Signal to H-Bridge used to control IR Source On/OFF {1/0} Connects to T1IN of MAX232 device. Provides RS232 data output for system. SPI Serial Data Output pin that connects to the Microchip MCP4822 DAC device SPI Clock Output to Microchip MCP4822 SPI DAC device
SPI-DAC A Microchip MCP4822, Digital to Similarity Converter with SPI port and interior action connects the dsPIC30F soul to the buffer amplifiers. This emblem takes a 12 bit bid over the SPI attach. The SPI is falsehood for a 16 bit express transfer using a 7.3728MHz clock.
The round 12 bits of the language are aggregation and the bunk nibble are test bits. One of these essay bits is victimized to select one of the two DAC circuits in the pattern. DAC turnout A (pin 8 ) controls the grade of the IR Led piece DAC product B controls (pin 6), the RED emitter.
HARDWARE
- DIGITAL SIGNAL CONTROLLER
- dsPIC30F2012
- SYSTEM CLOCK
- TIMER T1, TIMER T2
- INPUT CAPTURE 1
- SPI MODULE
- UART MODULE
- DIGITAL I/O
- DIGITAL OUTPUTS, DIGITAL INPUT
- LED DRIVER CIRCUIT
- LED MODULE
- H-BRIDGE
- BUFFER AMPLIFIERS
- SPI-DAC
- DIGITAL CONTROL BITS
- LIQUID CRYSTAL DISPLAY
- R/*W INPUT
- RS INPUT
- ENABLE
- COMMUNICATIONS PORT
- SWITCH INPUT
- LTF SENSOR
- LED EMITTERS
- MOUSE CABLE
- VELCRO CONSTRUCTION
SOFTWARE
- MEASUREMENT STRATEGY
- LOWPASS FILTER
- DIFFERENTIATOR (HIGH PASS FILTER)
- DC TRACKING FILTER
- PEAK FOLLOWER
- HEARTBEAT/SpO2 CALCULATION
- SIMPLE MOVING AVERAGE FILTER
Password: 320volt.com
Published: 2010/05/24 Tags: dspic projects, microchip projects, microcontroller projects
dsPIC30F4012 controls spectro meter 10 bit adc ir fft
Detailed Description – FFT Double Beam Infra-Red Spectrophotometer This original FFT double-beam IR spectrophotometer measures IR irradiation to identify varied chemical molecules. A dsPIC30F4012 controls the spectrometer with FFT algorithms. The 10-bit ADC on the DSPIC30F4012 has the cognition to use VDD and VSS as references so you don’t requirement a secernate voltage write.