Arduino Uno + Sim900 + Rele 5V - 220 + HIGRÓMETRO FC-28

Other Hardware General Electronics
1

Hi people, im develop on proyect where combinate Arduino Uno + Sim900 + Rele 5V - 220 + HIGRÓMETRO FC-28.
In ardino have one pin 5 voltios, im manufactured one cable whith 2 point Boy and 1 point Girl.
When i try to load de arduino, the software tell me error, arduino not exist in com27.
Im remove de Rele and the Arduino IDe load de software to de Arduino.

i think that de problem is not enough electric for all.

I have external alimentacion for arduino.

Thanks,

2

The max power output for and Arduino pin is 40mA, exceeding this number can cause several problems. Also when your using a relay and connect it directly to an Arduino pin you could get problems caused by the EMF from the relay. What kind of external power are you using?

With Regards

Mike