Little Bird
Two Colour LED Module
Check out our tutorial here There are three pins:Signal: This pin is a signal pin, and can be used to emit a green lightMiddle Pin : This pin is another si...
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There are three pins:
Signal: This pin is a signal pin, and can be used to emit a green light
Middle Pin : This pin is another signal pin, and can be used to emit a red light
GND: Though it is labelled '-' on the module, this is the ground pin also known as 'GND'. What is 'GND'? In electronics, we define a point in a circuit to be a kind of zero volts or 0V reference point, on which to base all other voltage measurements. This point is called ground or GND.
Voltage is the difference in electric potential between two points. As it is difficult to talk about voltage without a reference point, we need another point to compare it to.
You might have noticed an 'R1' on the module, this stands for 'resistor'. However, the resistor here is actually a 0Ω resistor, so we will need to use external resistors in the circuit!
Jargon buster
Plain-language definitions for the technical terms used above.
- GND
- GND is the ground or reference connection (0 V) for a circuit. When connecting two devices together, their grounds must be joined so both agree on what counts as a low or high signal.
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