Category Archives: Electronics

Arduino Nano v3 internal temperature sensor

Posted on 19 April 2011 by iwi

Calibration data: Download data & formulas in excel. Atmega documentation says: The voltage sensitivity is approximately 1 mV/°C and the accuracy of the temperature measurement is +/- 10°C. Measured temperature is a sum of ambient temperature and chip’s TDP. In … Continue reading →

Posted in Arduino, C++, Electronics | 8 Comments

Voltage Drop Protection

Posted on 16 February 2011 by iwi

DC motor drive circuit with automatic load regulation. Main concept is to cut off power from DC Motor and sustain the voltage in the circuit. Also detect low-battery state. Components: #1 – Dual Op-Amp CA158 (Like LM358) #1 – Trimmer … Continue reading →

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