Mini projects:
http://topprojects.blogspot.com/search/label/electronics
http://www.lazystudent-projectarchive-online.com/
http://www.blueroomelectronics.com/
http://pdfdatabase.com/index.php?q=b+tech+electrical+mini+projects
http://www.vclcomponents.com/s/0__/b_tech_mini_projects_in_java
http://eceprojects.478348.free-press-release.com/
http://www.edcomp.com/results/Mini+Projects+in+VB+or+C+for+MCA+Students.html
http://www.sourcecodeonline.com/list?q=mini_projects_for_btech_in_java
Seminars:
http://seminarsonly.com/
http://www.seminartopic.org/
http://www.seminartopics.net/Seminar-Abstract-Electronic%20Science-0-index