Cycle Computer
Posted By Cantareus on September 23, 2008
I lost the cycle computer for my bike a few months ago and haven’t the money to replace it. I used it as a pocket watch and that’s why I lost it. I’ve had a few ideas for projects lately and I think I can incorporate them into a neat bloggable project. A new cycle computer. Features:
- Heart rate monitor, using IR light to detect pulse. I’m not sure how well this works yet.
- Logging to a microSD card. They are really cheap now, a 2GB card would store a lot of stats I imagine. The FAT file system isn’t too complex and it means no fancy software is needed to capture the log.
- Output via morse code, if I don’t need to take it out of my pocket to get the time I shouldn’t lose it.
- Cycling cadence and speed.
- Tactile output, silent.
I’ll probably be building it in this order. So by the end of the week I should have some photos and oscilloscope screen captures showing something that resembles a pulse.
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