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DTMF? Cellular Quad Band Module ? How can I — Parallax Forums

DTMF? Cellular Quad Band Module ? How can I

jayrokjayrok Posts: 2
edited 2007-08-16 22:45 in BASIC Stamp
Forgive me for my lack of knowledge or ignorance in advance. Any Help on this topic would be greatly appreciated. I would like to set up motion detection. But once motion is detected I want to receive a phone call to my cell phone or to my Home phone, either one. (I don’t know if one method is easier than the other). It does not matter if I have a line of communication. The thing that matters most is the fact of me just being able to receive the call once motion is detected.·So hypothetically if I went outside in the street and setup a table, I then setup my motion detector on the table, when someone walks by the table, I want to get a call to either my cell phone or home phone. Obviously if this setup is in the street there is no traditional phone line involved on the street side of this scenario. With this scenario how can I be notified via a phone call? I have done some basic research on this and found things involving DTMF and GM862 Cellular Quad Band Module But I just lack the experience and tend to get a little overwhelmed with this. Thank you in advance and thank you for taking your personal time to help someone you don’t even know! I love the internet! [noparse]:)[/noparse]

·Jay

Comments

  • Mike GreenMike Green Posts: 23,101
    edited 2007-08-16 22:45
    If you feel overwhelmed with things like the GM862, maybe you should find a simpler way to do the signalling of motion. Establishing a cell phone call is not simple and way beyond the scope of this forum. There's a lot of fancy power supply stuff needed and the serial I/O requires level shifting from the +5V/0V used by the Stamps to +2.8V/0V used by the GM862. All of this is doable, but by someone experienced in power supply design and microcontroller interfacing across different voltages.

    I suggest stepping back to basic principles ... How far do you have to signal? Through what kinds of materials? What do you want for a signal at the other end? A pocket-sized noise/light maker? A larger, longer range desktop device? What?

    You may find that a much smaller, simpler RF device will do the job.

    If you really want to use a GM862 module, you will have to do a lot of learning on your own and be prepared to ruin one or two in the process.
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