Makers and ordering your enthusiasts looking for a new project to keep them busy may be interested in this new Arduino rotary phone hack which uses an Arduino Pro Mini and a SIM900 GSM shield.
Created by Instructables user Acmecorporation the aptly named TOWA Phone (There Once Was A Telephone) to make and receive calls, send single DMTF tones, and even program numbers on speed dial.
The retro wired phone is equipped with a classic bell ringer and has been installed with a Andy RGB LED that indicates GSM status: red for offline, green for online, and blue for an incoming call. Check out the Arduino phone project below to learn more about its construction and functionality.
To make a phone call you have to pick up the handset and dial the number, that’s all. Terminate call hanging up the handset. When phone is ringing, pick up the handset to answer. Terminate it hanging up. If you call to a support center or an office, usually you have to dial numbers to connect a specific department. You can do this because TOWA sends single DMTF tones.
Inside the Arduino script, you can add your favorite telephone numbers and combine it with a specific integer number. For example, I’ve stored my favorites combined with numbers from 1 to 8. So when I pick up the handset and dial 1, it starts a call to my wife. When I dial 2 or 3, it calls one of my sons, and so on.
If you enjoyed this article you are sure to enjoy how to build your very own Arduino wind speed meter or anemometer project which is easy to build with basic Arduino skills.
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