"what's an L289?"

It is a bridge driver for stepper motors:
http://www.stmicro.fr/stonline/products/literature/ds/1773/l298.pdf 



- Anders Gustafsson
  Engineer, CNE6, ASE
  Pedago, The Aaland Islands (N60 E20)
  www.pedago.fi
  phone +358 18 12060
  mobile +358 40506 7099
  fax +358 18 14060


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