A multimeter or a multitester, also known as a volt/ohm meter or VOM, is an electronic measuring instrument that combines several measurement functions in one unit.
The SG90 is a 9 gram servo motor that can rotate 0 – 180 degrees (roughly) at a rate of about 0.3 seconds (0.1s/60 degrees). The SG90 is used in low-cost projects, typically with motorized vehicles and robotic arms.
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