Evolution of a Blog

This blog has evolved as I have as a maker. It starts at the beginning of my journey where I began to re-tread my tires in the useful lore of micro electronics and the open-source software that can drive them. While building solutions around micro-electronics are still an occasional topic my more recent focus has been on the 3D Printing side of making.

Tuesday, June 4, 2013

Technology Alternative - Arduino Uno with Simple LCD Display

This post is part of a thread titled "What Technology to Choose for a Physical Interface Project"

Arduino Uno with Simple LCD Display

  • Hardware:
    • Arduino Uno (15),
    • SD Card Shield (15),
    • Screwpoint Adapters (10),
    • LCD with Keypad Shield (10)
  • Microprocessor:
    • Flash Memory - 32 KB (ATmega328) of which 0.5 KB used by bootloader
    • SRAM - 2 KB (ATmega328)
    • EEPROM - 1 KB (ATmega328)
    • Clock Speed - 16 MHz
  • Software:  Arduino sketches written in C++ and downloaded to the microprocessor from a workstation.
  • Supports 10bit resolution for Analog to Digital Conversion (external adapter can be added for higher resolution).
  • SRAM limits board to taking 125 fixed time slice samples per second (assuming no updates of the LCD during sampling).
  • LEDs could be used for indicating status during a capture (blink each second).

The breadboard provides a voltage divider that uses a variable resistor to deliver a variable voltage for simulating a test measurement.

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