Looking for some cool stuff to add playtime with the kids, we found the Phoenix LTX Lazer Tag from Hasbro. phoenix ltx1.jpg The system consists of two guns which use infra-red (IR) to “communicate” with each other. There are two modes of operation: 1. Free Play (everybody against everybody else) 2. Team Play (team 1 vs. team 2) The system is based on IR transmitter and receiver integrated into the same gun. The IR transmitter/receiver uses 38kHz modulation and simple pulse width modulation for communications. The system operates very well both inside and outside the house. But after a while we wanted to add more guns and/or targets. Of course the first step to do this is to figure out the actual operation. A quick search of the web says that the units use 38kHz IR transmitters and receivers. Using the already built IR receive module shown in “Basic IR Communications” and the Saleae Logic, the LTX systems were decoded ...
