The very popular 595 shift register chip of the 74 series is used a lot by hobbyis because of its wide availability, good speed and simplicity. Just plug it on an arduino like shown in the tutorials and youi have 8 more outputs, put two and you have 16 more outputs ! (up to a lot of them actually, with only three pins !)
Output Power: Min 2.5mW, Typical 3.0mW, Max 5.0mW
Working current: Min 10mA, Typical 20mA, Max 25mA
Working voltage: Min 2.3VDC, Typical 4.5VDC, Max 8.0VDC
Working Temperature: Min -15C, Typical 25C, Max 35C
Storage Temperature: Min -20C, Max +25C
Focused Dot width: <2mm spoting 3 meters away.
The ADXL345 is a small, thin, low power, complete 3-axis accelerometer with signal conditioned voltage outputs. The product measures acceleration with a minimum full-scale rangethe static acceleration of gravity in tilt-sensing applications, as well as dynamic acceleration resulting from motion, shock, or vibration.
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