If you are going to goto the "Blink'n Light" presentaion (from 1:00pm to 2:45pm Saturday) here is a parts list. I am not sure he will have time to cover all these parts but if you have parts he will probably help you with them. Parts list: Various LEDs (3mm to 5mm, assortment of colors to suit the user's personality), resistors in the range of 460ohm to 1kohm, a minimum of one per LED to be hooked up. For the daring, an RGB LED plus three resistors. A photo sensor, a capacitor - 10 microFarads, a breadboard compatible momentary contact switch. A DS18S20, and / or a DHT11 or 22. An Adafruit 8x8 bi-color LED matrix. LEDs: http://www.adafruit.com/products/297 http://www.adafruit.com/products/754 http://www.adafruit.com/products/780 (you get the idea...) RGB LEDs: http://www.adafruit.com/products/302 Bi-color 8x8 LED matrix: http://www.adafruit.com/products/902 Resistors: http://www.alliedelec.com/search/productdetail.aspx?SKU=70022897 http://www.alliedelec.com/search/productdetail.aspx?SKU=70022915 Photo cell: http://www.adafruit.com/products/161 Capacitor: http://www.alliedelec.com/search/productdetail.aspx?SKU=70186496 http://www.alliedelec.com/search/productdetail.aspx?SKU=70111898 DHT11 Temp and humidity sensor: http://www.adafruit.com/products/386 DHT22 Temp and humidity sensor: http://www.adafruit.com/products/393 DS18S20: http://www.alliedelec.com/search/productdetail.aspx?SKU=70127740 http://www.alliedelec.com/search/productdetail.aspx?SKU=R1036264 Wiring diagrams and other misc stuff: http://www.rpural.net I believe you can order from adafruit and before 10am tomorrow (Thanks Susan) and it should arrive Friday! ==>brian.