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MOSFETs are the go-to technology for controlling large loads from a microcontroller. As technology has advanced, and processor voltages have moved to 3.3v and below, MOSFETs have become available which will turn on with ever lower gate voltages. Unfortunately for many hobbyists, these modern low-voltage MOSFETs have often remained out of reach - while 4.5v logic level MOSFETs were made in through-hole packages, the lower voltage ones are available almost exclusively in surface mount packages.
One might expect breakout boards to be common - but while eBay and Amazon are full of 4-channel MOSFET driver boards... unfortunately these almost exclusively use old "standard" voltage MOSFETs or 4.5v logic level MOSFETs. It's never been clear to me why this was the case - but that's why I decided to offer these boards. This is an updated version of this board based on the AOD-476, which has since been discontinued.
This is a 4-channel MOSFET breakout board, made with the IRFR3708 logic level MOSFET, spec'ed for use with voltages as low as 2.8V on the gate, making them well suited for control with modern 3.3v electronics. These MOSFETs support switching loads up to 30V and are rated for continuous current of 20A @ 100C Tc (case temperature), 25A @ 25C. See documentation link for full specification.
Sold as an ASSEMBLED BOARD - with or without screw terminals. The bare board can be purchased here
Need beefier fets? Check out the larger version
Looking for something smaller? Check out these SOT-23 MOSFETs on breakout boards, as low as $0.50 each!
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United States Postal Service: First Class Tracked (recommended, cheaper than economy for 5+ items)
United States Postal Service: Priority Mail - Flat rate (fastest, tracked)
Domestic shipping via USPS Priority Mail - USPS advertises 1~3 day shipping time within the continental United States. This is a flat rate for any quantity of items - this is your chance to buy piles of small cheap items like my mini prototyping boards without paying extra for shipping!
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I build projects with Arduino (ATtinies almost exclusively, never anything bigger than a '328p) and Espruino (often both working together), and I make a lot of circuit boards for these projects. Particularly after using my ATtiny-prototyping board for my own projects, I realized that these would be useful to other people, and decided to start selling them here on Tindie.
Strip Board, Protoboard, prototyping board, solderable breadboard - whatever you want to call it - it has been a mainstay in electronics prototyping for decades, and hasn't changed much in the interim (not even in production quality, as they're still often single-sided and/or manufactured from low-grade phenolic resin instead of FR4). My prototyping board creations bring these into the modern era, offering a combination of 0.1" through-hole prototyping areas (consisting of groups of 2, 3 or 4 pins connected together, like solderable breadboard) and pads for common surface mount packages connected to through-holes for easy soldering. To handle projects of all sizes, I offer prototyping board as large as 4" x 4", down to less than an inch square in my Mini Protoboard line. Unlike most commercial prototyping board, these boards are made to the same quality standards as real PCBs. Through-holes are plated, and the boards are double sided. These are offered in both generic versions, and ones tailored to specific microcontrollers, like the Tiny84/85, or microcontroller boards, like the Espruino Pico, Arduino Pro Mini, and the wildly popular ESP8266.
ATtiny breakout boards:
I love the ATtiny lineup, particularly some of the less popular ones, like the incredibly full-featured ATtiny841, ATtiny1634, and ATtiny828. Breakout boards for these that had the features I wanted were not readily available - so I made my own. I've since expanded my product line to include breakout boards for the ATtiny861, ATtiny167, and ATtiny88 - and all of these are available both as bare boards and assembled. In addition to designing the hardware I also maintain [ATtinyCore Universal](https://github.com/SpenceKonde/ATTinyCore), which enables Arduino support for all these ATtiny's and more.
I also sell a number of other boards to fill what I felt were gaps in the market, including a breakout board for the popular LoRa/LoRaWAN modules from Microchip (the RN2483 and 2903), which has become one of my top selling items. I also sell MOSFET drivers and breakout boards for logic level MOSFETs operating at logic levels of 2.5v and lower - while a great number of MOSFETs are available that operate with very low gate voltages, these are almost invariably SMD parts which are difficult to use without a properly designed breakout board.