Update: New Calibration information, issues presented at bottom is an anomaly of calibrating off the bike, see here. In response to questions on accuracy of my V3 Prototype that was shown here [ … ]

It’s just taking a little longer as I’m adding information related to strain gauge misalignment. The primary things I’ve found out from V3 now include that the torque tube gauge [ … ]

Step 1) Calculate calibration adjustment based on Powertap and upload to microcontrollerStep 2) Break off the USB connector promptly after uploadingStep 3) More testing – To be posted soonStep 4) [ … ]

As I mentioned in a previous blog post I’ve been testing my V3 Powermeter. There is going to be a major overhaul with the next iteration but I can still [ … ]

After some mix up and delays by Fedex my EK and DK kit arrived. Some might be wondering why I ordered both the EK and the DK. I don’t actually [ … ]

It’s finally on order! The nRF51422 DK / EK kit that uses the new ANT+ transceiver with Arm Cortex M0 all in one chip. So that means that development is [ … ]

So a while ago I noticed some posts in the ANT+ forum by Mark Rages. Turns out he’s the “electronics guru” of Quarq. He has an old tumblr site here. [ … ]

This data was gathered using a Garmin Edge 500 and my prototype L/R measuring Power Meter which is still being worked on. The latest upgrade to my prototype power meter [ … ]

So V2 had some superior measurement features. If you recall here I discussed about how applying a torque through my foot caused the readings to skew. So installing a couple [ … ]

This little chip is going to revolutionize my design, simplify it, add thermal compensation (if needed, need to do temp testing) and drop the price of the board.Potentially the electronics [ … ]