XO Peripherals: Difference between revisions
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* audio transformer for modulation |
* audio transformer for modulation |
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* USB powered |
* USB powered |
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==The environmental monitoring dongle== |
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* CDS |
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** Generic |
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* Thermometer |
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** MCP9700 |
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* Humidity |
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=How to do it= |
=How to do it= |
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* [[Hardware Power Domains]] |
* [[Hardware Power Domains]] |
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* [[USB ethernet adaptors]] |
* [[USB ethernet adaptors]] |
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* [[Measure]] |
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[[Category:Hardware ideas]] |
[[Category:Hardware ideas]] |
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Revision as of 22:04, 17 October 2007
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
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
The environmental monitoring dongle
- CDS
- Generic
- Thermometer
- MCP9700
- Humidity
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