Brent, Is this possibly what you are looking for? www.wrighthobbies.net/maxbotix.htm Tom Wrighton Brent Brown wrote: Hi, I remember seeing a link on the PIClist recently (last 2~3 months) to an intersting looking ultrasonic distance sensor module - but now I can't find it again! (spent ages searching my PIClist emails, browser history, google, etc). Probably mentioned in passing to some loosely related subject... from what I remember it was an approx 1" square PCB module with Ultrasonic transducer mounted on it. Range was 6" to 200" or similar and had analog output (maybe even SPI interface?), price on the web site was US$29.95. I can't remember exactly what was so appealing about this one to me, probably the combination of size/cost and ease of use. Hope someone's memory/filing system is better than mine. Thanks! -- Brent Brown, Electronic Design Solutions 16 English Street, Hamilton 2001, New Zealand Ph: +64 7 849 0069 Fax: +64 7 849 0071 Cell/txt: 027 433 4069 eMail: brent.brown@clear.net.nz -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist --------------------------------- Do you Yahoo!? Everyone is raving about the all-new Yahoo! Mail Beta. -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist