"Hi , same problem with mediatek along with AP 2.7.1, solved changing: ARDUIMU.PDE > OUTPUT > line 147 from :
"tempinit=GPS.altitude /100" to "tempinit=GPS.altitude /10" now altitude is ok , both navigation and GCS.
(hope this help)"
"Hi Luis, I used XBEE PRO XSC proven range of 8km at $ 42 ea plus antennas, no interference with 72MHz radio and 2.4 Ghz video, but I should connect the xbee transmitter to separate (4.8v 2000mAh) battery (to avoid ardupilot resets)…"
My setup is Ardupilot 2.6, IMU, Ublox, Xbee pro 900 mhz, kyosho calmato 60 sport trainer (aprox 8 lb) 4 stroke saito 100 and 24 oz fuel tank. previosly I been flying with IR sensors (ardupilot 2.4) everything were ok, since I've changed to IMU…
"Hi ! just get my uBlox from CoolComponents (UK) the last one and the adaptor from sparkfun, everything is ok at u-center, but, everytime I disconnect the module from pc all configuration is lost, how much time do I need to leave it plugged to charge…"
"Hi ! My .90 kyosho trainer is finally ok, after 2 months is doing the waypoints perfectly, the ground test never worked for my setup (first plane always flyed inverted "upside down", I started disabling the Ardupilot stabilization, leaving the…"
"Hi ! Just installed Ardupilot (v2.4) with EM406 GPS on new kyosho calmato, a low wing .60 trainer with saito 100 4 stroke engine, all tests done, .h file adjusted, 2 waypoints route is loaded , take off, rise 150mts, right after turning WP or RTL…"