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I need to power 2 brushed dc motors with 2A each and 3 to 6V, one direction(no bidirectional or break). To the enable the rpi 3.3V pwm, and standard pins(breadboard), not those micro pins. I know the l298 is an option. Are there better efficent options ? May be mosfet ? Thanks.

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  • \$\begingroup\$ The L298N may be underpowered for 2 amp continuous. If you mean 4 amps (2 amps per motor) it is certainly underpowered. If all you want to do is switch the motor on/off a MOSFET is likely to be a much better choice. This is the wrong stack exchange for this question (nothing to do with the Raspberry Pi). Perhaps try electronics stack exchange. \$\endgroup\$
    – joan
    Oct 26 '18 at 7:11
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You can use a NPN transitor and use the GPIO control to turn the motor on/off. There are several posts on this here and here.

If you do not want to deal with the wiring, you can use one of the H-bridge motor driver HAT's available for the Pi like this.

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  • \$\begingroup\$ I'd like 1 or 2 transistor but I couldn't find one that match 2A and the voltage... I want something more essential than the hat. \$\endgroup\$
    – Jackt
    Oct 26 '18 at 15:33
  • \$\begingroup\$ You can use a Darlington transistor like this adafruit.com/product/976 \$\endgroup\$
    – karan
    Oct 27 '18 at 16:25
  • \$\begingroup\$ No, neither an NPN transistor nor especially not a darlington is a viable option for this - there's just too much loss in a low-voltage, high current application. An N channel MOSFET is what should be used. \$\endgroup\$ Oct 29 '18 at 2:53
  • \$\begingroup\$ Some mosfet could be a good idea. I like IC drivers overcurrent protection but those boards are expensive: 15$ for a 2$ IC... I'll post an update soon. Should I parallel the outputs of 2 1A mosfet or what ? \$\endgroup\$
    – Jackt
    Nov 2 '18 at 2:33

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