Tell us about yourself!
Thanks for your answers!!!!!
Thanks but I have another question. The HC05 RX module is connecting to the arduino RX, and TX to the arduino TX?
Thanks but I have the following questions:1.-Pump 1 is the + and pump 2 is the pump - or 1x 2-Pin Screw Terminal? 2.-If the 5V that feed the circuit can be only from the arduino or will I need another external source? 3.-I do not understand if the pin 13 of the arduino is connected to an element or not, and if so, what is?