HackingPhysics Journal Vol. 1 no 3: Low-Cost Precision Voltage and Temperature Measurements

For less than $10 you can build an incredibly powerful data acquisition system capable of measuring a microvolt change with a 1 second averaging time from four different channels. You can build this system in about 5 minutes and measure voltages up to 5 V with a noise floor as small as 1 uV with an absolute accuracy of 1 mV. When measuring a temperature sensor, this can translate into temperature changes smaller than 1 milli degC.

This issue of the HackingPhysics Journal shows you how to put this incredibly sensitive system together, how to avoid important artifacts and with all the sketches you need to get you started. It is the missing manual.

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