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6998493174 99a5dfc9c5 z1 New in the Maker Shed: Arduino Mini R05

Arduino recently updated their small form-factor Arduino Mini and it’s now shipping from the Maker Shed. The Arduino Mini R05 is based on the same ATmega 328 processor as the Arduino Uno, but measures a scant 1.25″x0.73″ making it perfect for breadboards and embedded applications. The R05 update includes a new, smaller chip package and a revised PCB making it possible to fit all the components on the top of the board. It also features a reset button which was lacking in previous versions. Like the earlier models, the Mini R05 requires the use of an FTDI breakout such as the FTDI Friend for programming.

Technical Specifications

  • Microcontroller –  ATmega328
  • Operating Voltage – 5V
  • Input Voltage – 7-9 V
  • Digital I/O Pins – 14 (of which 6 provide PWM output)
  • Analog Input Pins – 8 (of which 4 are broken out onto pins)
  • DC Current per I/O Pin – 40 mA
  • Flash Memory – 32 KB (of which 2 KB used by bootloader)
  • SRAM – 2 KB
  • EEPROM – 1 KB
  • Clock Speed – 16 MHz

Michael Castor

I am the Evangelist for the Maker Shed. It seems that there is no limit to my making interests. I’m a tinkerer at heart and have a passion for solving problems and figuring out how things work. When not working for Make I can be found falling off my unicycle, running in adverse weather conditions, skiing down the nearest hill, restoring vintage motorcycles, or working on my car.


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