Guide to LEGO MINDSTORMS Robots_, we should change the source code a little to make the programs work better. The programs that use the IR port should set it to long range mode. On p. 151, that means adding a line to the code just after the main() line: task main() { SetTxPower(TX_POWER_HI); SetSensor(SENSOR_1, SENSOR_LIGHT); [188] This same change should also be made to the RoboTag program, on p. 188. This time, we'll stick it in the initialize() subroutine, like this: sub initialize() { SetTxPower(TX_POWER_HI); SetSensor(BUMP_SENSOR, SENSOR_TOUCH); {219} The bottom diode is reversed. {222} The bottom diode is reversed. {223} In Figure 11-5, the top left diode is missing a bar. {224} In Figure 11-7, the top left diode is missing a bar.