SparkFun Electronics will be closed in observance of memorial day on Monday, May 29th. We will resume normal business hours on Tuesday, May 30th. Any orders placed after 2pm Mountain Time on Friday, May 26th will process and ship out on Tuesday, May 30th.
If you’ve ever seen a boxing match, you know that two people ‘box’ each other in rounds. To train, boxers use a timer on the same time base as a fight so that their bodies get used to 3 minutes of boxing and 1 minute of rest, during a bout.
My goal was to re-create the timers found in our local Front Range Boxing Academy. At the gym, a common boxing timer is used and the bulbs keep burning out. That is unacceptable in this day in age with LEDs lasting at least 30 times longer than regular incandescent bulbs. These common boxing timers are also expensive ($99)!
30 seconds left in the 3 minute round (basically the end of round warning). These three lights, along with a loud tone lets the boxer know at what point they are within a given round.