Introduction The idea behind a battery powered night light came from my realization that my bedside cabinet was already cluttered by a few electrical appliances, like a lamp, a radio, and a smartphone power adapter, and fumbling around while searching the light switch usually caused something to drop onto the floor. A night light usually ..
Introduction Outdoor IoT solutions depend on a long lasting and stable power supply, but where to find in the wilderness? What immediately comes into mind is battery power, but due to the incompatability between battery voltages and supply voltage of IoT modules like Arduino or ESP8266, a voltage converter is usually part of the circuit, ..