XO Peripherals

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Peripherals Overview:

The 10 cent O'Scope Adaptor

see: Oscilloscopeadaptor

The 25 dollar BioSign/TeleHealth

see: TeleHealth Module

The 100 dollar Projector

  • Ultrabright LEDs
  • High resolution, high colour LCD
  • Diverging Lens?
  • USB to LCD processing ICs
    • USB micro controller
    • USB to digital graphics converter
    • LCD controller

The 50 cent AM radio receiver

  • MK848
  • Analog processing for control of tuning cap
  • tuning cap
  • ferrite
  • coil
  • USB powered

The 1 dollar AM radio transmitter

  • Crystal or Ceramic Resonator
  • audio transformer for modulation
  • USB powered

How to do it

  • Via an AVR micro controller with USB, ADC, and/or DAC
    • avr-gcc, avr-libc and avrice
  • Via the 5v@500ma offered per USB port, with a total of 1A
    • Soft limit via power rail; it is not necessary to follow proper USB 2.0 protocol and/or complete a USB handshake
  • Via the mono mic-in/stereo audio out, see Audio Hardware
  • Via the unused channels on the AD188 chip
  • Via the Measure / Oscilloscope Activity

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