Download - Lcd Stepper
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LCD
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PIN Assignment
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Character LCD’s
• Must write both data a d co tro! words to• LCD’s• • Comma ds"• # C!ear the dis$!a%
• # &ositio the cursor • # 'ur the cursor o or o(( • # Co tro! the st%!e o( cursor )!i e or b!oc*+
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te$$er Motors
• • Mo e i sma!! i creme ts o( rotatio• • Ca ho!d a $ositio i de(i ite!% u der !oad• • Ca rotate co ti uous!%
• • Ca mo e uic*!% to $ositio a d 4(reeze5• • re used (or • # robots• # $ri ter head $ositio i 7• # dis* dri e head $ositio i 7
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Modes o( te$$er Motor"
• 8u!! te$
• 9a!( te$
• Micro te$
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Co ce$tua! Mode! o( : i$o!ar te$$er Motor" 8u!! te$
The center taps ofthe windings arewired to the positive
supply
The two ends ofeach winding arealternately groundedto reverse thedirection of the fieldprovided by that
winding
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Full Step Mode:-
Full step sequenceshowing how binarynumbers can controlthe motor
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Co ce$tua! Mode! o( : i$o!ar te$$er Motor" 9a!( te$
Same circuitry withdifferent windingsequence
Two windings areenergized at the sameinstance
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Half Step Mode:-
Half step sequence showing how binarynumbers can control the motor