What is it? This is a project board for use with an ATtiny84 or 841. In addition to the chip itself, it provides pads for a bypass capacitor (1206), ISP header, SOT-223 regulator, and caps on the p...Read More…
This is a project board for use with an ATtiny84 or 841. In addition to the chip itself, it provides pads for a bypass capacitor (1206), ISP header, SOT-223 regulator, and caps on the power supply (1206 or 1210), and a barrel jack. The rest of the board is dedicated to prototyping area, providing pads for an SOIC-16 or TSSOP-16 IC (or 2 SOIC-8's), a PLCC-6 (5050 LED) or SOT-23-6, and up to 6 SOT-23 mosfets in 2 banks with shared source (pads for 1206 resistor between gate and source on bottom of board) as well as area for through-hole parts.
Also available is a through-hole friendly version, for those who prefer to use through-hole parts when possible. This version takes an ATTiny84 (or 44/24) in the through-hole (DIP-14) package. Additionally, the regulator can be either a 1117-series or 7805 in TO-220 package (instead of SOT-223), and the caps on the regulator are also through-hole, not SMD. Pads for four SOT-23 MOSFETs are provided (instead of six) to make room for the larger area needed for the regulator and capacitors. All other features are the same.
I have always found solderless breadboard to be the most effective tool for prototyping and one-off projects - however, they all suffered from two problems. First, most of the best parts now are in surface mount packages, difficult to use with through-hole proto-board. By effectively putting SMD breakout boards onto the project board, these parts can be used as easily as through-hole parts. Secondly, the quality of the available protoboard was just plain lousy. These boards are manufactured to the standards of real PCBs, with copper on both sides and plated through holes.
Using and RGB LED in the 5050/SOT-23-6 area is an obvious option - but by no means the most exciting. There are a great many very useful parts available in SOT-23-6, particularly in terms of power management. Cap-switch voltage doublers, regulators, and buck/boost drivers are all common and cheap in SOT-23. Driving some high power LEDs? Include the buck or boost converter to power them on board!
Note that two pin mappings are supported by various cores. My core, available from https://github.com/SpenceKonde/ATTinyCore/ allows you to select the desired pinmapping from a submenu.
|Shipping Rate||First item||Additional items|
United States Postal Service: Economy (untracked, bare boards only)
The cheapest shipping option available, for bare boards within the United States only.
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.