Hi all, Has anyone tried to use a PIC in an ultrasonic bug repellent device? (I was eaten alive at my son's soccer practice last night!!) I believe that multi-frequency or a sweeping frequency device would be more effective than a single frequency device. Mosquitoes may be sensitive to different frequencies than black flies, for example. The PIC could be used to both control the frequency changes as well as generate the frequencies. Has anyone had any experience in this area? Mark A. Corio Rochester MicroSystems, Inc. 200 Buell Road, Suite 9 Rochester, NY 14624 Tel: (716) 328-5850 Fax: (716) 328-1144 e-mail: Mcorio@aol.com ***** Designing Electronics For Research & Industry *****