Hi everyone,
I just wanted to start by saying I appreciate any help anyone can give on this topic as I am completely new to electronics/circuits etc.!
The project I am attempting to implement is wiring up a 10.1" LCD monitor that utilizes a control board with a Raspberry Pi 2 to my car's current power and head unit. I would like to convert the HDMI audio out to RCA R/L audio (which plugs into the rear aux port on the head unit via a R/L to 3.5mm cable that I already have). I'll like the main items below that I would like to use.
The problem is that I have no real understanding of electrical wiring or electricity in general so I wanted to get your opinions on the best (and hopefully cheapest) way to power the following items in my car. I have looked around a lot and tried to read about powering multiple devices with different voltage/amp requirements, but I can't seem to grasp or find a real answer to my specific situation.
Basically, I would really like to power all 3 of these devices from 1 power source (I am assuming 12v in the car somewhere that would only turn on when the car is running) and supply the appropriate voltage/amperes to each device as to not damage them. Also, I want to install some type of power switch or toggle on the Pi's power cable so it doesn't just shut off when the car does; I've done this on my home Pi and it works just fine.
Each of these seem to come with a standard ac adapter (US plug) but again it would be nice to power all 3 from 1 source.
From what I can tell, the different power requirements are: Monitor - 12V/2A; Raspberry Pi - 5V/2A; and HDMI Splitter/Converter - 5V/1A. I figure (guess) that this would really only require between 40-50 watts, 12V/6A or so? I'm just not sure and definitely not sure how to make sure I don't fry everything.
Oh and if it helps, this is in a 2002 Nissan Xterra that has an aftermarket JVC cd player/head unit that is spliced into the car speakers etc. (I've thought about adding one of those cheap back-up cameras too, but I don't want to complicate the power situation further right now hah)
Here are the items on Amazon (*Note: I would like to have 2A to the Pi because of the USB port power pulls):
Monitor: http://www.amazon.com/Resolution-Raspberry-including-Triggered-Automatic/dp/B00VE72DLC
Pi: http://www.amazon.com/Adapter--20-Guide--Clear-Case--Power-Supply--Kingston-Adapter--HDMI/dp/B00MV6TAJI/
HDMI Audio Converter: http://www.amazon.com/dp/B00KBHX072/
In case anyone is wondering, I want to split the audio from HDMI because the 3.5mm output on the Pi contains a lot of static etc. and I've read that this converter works great.
Any help is greatly appreciated!
Thanks!
Edit:
In response to Andrew below: Thanks - I did mean to mention that I have to keep the stereo in the car for sound (aux input) to the speakers coming from the adapter. So I'm really just relocating it and then running the L/R to 3.5mm cable to the head unit itself. I hope that makes sense!
As for the adapter, the monitor etc. all come with regular US plugs/adapters so I was wondering if I could splice those into 1 power source etc.
Thanks!
I just wanted to start by saying I appreciate any help anyone can give on this topic as I am completely new to electronics/circuits etc.!
The project I am attempting to implement is wiring up a 10.1" LCD monitor that utilizes a control board with a Raspberry Pi 2 to my car's current power and head unit. I would like to convert the HDMI audio out to RCA R/L audio (which plugs into the rear aux port on the head unit via a R/L to 3.5mm cable that I already have). I'll like the main items below that I would like to use.
The problem is that I have no real understanding of electrical wiring or electricity in general so I wanted to get your opinions on the best (and hopefully cheapest) way to power the following items in my car. I have looked around a lot and tried to read about powering multiple devices with different voltage/amp requirements, but I can't seem to grasp or find a real answer to my specific situation.
Basically, I would really like to power all 3 of these devices from 1 power source (I am assuming 12v in the car somewhere that would only turn on when the car is running) and supply the appropriate voltage/amperes to each device as to not damage them. Also, I want to install some type of power switch or toggle on the Pi's power cable so it doesn't just shut off when the car does; I've done this on my home Pi and it works just fine.
Each of these seem to come with a standard ac adapter (US plug) but again it would be nice to power all 3 from 1 source.
From what I can tell, the different power requirements are: Monitor - 12V/2A; Raspberry Pi - 5V/2A; and HDMI Splitter/Converter - 5V/1A. I figure (guess) that this would really only require between 40-50 watts, 12V/6A or so? I'm just not sure and definitely not sure how to make sure I don't fry everything.
Oh and if it helps, this is in a 2002 Nissan Xterra that has an aftermarket JVC cd player/head unit that is spliced into the car speakers etc. (I've thought about adding one of those cheap back-up cameras too, but I don't want to complicate the power situation further right now hah)Here are the items on Amazon (*Note: I would like to have 2A to the Pi because of the USB port power pulls):
Monitor: http://www.amazon.com/Resolution-Raspberry-including-Triggered-Automatic/dp/B00VE72DLC
Pi: http://www.amazon.com/Adapter--20-Guide--Clear-Case--Power-Supply--Kingston-Adapter--HDMI/dp/B00MV6TAJI/
HDMI Audio Converter: http://www.amazon.com/dp/B00KBHX072/
In case anyone is wondering, I want to split the audio from HDMI because the 3.5mm output on the Pi contains a lot of static etc. and I've read that this converter works great.
Any help is greatly appreciated!
Thanks!
Edit:
In response to Andrew below: Thanks - I did mean to mention that I have to keep the stereo in the car for sound (aux input) to the speakers coming from the adapter. So I'm really just relocating it and then running the L/R to 3.5mm cable to the head unit itself. I hope that makes sense!
As for the adapter, the monitor etc. all come with regular US plugs/adapters so I was wondering if I could splice those into 1 power source etc.
Thanks!
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