arduino power source

Projects General Guidance
1

I have a problem with a power source to arduino.
If I plug the power source to the power conetor the lcd and the leds became more weaker.
If i plug to the computer by usb and disconeted the other problem is resolved.
Is normal to hapen this?
The power source is 24vdc / 5vdc.

2

Probably low voltage. 5VDC is not enough to supply Arduino via barrel jack. There is diode on input which is decreasing voltage about 0.7V Try 6V at least but not more than 9V otherwise regulator will become too hot under higher current drain (400-500mA).

3

josefransilva:
I have a problem with a power source to arduino.
If I plug the power source to the power conetor the lcd and the leds became more weaker.
If i plug to the computer by usb and disconeted the other problem is resolved.
Is normal to hapen this?
The power source is 24vdc / 5vdc.

If the 5V power is regulated, use the Vin and Gnd pins.

4

Not Vin - that still goes thru the regulator. Use 5V and Gnd pins on the Power header.

5

CrossRoads:
Not Vin - that still goes thru the regulator. Use 5V and Gnd pins on the Power header.

Of course.
More haste, less speed was my problem.