Hi all.
I several times found some posts of people new to DAVID who had theier difficulties with the stepper motor technic. While searching for some basic specifications for floppy stepper motors I found a genius tutorial about how to use the smal stepper motors of 1.44 MB Floppy drives.
It describes how you can make use of the stepper controler of a floppy. This is so easy, even the new ones here can follow the tutorial and for only EUR 10,- you get a floppy drive that comes with a stepper motor and the controler and you don't need to make your hands dirty!
That's cool. here is the link: http://www.codeproject.com/KB/system/floppystepper.aspx
All you need in addition is a gear. I use the "VARIO-GETRIEBE-BAUSATZ" which you can order from conrad.de
http://www1.conrad.de/scripts/wgate/zcop_b2c/~flNlc3Npb249UDkwV0dBVEU6Q19BR0FURTAxOjAwMDMuMDBlYy5mZDU2ODAyZSZ+aHR0cF9jb250ZW50X2NoYXJzZXQ9aXNvLTg4NTktMSZ+U3RhdGU9NDE0MDE3NzUxOQ==?~template=PCAT_AREA_S_BROWSE&mfhelp=&p_selected_area=%24ROOT&p_selected_area_fh=&perform_special_action=&glb_user_js=Y&shop=B2C&vgl_artikel_in_index=&product_show_id=&p_page_to_display=DirektSearch&~cookies=1&zhmmh_lfo=&zhmmh_area_kz=&s_haupt_kategorie=&p_searchstring=getriebe&p_searchstring_artnr=&p_searchstring_manufac_artnr=&p_search_category=alle&fh_directcall=&r3_matn=&insert_kz=&gvlon=&area_s_url=&brand=&amount=&new_item_quantity=&area_url=&direkt_aufriss_area=&p_countdown=&p_80=&p_80_category=&p_80_article=&p_next_template_after_login=&mindestbestellwert=&login=&password=&bpemail=&bpid=&url=&show_wk=&use_search=3&p_back_template=&template=&kat_save=&updatestr=&vgl_artikel_in_vgl=&titel=&darsteller=®isseur=&anbieter=&genre=&fsk=&jahr=&jahr2=&dvd_error=X&dvd_empty_error=X&dvd_year_error=&call_dvd=&kna_news=&p_status_scenario=&documentselector=&aktiv=&gewinnspiel=&p_load_area=$ROOT&p_artikelbilder_mode=&p_sortopt=&page=&p_catalog_max_results=20, if you live in Germany.
Just replace the small motor from that set with the stepper and thats it (in my case the stepper axis fits exactly to one of the many gear wheels that are comming with the set). But I'm sure you'll find similiar sets of gear boxes in other countries as well.
Have fun with it!
-Benjamin-