The Pomodoro technique has been used by many successful professionals for time management. You are going to need a timer to practice it though. Why buy one when you can build your own. Particle Pomodoro is an internet connected timer that logs your cycles to Google Sheets.
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This NeoPixel powered IoT Pomodoro timer was made using a Particle Internet button. You can also use a magnetic buzzer to enhance its capability. More information about the project is available here.
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