I have the following:
Arduino Mega 2560
Ethernet 2 shield
2 relays (like the one included)
Lcd 20x4 with I2C (PCF8574)
The Ethernet shield is obviously connected to the arduino mega.
The 2 relays and the LCD is wired to the onboard 5v pin and ground for power.
Is this too much current to draw from one 5v pin ?
I have read that 20mA should be the limit.