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.

Thursday, June 6, 2013

Technology Alternative - Raspberry Pi with External ADC


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

Raspberry Pi with External ADC

  • Raspberry Pi (Rpi) Hardware (50):
    • 700mhz ARM CPU
    • 512mb of Memory
    • Storage on Flash Card or USB
  • RPi Software:
    • Fully functional Linux implementation with Python as primary programming language.
    • Vast selection of software available to meet development requirements.
    • Extremely strong user community for support
  • External ADC chip integrated with the Raspberry Pi via I2C (a serial communications protocol)
  • Provides up to 18bit resolution for Analog to Digital Conversion 
  • Could provide user interface through one of several available LCD displays

The breadboard provides a voltage divider that uses a variable resistor to deliver a variable voltage for simulating a test measurement.  It is also supporting a tri-colour LED as a status monitor while a test is running. 
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