This is a 5mm Yellow LED. Light Emitting Diodes (LED) are the blinky things in your circuit. Its a must for indicating power in your project or as warning indicator or a status indicator. We use LED's for things like Power indication, relay status, to check if RF data has been received or not, warning status etc. It is a perfect low cost solution for indication and debugging purpose.
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This is a 5mm Yellow LED. Light Emitting Diodes (LED) are the blinky things in your circuit. Its a must for indicating power in your project or as warning indicator or a status indicator. We use LED's for things like Power indication, relay status, to check if RF data has been received or not, warning status etc. It is a perfect low cost solution for indication and debugging purpose.