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by ryangd
Wed Jul 19, 2017 7:10 am
Forum: Automation, sensing and robotics
Topic: Using existing home ventilation system as basis total system
Replies: 3
Views: 608

Re: Using existing home ventilation system as basis total sy

Hi Dale, Thanks for the reply. The system is called Smartvent, the connected "app" part of it is called Evolve. Not sure what the components are, but it would be easy to find out I think. I'm definitely not up to the programming side of things, was really hoping there was an existing programme that ...
by ryangd
Mon Jul 17, 2017 12:56 am
Forum: Automation, sensing and robotics
Topic: Using existing home ventilation system as basis total system
Replies: 3
Views: 608

Using existing home ventilation system as basis total system

I recently bought a home ventilation system. It is relatively comprehensive system with temperature and humidity sensors in bedroom, lounge, roof space and outside. It can switch between sources to make it a positive pressure system or heat transfer depending on what the hottest/driest source is. Th...
by ryangd
Sun Sep 04, 2016 10:14 pm
Forum: General discussion
Topic: Automatic shutdown for pi in a car
Replies: 22
Views: 15633

Re: Automatic shutdown for pi in a car

Probably the most robust solution would be to use a system which doesn't need to be shut down cleanly. A system which runs completely out of ram would work. Or one which doesn't need a filesystem on the sdcard mounted read-write (readonly is ok). But actually in practice, just turning the power off...
by ryangd
Sun Sep 04, 2016 8:18 am
Forum: General discussion
Topic: Automatic shutdown for pi in a car
Replies: 22
Views: 15633

Re: Automatic shutdown for pi in a car

Your description is basically a UPS. I have one that works well for automotive use, see: http://www.allspectrum.com/mopower/ It has an onboard ADC that can read voltages from the input.. which allows it to shutdown and start your Pi based on these voltages. I use a 9v block battery on one in a car,...
by ryangd
Sun Sep 04, 2016 8:05 am
Forum: General discussion
Topic: Automatic shutdown for pi in a car
Replies: 22
Views: 15633

Re: Automatic shutdown for pi in a car

I have thought about hardwiring to the battery of the car so it never turns off but I need it to re-search for the network of my phone whenever I get back in the car. Plus eventually the battery would go flat Assuming that a below average car battery can provide 50 amp hours at 12 volts or 600 watt...
by ryangd
Sat Sep 03, 2016 1:17 am
Forum: General discussion
Topic: Automatic shutdown for pi in a car
Replies: 22
Views: 15633

Re: Automatic shutdown for pi in a car

That's a great idea. I didn't even know that was a thing.
I was hoping to just install libreelec as I don't know of any stand alone AirPlay apps
by ryangd
Sat Sep 03, 2016 1:03 am
Forum: General discussion
Topic: Automatic shutdown for pi in a car
Replies: 22
Views: 15633

Re: Automatic shutdown for pi in a car

I have thought about hardwiring to the battery of the car so it never turns off but I need it to re-search for the network of my phone whenever I get back in the car.
Plus eventually the battery would go flat
by ryangd
Fri Sep 02, 2016 9:23 pm
Forum: General discussion
Topic: Automatic shutdown for pi in a car
Replies: 22
Views: 15633

Automatic shutdown for pi in a car

I'm trying install a pi in my car so I can use it as an AirPlay receiver. I'd like to be able to run it through some sort of capacitor circuit so when it loses power when the car switches off it knows to shutdown properly. Has anyone ever done this before? I've seen a few tutorials to make a shutdow...

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