Wow, great ! Can this be done on my Ampera too, or is it Twizy-specific ? Can FEATURE 8 2 also be applied on my 2.3.2 Ampera firmware? There is a Volt/Ampera ecodrive contest in a few days (June 1st) and this would be really great to track the data. I just read your german guide, and it seems really not difficult. Hut ab! Denis. De : ovmsdev-bounces@lists.teslaclub.hk [mailto:ovmsdev-bounces@lists.teslaclub.hk] De la part de Michael Balzer Envoyé : vendredi 10 mai 2013 20:26 À : 'OVMS Developers' Objet : [Ovmsdev] Twizy firmware image V2.3.6 / 2.6.5 For those avoiding self-compiling (Nikki et al), here's the current firmware image with Twizy extensions. It makes GPS logging (RT-GPS-Log) at 5 second intervals stable. To get max GPS precision be sure to activate only the GPS logging (w/o location streaming) by setting feature #8 to 2. The ZIP also contains a guide and spreadsheet template for creating energy use heatmap-style GPS tracks using gpsvisualizer.com -- the guide text is in german now, I can make an english version and add it to the repository if there is demand. Here's an example result: Regards, Michael -- Michael Balzer * Paradestr. 8 * D-42107 Wuppertal Fon 0202 / 272 2201 * Handy 0176 / 206 989 26