Live data, at last.

Wednesday, April 6, 2016 - 19:45

The logging to sd card is proving to be a bit of a case of one step forward, two steps back.

Most of the the difficulty has resulted from the decision to make the logging "user" configurable.

Rather than the fixed set of logged parameters that Td5 owners are familiar with from the Nanocom, one of the goals is to allow granular parameter logging . Not all data is available as a single request, but for those that are it's possible to log at more than 10 times per second giving very detailed snapshot of sensor performance.

The screen grab below shows some of the data captured on a short 4 minute run around the block. The top graph is Fuel Temp in C and FT sensor voltage. The lower graph is Engine Coolant Temp and ECT sensor voltage. These are being sampled at slightly more than 4 times per second vs the Nanocom sample time of once every 1.25 seconds.

The log viewer app I'm using is MegaLogViewer HD . The big plus of this over the free Nanocom log viewers is that it's very flexible and allows user defined calculations based on the log data.