7FETs

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Revision as of 11:39, 14 February 2012 by Rew (talk | contribs) (Jumper settings)

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The SPI_6FETs PCB
The SPI_6FETs PCB

This is the documentation page for the SPI_6FETs board.

Overview

The board has 7 fets that allow you to pull a pin of a load low. You would normally tie the other end of your load directly to the powersupply.

About 1A per output should be possible. Maximum voltage is 20V.

You will have to provide your own protection circuits if you are going to drive inductive loads (like a motor).

Assembly instructions

Possible Configurations

External resources

Datasheets

Additional software

Related projects

Pinout

LEDs

Jumper settings

The connector SV2 allows you to connect the "powersource".

You can chose two configurations: You can use pin 1-2 as ground and power. You can connect up to 15V (*) to pin 2 referenced to GND on pin 1.

(*) The datasheet for the used transistors mentions "20V", but is is always prudent to keep some margin.

If you want 5V as the powersource, you could put a jumper on pin 2-3. In that case you will have to be aware that you're using the 5V power from the rest of the system. This will be limited by e.g. USB power limits, other devices on the SPI bus, cable thickness and connector capability. But for low-current 5V applications this might be useful.

Programming

The software

Default operation

Future hardware enhancements

Future software enhancements

Changelog

1.0

  • Initial public release