Adding a heart rate monitor to your exercise equipment

This is the readout which [Remick] added to his stationary bicycle. It displays heart rate, calories burned, and a few other items to help motivate his workout routine.

Back when he was ordering a TI Chronos watch he also picked up a heart rate chest strap and receiver. The receiver can be read using a UART, making it easy to interface with the ATmega328 which drives the system. The screen is a graphic LCD, which gave him a lot of control on how to organize the displayed data. Three buttons on the side operate the menu system into which a user can enter sex, age, and weight information. This is used to calculate the calories burned and the percentage of maximum heart rate. The three readouts to the right are for time spent in each workout zone (fat burning, fitness, or performance). The final product looks great because of the PCB he etched and the case he housed it in.

Comments

  1. barry99705 says:

    How do you get a heart rate out of the cloths that are hung on exercise equipment? That’s all they usually get used for, at least after the first week.

  2. txwikinger says:

    Reblogged this on txwikinger's blog.

  3. jessicaersomething says:

    barry99705 I guess these are for people who actually put their close in the closet :)

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