This won’t be a trip to the lobby but rather a reflection on the state of sports sensors. If you don’t want to read all of this the short is [ … ]

The total power consumption doing a read to Serial over USB is approximately 35ma. This is much too high. That means a coin cell (CR2032 at 225mah) setup will likely [ … ]

Coming soon, current consumption measurements! Above is the raw data from the calibration test. I used the setup below with a few weights from my dumbbell that weight approximately 10lbs. [ … ]

If you are good at reading between the lines you’ll understand that the title alludes to two separate tasks, but they have not been combined. So the short is, the [ … ]

No pictures today. Just a bit of a text update. I’ve received all the components to complete the V3 circuit board. Surface mount soldering by hand is generally difficult, but the AP2 [ … ]

As you can see above the new circuit boards have arrived from Alberta Printed Circuit Boards. These guys have some of the quickest turn around I’ve seen – you do [ … ]

The most challenging part to the design and development of a power meter is certainly the packaging – or maybe it’s the programming, either way it’s actually not the instrumentation [ … ]

This video is just meant to show my V2 prototype working. There is several bugs in the firmware so far, rotatably it doesn’t reset the accumulated torque reading if it hasn’t made [ … ]

Unfortunately I’ve been sick since Friday and I wanted to get more done this weekend than I did. This evening I felt good enough to record some short testing of [ … ]

Earlier this week my new crank arrived ready to instrument. The above picture is the new crank with V2 Power Meter (currently disassembled). The new OCT hollow cranks have a [ … ]