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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.
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.
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.
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.
To address this issue, some modern low-power circuits use dual supply voltages to improve speed on critical paths of the circuit and lower power consumption on non-critical paths. Some circuits even use different transistors (with different threshold voltages) in different parts of the circuit, in an attempt to further reduce power consumption ...
The debugWire interface enables debugging using only one pin (the Reset pin), allowing debugging of applications running on low pin-count microcontrollers. The JTAGICE mkII connects using USB, but there is an alternate connection via a serial port, which requires using a separate power supply.
By the mid 2000s open-source hardware again became a hub of activity due to the emergence of several major open-source hardware projects and companies, such as OpenCores, RepRap (3D printing), Arduino, Adafruit, SparkFun, and Open Source Ecology. In 2007, Perens reactivated the openhardware.org website, but it's currently (February 2025) inactive.