Remote monitoring : Temperature and light
This small telemetry application is very usefull in the sense that any temperature and light level can be monitored remotely.The project can read 4 temperature sensors and 2 photodiodes. The slave microcontroller is a 8 bit 20 Mhz PIC16C74 from Microchip. The PIC select which sensor to active thru a 8 position analog multiplexer (DG528 from Maxim) and convert the analog signal into a digital 14 bit wide signal thru the AD679 from Analog Devices. The data form the given sensor is sent back to the FIFO. The SX52 sends back the result thru ethernet frame to the PC.
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