- on Hobby & Modelling
- Published in issue 12/2000 on page 0
Three Switches on One RCX Input
One of the main limitations of the RCX module of the Lego Robotics Invention System is that only one switch can be connected to a given input. Even though each input has a measurement range of 0 to 1023, using an internal 8-bit A/D converter, the software works with only two states for detecting a switch: open and closed.If you use the standard Lego software, you will have to accept this limitation. However, if you use a different programming language, such as Visual BASIC, it is not that difficult to find a way around it.