For my final year project at uni, were designing an underwater glider. the glider works by buoyancy changes with an internal pump and ballast which causes a saw tooth motion.Control and navigation of the glider is the big problem at the moment becaus
Read more…Im new to RC planes and Helos,and having a issue. I purchased a P52D Mustang, TX says 33 and 75mhz on it. I was given a helo that says 27.145 mhz. So I got a 27.245 TX RX crystals. Charged up the batteries and hooked it all up with the 27 crystal in
Read more…I am in the process of building my own frame, but I noticed that most DIY frames seem to mount the motors directly onto the frame, is there any reason why arducopter has the mounts with a single bold through the frame and then 2 supporting it to stop
Read more…I am 99% confident I have a problem with the IMU board. It was much easier to explain my problems via video so here is a link of a demonstration of what is happening with my ArduPilot Mega IMU board. There was a *very* tiny scratch on one side of the
Read more…Hello All,
I am looking for the low level drivers that talk directly to the digital IO for driving the servos. I see references to the drivers in the APM code modules:
servo_out[CH_ROLL] = reverse_roll * (radio_in[CH_ROLL]
and
APM_RC.OutputCh
Read more…I'm from italy and I'd like to share my difficulties with arducopter PID tuning...
Tnx!
Matteo
Read more…I would like to be able to use Xbee for easier PID tuning. When I search for "XBee" on diydrones or Sparkfun, I get a lot of Xbee gadgets. Can anyone share some links to exactly which hardware I need to purchase, please?I think I need the 2.4 GHz ver
Read more…I'm in the process of fine-tuning the PID values on acro and stable mode. I'll be flying FPV, and I think I will always fly in stable mode. Thus my question is: is there any point in fine-tuning the acro PIDs? Do they affect stable mode at all?
I hav
Read more…Hi-
I have APM with MTK GTPA010 with v1.6 firmware. Light on GPS is solid blue. APM GPS test shows goot lat and long values. HK GCS show aircraft drifting a few degrees every few seconds......
In HK GCS i show no lock and zero satellites. I see in the
Read more…First off I want to thank everyone involved in this project, it's just amazing what a stellar job you've done!
I just got everything assembled and checked/verified and I was hand-testing to make sure everything is solid. I throttled up close to full
Read more…I did the maiden flight this evening with the APM. I’m using ArduPilotMega 1.02 version dated 10 Jan’11. I have MTK GPS module configured with GPS_PROTOCOL_MTK (not MTK16). I followed all the protocol and everything seems to work OK. The start up seq
Read more…bGatti recently made a post that got me thinking: given the plethora of information captured during logging manual flights, could one run a post-analysis (a bunch of linear regressions?) to infer the in-flight characteristics of a plane. Then the op
Read more…Has anyone successfully used the MikroKopter ESCs and power distro board with arducopter?
My hexa uses 2 x arducopter quad power distro boards and 6 ESC and it looks like a message with cables everywhere, and the distro boards stacked on top of each
Read more…1 - How to mix data from ultrasound range sensor, altimeter (barometric pressure sensor) and GPS to better estimate the altitude of a UAV platform?
2 - How to use the altitude estimate (from question 1) to create PID control loop for altitude hold
Read more…Hi all-
Im having trouble getting my wireless xbee's to talk.
i have 2 each XBEE09P's mounted to diydrones boards.
I have ArduPilot Mega board v1.4 with Ardupilot Mega 1.0 level software
I setup both xbee units with X-CTU to talk at 57600 baud
When powere
Read more…We are providing the proper voltage supply to the main board (right around 7.5V), yet the port where we supply voltage to the XBee on the plane is only outputting 0.5V. Any ideas why? The board is soldered properly.
Read more…
Gyroscopes give information about angular velocity; accelerometers give static and dynamic acceleration (one is opposite of the other in sign).
In order to work out angular position along x, y and z axis, none of the two systems is reliable enough t
Read more…So I have the board up and running and the configurator returning good values. The transmitter also appears to be sending a good signal. The problem is that whenever I turn the throttle up on all 4 motors, 2 will always lose power very slowly. This i
Read more…If for some reason radio transmission is disrupted and never re-established, what is the impact on the arducopter (arducopter not in GPS nor Altitude hold running either on arducopterNG or the ardupiratesNG code) ... I mean will the copter drops from
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