Power Driver Shield Kit

is there any precaution to have when use something like:

Solenoid valve like http://www.ceme.com/prodotti_2.php?id_liv=1&id_liv2=4&id_liv3=8&id_prod=47
and this Heating Pad - 5x10cm https://www.sparkfun.com/products/11288 ???

On Power Driver Shield Kit from sparkfun https://www.sparkfun.com/products/10618??

it seams it don´t flow properly.

I´ve solder one wire from VIN to 12v on shield to get the power from arduino adapter, is it bad?

Want to make build my egg incubator :grin:

thanks for u reply, really don´t have any idea for this...



the solenoid valve operates on 230Vac according to the data sheet. You can't use that board for the solenoid valve, but should easily drive the heater.