Source codes
Please be sure that you have read the How to? section and that you downloaded Arduino IDE from this page - this installation contains necessary libraries.
-200 to 1400 °C demonstrational thermometer with LED displaySimple and cheap thermometer with LED display, -55 to 100 °C
Demonstrational pH-meter with LED display
Demonstrational pressure/vacuum gauge with LED display
Demonstrational stopwatch with matrix LED display
Demonstrational stopwatch with LED display
-200 to 1400°C thermometer
Liquid nitrogen or flame of Bunsen burner? No problem! 1.2" LED display easily legible from any place in class.
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