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A compact (35 mm x 70 mm), low voltage, battery powered Arduino-compatible board with onboard wireless capable of ranges up to 120 m. The Wireless Widget was designed for both portable and low cost Wireless sensor network applications. Whisper Node AVR [220] ATmega328P Wisen - Talk²: A real ultra-low power board, capable of running of a single AA.
A compact (35 mm x 70 mm), low voltage, battery powered Arduino-compatible board with onboard wireless capable of ranges up to 120 m. The Wireless Widget was designed for both portable and low cost Wireless sensor network applications. Whisper Node AVR [207] Wisen - Talk 2: ATmega328P A real ultra-low power board, capable of running of a single AA.
ATtiny2313 in 20-pin narrow dual in-line package (DIP-20N)ATtiny (also known as TinyAVR) is a subfamily of the popular 8-bit AVR microcontrollers, which typically has fewer features, fewer I/O pins, and less memory than other AVR series chips.
ATmega328 is commonly used in many projects and autonomous systems where a simple, low-powered, low-cost micro-controller is needed. Perhaps the most common implementation of this chip is on the popular Arduino development platform, namely the Arduino Uno , Arduino Pro Mini [ 4 ] and Arduino Nano models.
A typical IEPE sensor supply with 4 mA constant current and 25 V compliance voltage has a power consumption of 100 mW. This can be a drawback in battery powered systems. For such applications low-power IEPE sensors exist which can be operated at only 0.1 mA constant current from a 12 V supply. This may save up to 90 % power. [4]
Low power, low bit rate, and intended use distinguish this type of network from a wireless WAN that is designed to connect users or businesses, and carry more data, using more power. The LPWAN data rate ranges from 0.3 kbit/s to 50 kbit/s per channel.
The fundamental feature of the MSP430 is low power consumption. The first MSP430s (MSP430C3xx) had a consumption around 400 uA/MHz and less than 2 uA in low-power mode with active basic timer and LCD driver. The more recent MSPs (MSP430FR5xx) have active mode consumption around 100-120 uA/MHz and 500 nA in low-power mode with active RTC.
A microcontroller is often used in many sensor nodes due to its low cost, flexibility to connect to other devices (or nodes in a network), ease of programming, and low power consumption. A general purpose microprocessor generally has a higher power consumption than a microcontroller, making it an undesirable choice for a sensor node.