Hello, I need to connect arduino to my car and I need a little bit of help because I don't want to fry the stereo.
I have no remote wire because stereo is controlled via can bus and my lighter socket is always on, but I have electric antenna out on my stereo and I already have my amp connected to it and it works.
Now arduino can take up to 1A of current so this is a no go for antenna out.
Can I use e-antenna out for powering relay's coil so I can use a relay to turn arduino on and off?
And I have read somewhere that it is good idea to connect flyback diode to the coil to provent popping from speakers and risk to damage stereo because of voltage spikes? (I have seen them turned right way + to + and - to -, and some of them reversed, how I should turn it)?
How many current can electric antenna out provide?
Thank you for anwsers!
I have no remote wire because stereo is controlled via can bus and my lighter socket is always on, but I have electric antenna out on my stereo and I already have my amp connected to it and it works.
Now arduino can take up to 1A of current so this is a no go for antenna out.
Can I use e-antenna out for powering relay's coil so I can use a relay to turn arduino on and off?
And I have read somewhere that it is good idea to connect flyback diode to the coil to provent popping from speakers and risk to damage stereo because of voltage spikes? (I have seen them turned right way + to + and - to -, and some of them reversed, how I should turn it)?
How many current can electric antenna out provide?
Thank you for anwsers!
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