Servo and Temperature Demo: Use the servo and the thermocouple with the "Ver T" (or Model T?) TNG-4 which has code for the Temperature interfacing. Plug either one into the SPI expansion port at the bottom or right side of TNG-4. For thermocouple, use TNG4cm1temperatureMax6674.ntl. For servo, use servo_cmd3d.ntl. Feel free to open up with ctrl-F7 and edit it. IR Remote demo: See data sheet from www.rentron.com (IR-D14.pdf on diskette, or see printout enclosed) for the new remote demo (prototype built by new work study student Rafael Cagigas, as his first project). In particular, note which buttons to press on Radio Shack remote. Test it with TNG4tst2a.ntl and notice red LEDs toggling when appropriate buttons are pressed on Radio Shack remote. Ref: http://www.rentron.com/remote_control/IR-D14.htm. Relay Board (for show and tell only -- for you for now): See TNGRelayManual.pdf on diskette. SPI Expansion board (just for show and tell for now) Enjoy! Ed