Ok I have searched the forums briefly and have found some old sorta related posts, but I have a different approach I think.
What I would like to do is extend the range of my existing remote start. I have an extra key Fob. What I want to do is text the Arduino via the cellular Shield, and then have it to press the button for the autostart. This would not modify the existing system in any way. All safety's preserved.
I don't want to start an engine life debate, or discuss global warming, just the logistics of making an Arduino do the above.
Maybe I text the GSM modules number with START TRUCK, and then it would press the start button twice which is what I have to do now. Maybe some feedback saying that it has done so could be as simple as monitoring the 12volt line at the accessory outlet and wait for it to go above 12.5 volts which would indicate that the alternator has kicked in. Then a reply saying TRUCK STARTED or something along those lines.
Feasibility?
Here is the shield that sparked this project. Ps Bluetooth is not an option as I'm looking for greater range.
I am looking to sorta duplicate what my onstar app does now on my Chevy truck.
When I say press the button, I of course mean close a relay that I have soldered where the button used to be in the fob that I'm going to modify.
Not that it should matter in any way, but the vehicle is a 2013 Dodge Ram 1500 with the Hemi. Gasoline model
Thanks in advance, useful contributions only please, I have seen how people high jack these discussions in other posts, and I'd prefer to stay on topic if at all possible. Thanks again for reading.
I don't see any reason why it won't work. Should be an easy project. But why use the key FOB? Why not just splice into the ignition in the truck? Just a thought.
If you need more specific answers, we would need more specific questions.
I would use a fob so I didn't have to modify the truck.
The feature I want with all the safety's and overrides is already in place, why reinvent?
So I guess since this is doable, where do I start? I mean I'll order that GSM module if you think that one will work, as direct from China meets the budget concerns.
Is there a library somewhere that I can look at/ use to get me started?
Is there a more suitable shield for what I am trying to do?
Do you see a problem with using my existing fob? Is there a reason that I may want to wire directly?
I was thinking that with the fob I can also implement the panic/horn and lights as a long range locator, and obviously the lock/unlock feature for the doors.
The replacement fobs are like $100 if I ever need to sell the truck. So unmodified seems like a better route to go. Thoughts?
michaeli:
I would use a fob so I didn't have to modify the truck.
The feature I want with all the safety's and overrides is already in place, why reinvent?
I am not implying to reinvent, but to just hack the button that you push to start it. But it's your project. Doesn't matter I guess.
So I guess since this is doable, where do I start? I mean I'll order that GSM module if you think that one will work, as direct from China meets the budget concerns.
You didn't specify what module you're getting, but any GSM module or shield would work as long as it sends and receives text.
Is there a library somewhere that I can look at/ use to get me started?
There are quite a few libraries for GSM, just search Google and pick the one you feel will meet your needs.
Is there a more suitable shield for what I am trying to do?
Well, only a GSM module or shield will send text messages..
Do you see a problem with using my existing fob? Is there a reason that I may want to wire directly?
Again, you didn't specify what key FOB you have. But most have buttons integrated on the PCB which makes it hard to connect a wire.
The replacement fobs are like $100 if I ever need to sell the truck. So unmodified seems like a better route to go. Thoughts?
OK. Don't know what relevance this statement has on the current topic.