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FET Shield for Arduino Pro Mini, with 3.3V Boost Converter US$19.95

FET Shield for Arduino Pro Mini, with 3.3V Boost Converter

This board allows you to to drive high-current switches with an Arduino Pro Mini 3.3V. This is a great shield for small prototyping. It features four FDMA1024NZ Dual N-Channel MOSFETs.

It also has an on-board power supply circuit whose TPS61200DRCT Voltage Boost Converter will generate 3.3V from voltages as low as 0.5V. That means you can run an 8MHz Arduino off a single 1.5V battery.

The power circuit chip is rated to drive only 600mA. That is fine for LEDs and many sensors, but if you need to drive a lot of current (e.g. motors), you should power your device(s) separately, i.e. connect one side directly to the power source and one side to the FET (the inner row of holes). This configuration will allow you to drive something like 5A or more if your frequency is low (see the datasheet for details).

Note that Vout on this board is set for 3.3V. If you want to use it on the 5V version of the Arduino Pro Mini with 5V peripherals, you will have to pass through the RAW and skip the shield's regulator altogether.

If you want to use PWM with the FETs, you can only directly modulate four of them (D3,D5,D6,D9). If necessary, you could wire across from D10 and D11 to use all six PWM channels.

Arduino Pro Mini FET Shield Resources

This board is based on a design by IDEO Labs. You can see the page for their prototype to get an idea of how this shield will connect, and the pinouts. Note however their prototype had a battery charger circuit and other pins that this production board does not (e.g. the "pin that can be routed to pin 2").

This board does not ship with any headers installed. You should be able to use combinations of the headers/sockets shown in the options below to come up with a connection solution that will work with whatever connectors you have installed on your Arduino Pro Mini board.

Optional Recommended Products for this Item
Arduino Stackable Female Header - 6 Pin+ US$0.50
Rectangular Pin Header, Male, 1x40 Single Row, 2.54mm Spacing+ US$0.75
14-pin Single Row Socket (SIP), machined (5 pack)+ US$3.95

This product was added to our catalog on Thursday 21 March, 2013.


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