Tommyb10
Posts: 5
Joined: Wed Aug 27, 2014 5:44 am

Car power switch

Wed Aug 27, 2014 6:49 am

So I am building myself a little gps system for my car and am planning on using a pi to drive it, however the constant power on and off is making me worried about corrupting the sd card.

I saw the Mausberry car switch and it looked perfect, however it's out of stock :(

Does anyone have any other inexpensive solutions to gracefully shutdown the pi when power is cut?

Thanks!

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kusti8
Posts: 3439
Joined: Sat Dec 21, 2013 5:29 pm
Location: USA

Re: Car power switch

Wed Aug 27, 2014 1:57 pm

There are 10 types of people: those who understand binary and those who don't.

DirkS
Posts: 10127
Joined: Tue Jun 19, 2012 9:46 pm
Location: Essex, UK

Re: Car power switch

Wed Aug 27, 2014 2:15 pm

IIRC the Mausberry switch is actually a different. See https://mausberry-circuits.myshopify.co ... ply-switch.
The Pi is powered by the permanent 12v supply. When the ignition is switched off, the the Pi gets a signal to shut down.
So you don't really need a battery backup...

Gr.
Dirk.

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BostonDev
Posts: 5
Joined: Sun Jun 08, 2014 5:13 pm
Location: Boston, MA
Contact: Website

Re: Car power switch

Fri Aug 29, 2014 12:19 am

I use the Pi UPS out of Germany. When it detects a power loss, it acts like a UPS and sends a safe shutdown signal to your Pi.

Given you're building a GPS for the car, check out Black Box Pi. I've built an open source black box for the car using a Pi that logs GPS, OBD2, and more.

http://www.blackboxpi.com/

Tommyb10
Posts: 5
Joined: Wed Aug 27, 2014 5:44 am

Re: Car power switch

Wed Sep 10, 2014 3:47 am

BostonDev wrote:I use the Pi UPS out of Germany. When it detects a power loss, it acts like a UPS and sends a safe shutdown signal to your Pi.

Given you're building a GPS for the car, check out Black Box Pi. I've built an open source black box for the car using a Pi that logs GPS, OBD2, and more.

http://www.blackboxpi.com/
Wow I love the work your doing! I will defiantly look into setting it up on mine

I was mainly looking for a cheaper option as the pi ups is approx $50 AUD and the mausberry circuit was going to be only $15 or so, but looks like I will have to go with the pi ups option, which will probably be better in the long run.

Now it's time to look for some good looking gps software to run

fruitoftheloom
Posts: 21617
Joined: Tue Mar 25, 2014 12:40 pm
Location: Delightful Dorset

Re: Car power switch

Wed Sep 10, 2014 4:24 am

Tommyb10 wrote:Now it's time to look for some good looking gps software to run
http://www.raspberrypi.org/forums/viewt ... 41&t=70517

http://www.engineering-diy.blogspot.ro/ ... pdate.html
Retired disgracefully.....
......to a more gentile life !

Tommyb10
Posts: 5
Joined: Wed Aug 27, 2014 5:44 am

Re: Car power switch

Wed Sep 10, 2014 4:39 am

fruitoftheloom wrote:
Tommyb10 wrote:Now it's time to look for some good looking gps software to run
http://www.raspberrypi.org/forums/viewt ... 41&t=70517

http://www.engineering-diy.blogspot.ro/ ... pdate.html
I have looked at this setup, but I can't seem to find a good osd layout for my 800x480 display :( I'm gonna mess around with some custom ones though, was just hoping there might be some different nav software that looks nice, but there isn't that I have found

DJFriar
Posts: 3
Joined: Thu Feb 19, 2015 4:59 am
Location: Plano, TX

Re: Car power switch

Thu Feb 19, 2015 2:20 pm

BostonDev wrote:I use the Pi UPS out of Germany. When it detects a power loss, it acts like a UPS and sends a safe shutdown signal to your Pi.

Given you're building a GPS for the car, check out Black Box Pi. I've built an open source black box for the car using a Pi that logs GPS, OBD2, and more.

http://www.blackboxpi.com/
Is there any update on your setup? I saw you were starting a motorcycle version, did that get completed?

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