XO Peripherals

Peripherals Overview:

The 10 cent O'Scope Adaptor

see: Oscilloscope adaptor

The 25 dollar BioSign/TeleHealth

see: TeleHealth Module

The 100 dollar Projector

• Mary Lou may already have a design for this --DyD
• 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 25 dollar USB measuring unit and sensors

see: Technical specification

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

Other Pages

• USB Peripherals
• Fun hardware
• Hardware Power Domains
• USB ethernet adaptors