From: "Lars v.d. Doelen" >I'm trying to build a bi-directional, wireless link with my pic(16F84) robot. I found several commercial TX/RX modules that only go 1-way, but I would like (if possible) to build my own TX/RX modules that will give me 2-way communication capabilities. My main reason for this is a limited budget. I don't have information on building your own but a product that I maintain uses Tx/Rx modules from Abacom that seem to work well. www.abacom-tech.com Tim -- http://www.piclist.com hint: To leave the PICList mailto:piclist-unsubscribe-request@mitvma.mit.edu