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Items 1 to 12 of 57 total
Here is the simplest sound making module. You can use high/low level to drive it. Changing the frequency it buzzes can produce different sound.
This module uses a ultra-bright infrared (IR) LED and a phototransistor to detect the pulse in your finger. The red LED then flashes in time with your pulse.
This LED module is of high brightness because the lamp beads it carries is 3w. We can apply this module to Arduino projects. For example, intelligent robots can use this module for illumination purpose.
ACS712-5A Current Sensor is used to measure the intensity of current. It contains ACS712ELC-5B chip, based on Hall Effect. You should protect it from influence of magnetic field when using it.