Public projects 2

Using Arduino Mega Sensor Shield with Arduino DUE

Project showcase by tolgadurudogan

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Tricks for Controlling DC Motors

Project tutorial by tolgadurudogan

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Mini Acoustic Levitation

Project tutorial by millerman4487

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LED as a Light Sensor

Project tutorial by Harsh Dethe

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  • 8 comments
  • 17 respects

Arduino Paper Controller (Buttons + Slider)

Project tutorial by millerman4487

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  • 52 respects

Comments 2

  • Tricks for Controlling DC Motors 8 months ago

    At first, thanks for your comments.
    "...in the bridge circuit the bottom 2 transistor should be NPN not PNP as the current is in reverse..."
    It's not a must actually... Perhaps you considered another path for reversing current. My considerations was either T1A-Motor-T1B or T2A-Motor-T2B paths.
    "...putting 4 diodes between collector and emitters will protect the transistors from spikes back EMF from the motor induction..."
    I think if transistors are selected at suitable ratings, effect of spikes would be negligible during normal operation. Anyway such spikes by induced coils of DC Motors, appear mainly when motor is stopped. But it's a transient case and takes very short while that can be handled by transistors.

  • Tricks for Controlling DC Motors 10 months ago

    Thanks for interesting, and hopefully all of them will fit well on your implementations.

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