Temperature Sensor and
online logger


20-feb-2002

This little system will register the outside temperature, CPU temp, and the temp of the computer room. The data can be viewed online in a chart. the setup consists of easy components.
analog sensor -> a/d convertor -> RS232 Buffer -> logging program -> chart generation script.
component types: KTY10-6, TCL549, ICL232, linux C, PHP3 script

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Day 1: Test RS232
Day 2: draw schematics
Day 3: build prototype
Day 4: write software
Day 5: calibrate it
Day 6: documentation



prototype 1


ugly schematic



graph of monday 11 mar 2002 (first graph!)