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Am achizitionat acest produs : http://www.pololu.com/product/713

Aseara l-am conectat la o placa arduino + alimentare externa.


Din documentatia de pe site am vazut ca nu exsta protrectie ( reverse ) pe pinul de vvc ( alimentare de 5v din arduino ).

1) Ar trebui sa pun o dioda?

2) De care ?

3) Diodele sunt pe marimi precum rezistentele?

4) Imi recomandati si alte rezistente,diode de pus pentru o buna functionare a acestui driver?


5) In testul de aseara am facut un test doar cu un motoras ( luat dintr-un cd-rom vechi ) si am conectat PWMA,AIN2,AIN1,STBY( pt motor ), VCC alimentarea driverului, VMOT + -ul de la sursa externa. Initial am conectat si toti ceilalti pini de GND ai driverului la ground-ul comun. Ulterior am scos aceste 3 fire , unul cate unul .... si motorasul tot mergea. e ok sa functioneze fara pinii de ground connectati ?



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