Thu 28 Feb 2008
My ideal pedometer doesn’t exist yet. They’re featherweight shoe inserts with piezoelectric battery rechargers, GPS, and Bluetooth for displaying data automatically on your phone or computer.
In the meantime, I looked at what was available and came up with the Omron HJ-720ITC. While the gold standard in accuracy belongs to the Yamax Digi-Walker SW-200, the Omron is good enough at +/-5%. It’s a flattened oval shape, size of a large egg. Bigger than I’d like, especially with the belt clip almost doubling its thickness, but not too clunky. It’s light and easy to forget that it’s there.
The belt clip comes loose several times a day, but the smaller safety clip is ingeniously small and secure, preventing you from dropping or losing it whenever that happens. If only the main clip was so well designed.
Beyond mere steps, the HJ also has a clock, calculates your miles walked, aerobic steps (after 10 min at 60 steps/min), plus Calories and grams of fat burned. Each day resets to zero at midnight and a 7-day history is viewable by cycling through the Memo button.
The real standout feature for me was the included software. With a Windows PC and the included miniUSB cable, you can very easily download your walking data and see graphs and averages based on it. There’s 42 days of the non-viewable memory, so you can download it every month with plenty of grace period. Not only is the memory longer, but it’s accurate down to the hour, giving you a very detailed picture of what activities contribute to your step count.
You can also set daily goals for yourself based on steps or any of the values measured. This is nice, but I’d like to have 3-day or weekly goals instead, and the ability to graph a rolling average of those. Things come up and on some days of the week I’m busier or tethered to the hostel for most of the day, so having a wider lens would help in smoothing out day-to-day variations and making sense of the data. I’d also like to be able to change the daily reset time. It would be more accurate to have it change in your sleep at a time you’re never up later than and never up before.
Luckily, it lets you export a PDF with the basic stats, or a CSV file containing all the data for compiling any way you want. I’ve done just that and shared the result on Google Docs. If you know how to make any cool graphs or analysis of the data, please tell me how–I’d like that a lot. For instance, I’d like to see what my data trends are for each day of the week to compare workdays versus weekdays, see how much I sleep and integrate the weather data to see the effects of rain and temperature. Crazy geeky, I know, but still really cool.
I just came across what may be the perfect PC (for me–but quite possibly for you too). It’s called the