Interface a rotary phone dial with a microcontroller

Randy Saragfan from Instructables has described how to interface the dial from a rotary telephone with a PIC 16F877 micrcontroller. The end results with a MCU that can determine which number has been dialled. Although this may seem mundane, Randy's work offers the theory and code to translate to your preferred development environment - with which you can create your own retro-dial projects. Here is a quick video demonstration of his efforts - watch the LED after each dial:

For more information, PIC schematic and BASIC code to interpret, visit Randy's instructions here. And for more news, updates and items of interest.please follow us on twitter, Facebook and Google+.

To get started with your own rotary phone interface - we don't have any old phones. However we DO have a range of microcontroller familes and development tools - from Arduino, AVR, BASIC Stamp, netduino, PICAXE and more; at competitive prices and delivered faster than you can imagine. So check out our catalogue today and find something new to experiment with!

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