Sparky blue smoke monster Appears whenever the magic smoke of an electronic component is let go. And his very favorite is when people are first starting out with electronics and robotics: wiring a high-powered motor, solenoid, or LED is a perfect recipe for getting rid of that blue smoke from an Arduino or Raspberry Pi. why? Because these high current devices cannot be connected directly to the GPIO pin on the microcontroller! They should have a transistor/MOSFET drive, as well as a bounce-back protection diode that absorbs the inductive “kick” caused by turning the motors and solenoids on and off. Without this driver and diode – your tronix will be a fagot!
We have tutorials on how to connect components to make a breadboard transistor motor, but it’s easy to put a diode in reverse, or to choose the wrong type of transistor. Some people don’t want an extra breadboard just to control a simple motor fan or solenoid. This is why we designed a file Adafruit STEMMA MOSFET driver for motors, solenoids, and LEDs.
This board has a simple plug-and-play JST PH input connector (2mm pitch) for solderless use. Provide power (3V to 30V) and signal (logic level 3V to 20V). On the output there are two terminal blocks, with one block connected to power and the other going to ground when the signal level is high. In the middle is a file AO3406 N-Channel MOSFET Rated for 30Vds, 3.6A peak, 70m road range plus 1N4007 flyback diode.
You can also access all of the signal and power pins on the 0.1″ break header if desired, but we expect most people will like using it as a solderless MOSFET companion. Ideal for driving motors, inductors, high power LEDs, monochrome LED strips, or other loads up to 1.5 amps continuous draw, 3 amps peak. Note that the JST PH connector itself is only rated for 2 amps continuous.
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