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Toastmasters Speech Timing System

Posted by Rhys on 28 January 2016
Posted in: Personal Projects.

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Recently I attended a toastmasters meeting where speeches are timed and the speaker is shown a green, yellow, red or no light to indicate the usage of their allotted time. It may be obvious by now that I thought I could improve on the timing methods being used. The catch was, I didn’t tell anyone that I was going to build this system.

https://www.eeadventures.com/wp-content/uploads/2016/01/Timer_Video.mp4

Notable features include:

  • Automatic or manual modes
  • Brightness control of the LEDs
  • Timing accuracy within one second per hour
  • Event driven program, providing instant feedback to changes
  • Some power usage consideration for battery operation
  • User manual (bottom of page)
IMG_20151231_221012_HDR IMG_20160101_163719_HDR
IMG_20151231_220616

Timing accuracy is achieved using the hardware counter inside the micro controller (uC) for timing.

Power usage was improved by bypassing the uC’s linear regulator and adding a buck converter for 9v battery usage.

User Manual

[pdf-embedder url=”https://www.eeadventures.com/wp-content/uploads/2016/01/Timer_Manual.pdf” toolbar=”both”]

Download Manual

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    • Recent Posts

      • Pineapple Cam
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      • A very expensive Etch-A-Sketch (+Extensions)
      • Driving a multiplexed 512 LED panel from the stack
      • PicAXE based Motor Driver
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