Good afternoon, I should check the presence or not of voltage in a 12/24v system (approximately 20 switches), I don't have to control them but only check their status, it is possible to use in reverse mode (read) a cheap china IO Isolated module whit RS485
to have as few cables as possible I would like to take advantage of the serial connection to manage these switches that I would like to show on a monitor, I would like to ask you if this is feasible for you or are there other ways to do this..
thanks a lot
thaks a lot for the reply, in fact it is input, I don't know if the Chinese manufacturers mean input and that's it or if it can actually be used as an I/O too, I tried to use uctocupler as a voltage analyzer with Arduino Uno, but here things are very different, there is the serial protocol involved and in fact I already have to use a PNP board
I'm not able to understand from description, but from the image I could expect it having outputs as well. Looks like there is four 8ch transistor array chips.
To ensure we can provide the most accurate assistance, please include detailed information about your setup. Specify the exact wiring configuration, and power sources you are using. An annotated schematic is ideal, as it provides a clear overview of your setup, but be sure to also include links to the technical specifications of your hardware components.
sorry, the use of this is to make a new dashboard in a late 90's iveco army truck, the engine control (rpm/allarms ecc.) arrive from canbus the rest from analogic switchs,
I would like to manage the canbus with a serial, group the analog ones and make another serial,
for now I haven't even thought about making drawings, I'm still in the setup phase to understand the feasibility first of all
Professionals and experienced individuals put the horse before the cart, while amateurs do the opposite.
The first step is to create a simple schematic to understand what you have. Then, design what you want to achieve. Once you have a clear plan, start researching how to build it. Be sure to document the CAN messages thoroughly; without this, your project is doomed to fail.
actually you are right, now I prepare the drawings, at the moment I have set up an arduino uno as a dummy motor, which sends via tx serial data to the arduino mega, everything works, fortunately the bosch edc control unit uses an iso protocol already widely defined... now I just need to manage the analog part