Temperature data logger using PIC12F683 and DS1820

Rajendra over at Electronics Lab wrote an article on his temperature logger based on a Microchip’s 8-pin microcontroller, PIC12F683:

A data logger is a device that records measurements over time. The measurements could be any physical variable like temperature, pressure, voltage, humidity, etc. This project describes how to build a mini logger that records surrounding temperature values. It has following features:

• Uses just one 8?pin chip, so very compact size circuit
• Temperature range: 0 to +125°C
• Can store up to 254 measurements
• Sampling interval options: 1 sec, 1 min, 10 min
• Reset feature to clear all previous measurements
• Serial transfer of recorded measurements to a PC
• Three tactile switches for user inputs and a LED indicator