2x2 project board for use w/ATtiny84, with space for through-hole and SMD parts and power jackSold By Azzy's Electronics
International customers - please check our shipping policy for international shipping information and links before ordering - COVID has disrupted international shipping!
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||Ships From||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!
United States Postal Service: Priority Mail Express
The absolute fastest domestic service offered by the postal service. This is typically one day faster than Priority; but as you can see, that is a very expensive day. Orders placed via this shipping method will be given top priority in handling.
Kurt | March 17, 2020
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