03 TinyDev ATtinyX4 - maxint-rd/arduino-modules GitHub Wiki

Small development board for using an ATtiny44A or similar 14-pin ATtiny in SMD package on a breadboard. Minimal hardware design featuring only MCU, breadboard friendly headers with extra power lines, ISP header for serial programming and reset button. Uses bare chip and limited extra components. Also usable for ATtiny84, ATtiny441 and ATtiny841.

03_TinyDev_ATtinyX4

Schematic/PCB: https://easyeda.com/Maxint/Mini-ATtiny44A-development-board

Watch this video to see how the module was made and tested:

Made: TM1640 LED matrix and ATtiny44 development module (too many PCBs?)

Programming

To program the ATtiny, I prefer to use the USBASP programmer (the version with a JP3 jumper for slow programming). The ISP connector on the board makes it easy to connect the programmer.

03_TinyDev_ATtinyX4

To program the ATtiny using the Arduino IDE you can use the ATTinyCore by Spence Konde (aka Dr. Azzy). It supports many ATtiny processors (1634, x313, x4, x41, x5, x61, x7, x8 and 828) for the Arduino IDE versions 1.6.5 and later (1.8.x recommended).