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Published byValentine Smith Modified over 9 years ago
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Aarthi Balachander Daniel Jiang Drew Schuster Ryne Rayburn
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Microcontroller Jennic 5148 will be replaced with LPC2377 (availability of development kit) LPC2377 has no wireless module: adding two XBee RF Modules (ZigBee protocol) AD5174 – 1024 Position Potentiometer (SPI) Regulators – LM317 and LM7805
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HM2007 and external components are relatively large Includes 64k of SRAM Speech recognition kit comes with a PCB Plan to reuse the majority of the components on this PCB Both to save space and keep our PCB simple, will connect HM2007 PCB to ours (header on our PCB)
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Require splitting our PCB into a base station PCB and receiving station PCB Each will be 3.5in x 3.5in (rough estimate) Headers to HM2007 PCB and LCD placed on right and bottom edge PCB’s will be layered; LCD on side of package ADC and DAC used; want to separate analog and digital grounds to avoid noise in audio
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XBee module placed in corner, away from other IC’s to minimize interfering w/other devices Potentiometers and Audio Codec placed near each other and near edge for access to jack Separate devices that use analog signals (potentiometer, codec, amplifier) from others Keep decoupling capacitors close to their respective IC’s
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Analog Micro Regulator Circuit Wireless XBee Module Headers 3.5 inches
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