I have an Arduino R4 Wi-Fi for my projects, and i have 6 relay modules connected to 12v water pumps. When i was firstly trying to setup the project i just connected them all to Arduino's 5v output and...it failed. Right now i got 2 12v Duracell batteries and connected 3 of them to one of the batteries and 3 of them to other battery.
So i started thinking to get a laptop adaptor or something and solder it to somewhere and use it on breadboard to connect components but it was too dangerous for me and not that useful for this project.
So i started to think i need a Type-C module/board/connector whatever you call it. But i have no idea about Type-C connectors. All i know is the PD values and i think i need PD3.0's Profile 3 or 4 (which is 15V 3A / 20V 3A)
Do you guys have any sort of suggestions what i can buy for this project and any idea how to connect it to my board or breadboard?
A drawing of how you wired and powered the arduino, the relays, the pumps and which type of relay you used would go a long way... Pumps are inductive loads, did you have a freewheel diode to protect the relay / arduino ?
Are you thinking of running the pumps for just a few seconds and then off for a minute? Do you keep the pumps submersed in water while they are running?
They won't last long on 12V and you will find they create a lot of noise that interferes with the Arduino but if you want to run them at 12V it's up to you.
However I highly recommend that you run them at 6V or less, most people use 5V with no problem.
The reason why i give them 12V is, on higher voltages they pump more water. and for the project, the more water I can pump per second, is the better. There's might be a way to pump same water amount with 5v but i hasn't learned it yet.
