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To begin To begin Your Car Along with your Cellular phone
To begin to begin your car out of your phone
In this article I’ll show you how to begin your car from your cellular phone. I already had a car starter installed in my truck years ago but the range was terrible and also you had to press the button for a precise amount of time, otherwise it will just ignore it. So instead of pressing a button all day long from 10 feet away I decided I wanted to begin my truck from anywhere on the planet! I built this a number of years ago, and a few newer products have come out that integrate cell phones with vehicles, but this still works for older vehicles, and may also be adapted to many other sorts of appliances as well.
This is not just limited to vehicles. Many DIY types have attached these to their cabin’s furnace, aircraft pre-heaters, irrigation pumps on farms, servers, routers, and all sorts of other appliances and electronics.
-GSM activated relay. This device will contain a SIM chip that may connect with the GSM cellular phone network. It is relays must be capable to be activated by phone call or text message. In my first build I used a GSM-AUTO, but found a cheaper alternative on eBay for the Quad Band version (North America) or the Dual Band (Europe, Asia, etc.). it costs around $150 which has 7 relays. Another alternative is to purchase from the net store called Relay Supply. One relay is controlled by phone call and the remainder are activated by text message. The relays may be set as either momentary or latched.
-Car Starter Key Fob (the remote control thing in your keychain).
-12V DC cigarette power cord
-Small plastic bag or ESD bag.
-A couple of wires.
-A few screw drivers
Begin with canabalizing the key fob. Instead of consuming considered one of my existing remotes, I turned to eBay. I found the model number of mine on the back. Its an Auto Start 05-A433. I entered this in on eBay and up popped a bunch of used key fobs which can be compatible with my system. WARNING: Some of these remotes may look exactly just like the one you want but they arrive in lots of revisions. Some revisions usually are not compatible with others. If you are undecided which to buy on eBay, try buying one new online.
You will have to sync your remote with your car starter. As all car starters and car starter installations are different, I won’t go into detail on how to do that. Whoever installed your car starter can usually do it for a fee but I strongly recommend you Google for the models manual as its a rather simple process. It usually involves either depressing the hood pin in a selected fashion (a pin that detects if your hood is popped), or pressing a button on the side of the remote starters brain under your dash.
Now remove any screws from the case and pry it apart. The circuit inside and battery aren’t secured in any way and came out easily.
Find the button that corresponds to the “start” button on your remote. Some remotes can require a mix of buttons to be pressed in a certain order, or multiple buttons pressed at the identical time. This can be accomplished by soldering up two connections which can be both wired through the relay (for multiple button presses) or a capacitor may be added to time delay considered one of buttons.
The contact in the center of this picture is already powered. When a user pushes the button, the connection is made between the interlocking contacts (they look like interlocking letter E’s) and the starter signal is distributed. We shall be soldering one wire to every corner of the contact. This takes an excessive amount of precision to ensure that you don’t join the two contacts.
Next, solder a wire onto each connector that supplies power to the remote. Color coding the wires is a good idea. This remote takes a small but powerful 12V battery. Note that in case your remote can’t handle this high of voltage (some cigarette lighters can pump out around 15V so be sure that the remote can handle this), you will have to continue using the present battery.
The GSM Relay has 7 relays. The primary is controlled by phone call. When called, the relay will open for a set amount of time that may be programmed into the device by text message. Mine is about for 1200 milliseconds.
I might recommend wiring the power cables into the device first. Take the 12V DC cigarette power cord and strip the ends of the cables and slide the cable through one of many ports on the side of the device. These ports could be tightened to make sure the device is weather proof. I fed the wire through the port closest to the ability connector, but if your wires are higher gauge this may be difficult. Consider running the wire through the far port. The remote key fob will remain contained in the device and its wires won’t be run through on of the ports.
GND (ground) is clearly marked as the top most connector. Wrap the negative (black) wire from your remote key fob across the negative cigarette power connector wire and feed it into the GND connector. Screw it down tightly to ensure a solid connection.
Wrap the positive (red) wire out of your remote key fob across the positive cigarette power connector wire and insert it into the +12V connector on the GSM device. Screw it down tightly and test both wires for looseness.
Next, run the wires from our “start” button into the relay controlled by phone calls. Each relay is just a pair, with the primary relay being controlled by phone call, and the remainder being controlled by text message. Push the wires into each connector and screw them down tightly. Remember, the remote will reside throughout the GSM devices case, so do not run the wire through one of the case ports.
Once this is completed, consider sliding a small plastic bag or ESD bag over the remote key fob to forestall any shorts.
Slide back the metal bracket covering the SIM chip holder to allow it to pop up. Insert the SIM chip as shown and press it down again, securing the metal bracket to hold it down.
The GSM device has 3 LED’s on it:
-One for network connectivity. This LED won’t turn on for the primary 10 seconds, and then will blink quite fast when the device initializes. The rapid blinking means its trying to find a network to connect with. Once it establishes a connection (this can only occur if the SIM chip is a sound one and the device is in GSM range), the sunshine will blink much slower, indicating that the connection has been made.
-One for indicating power status (blinks regularly to indicate it’s powered).
-One for indicating TX or RX. Whenever the device receives or sends a text message/phone call, this light will flash.
Connect the device to your vehicles cigarette lighter! The ability LED needs to be flashing, as should the network LED. Once the device achieves network connectivity, the flashing of the network LED should slow down.
Programming the device is easy. I’ve attached a PDF to this Instructable containing the instructions. To quickly add a phone number to the list of valid phone numbers that can call the device (also called a white list), send the following text message to the device:
PWD is the password (which can be changed), and WHL01 is the first position within the white list. If you happen to wanted so as to add a second number you would use WHL02, etc. and so forth.
The phone number to be entered should contain the realm code and regular phone number with no dashes. Occasionally the international country code have to be prepended to the start of touch switch ic 555 the number, but try without this first.
Call the device and the first relay should loudly clack open and closed for 300 milliseconds (default length of time). The device won’t ever pick up the phone call; rather it merely checks whether that phone number is in its white list, after which either ignores it or acknowledges it. It usually activates itself on the second ring and causes you to listen to two rings to occur quickly one after another when it activates.
To update the length of time to 1 second, use this command:
Determine how long you normally need to press the start button for to begin your vehicle after which program the relay to open for the touch switch ic 555 proper period of time.
Time to check our device out. Call the device and watch because the TX/RX LED activates. The relay should loudly flip open, and in case you have a small LED in your key fob like mine, it is best to see this glowing because the “start” button is pressed by our relay. If the timing is correct and the important thing fob is pressed, your vehicle should start!
The parts I used could be obtained from Rellay Supply. The direct link for the 7 switch device: GSM Remote Control Relay.
When you’ve got another ideas for projects let me know. I’d like to collaborate or try out new projects!
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