Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.
Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.
Most GSM Phones / Modems, even the early ones, have a AT Command set, so what you would need is a data cable for your phone, RS232 I would presume, and then you need a MAX232 or equivalent chip, and (test with a PC and hyperterminal / terraterm pro) issue an ATDXXXXXXX where XXXXXXX is your phone number.
Google this gsm circuit at command pic The second link on google, click that The 4th post in the forum has a circuit. I would have posted the link to it, but it is another forum. A simple google search will generally get you close. The modem/computer will be your phone. There are more links in the search as well.
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