I made a 7 segment counter where I used 90 Leds al together to make the counter. It was going well but the Microcontroller gets too hot within few minutes.
Will it cause any problem ?
Yes.
Further details of the problem when you say how it is wired and powered and what current the LEDs are drawing.
I don't know how you exactly attached the led's to your controller. A solution can be to take a bigger resistor so you lower the current in your circuits. The side part of this is that your LEDs will be less bright then they where before.
Best regards
Timothy B
madindra1:
Will it cause any problem ?
Yes.
@madindra1, please do not cross-post.
a schematic is needed. just how is the power for the LEDs connected ?
are you trying to use the Arduino to power the LEDs ?
are you trying to use the Arduino to handle the power from the LEDs ?
you should be controlling something. mosfet, transistors, lighting chip.... something else that handles the power
AND the power for the LED's needs to be directly to the power supply, not from the Arduino.
90 LEDs at 20mA each would be 1.8 amps...
The microcontroller has maximum limits for each pin and also maximum overall current
limits - you need to keep within these limits to avoid damage.
Info on the pin limitations on the ArduinoInfo.Info WIKI HERE:
The silence from the OP is deafening - I think we embarrassed him. 