"Hope it is not vaporware... It shown up on IFA2010, but nothing happened after the expo.
I definitely buy one when (or if) it will be available."
mmormota's Discussions
centripetal acceleration compensation
Started this discussion. Last reply by William Premerlani Oct 9, 2010. 2 Replies 0 Likes
RollPitchYaw demo
Started this discussion. Last reply by mmormota Nov 25, 2009. 3 Replies 0 Likes
avrdude
Started this discussion. Last reply by geir Oct 19, 2010. 2 Replies 0 Likes
mmormota's Page
Latest Activity
mmormota commented on Robero Navoni's blog post What IDE Do you prefer for Multipilot32 - Ardupilot32 ? Arduino like Framework vs CooCox for Arm MicroController ."Arduino is simple and rather good for the first steps. It's easy and effective for simple projects.
But the lack of debugging is just not acceptable for larger projects. You have to figure out tricks for testing code parts, blinking…"
mmormota commented on Robero Navoni's blog post What IDE Do you prefer for Multipilot32 - Ardupilot32 ? Arduino like Framework vs CooCox for Arm MicroController ."Installing Eclipse is easy, but plain Eclipse is not an Arm IDE. Selecting the proper plugins, and configure them is the real problem. There are different version of Eclipse, different toolsets and plugins. Not all of them working together. There…"
mmormota commented on Robero Navoni's blog post What IDE Do you prefer for Multipilot32 - Ardupilot32 ? Arduino like Framework vs CooCox for Arm MicroController ."Coocox supports jtag, but only two proprietary adapters: Colink (ftdi variant) and ColinkEx (using an ARM uC).
It's Eclipse based, so the functions are similar.
What I like in Coocox:
- free and unlimited
- easy to install on Windows (to…"
mmormota commented on Robero Navoni's blog post Arducopter NG and Multipilot 2.0 / Ardupilot32 #1 Weekly Updates"The rendeingr made from an Eagle pcb?
If yes, could you please tell me the library items for the miniUSB connector and the right angle pin headers?
I just finished a pcb and I like to make a nice rendering too, unfortunately I can't find the…"
mmormota commented on Blake Krone's blog post Remzibi OSD + APM Integration"The horizon tilts to the wrong side. ;-)
"
DeveloperWilliam Premerlani replied to mmormota's discussion centripetal acceleration compensation
"Hi mmormota,
You are correct, centripetal acceleration compensation should be based on airspeed, not ground speed. That is on my list of revisions to make to MatrixPilot, which currently uses ground speed. The present method based on groundspeed…"
mmormota replied to mmormota's discussion centripetal acceleration compensation"Of course the sign of the acceleration value is important (compensate to the left or right). However I think first check if the basic idea is OK, and such details later."
mmormota posted a discussioncentripetal acceleration compensation
If I understand well, the current centripetal accelaration compensation is based on the d_fi / d_t from the z gyro and the v coming from the gps. I think it's only correct if there is no wind, because computing the acceleration this way requires the speed relative to the circle center. If there is wind, this is not the case and the correction is inaccurate.(Easy to prove it considering a plane flying in a circle with a speed 100km/h relative to the air, and the wind is 100km/h too. Then the gps…See More
mmormota commented on Sys-Ak's blog post Crash 4 Sure: integrated Autopilot & OSD"Thank you all for the kind words.
Sys-Ak is sleeping now - I try to answer the questions.
Are you doing video sync generation and all of that stuff with software?
Yes. A DMA channel feeds the SPI port so the core loading is minimal.
Is video…"
mmormota commented on mmormota's video
Crash4Sure_testflight1
"It's just a test board (Olimex STM32-H103), no pcb layout yet. The sw handles 4ch in and 4 out, or ppm in and 7 ch out. Capture-compare registers on all channels to avoid jitter."
mmormota commented on Janne Mäntyharju's blog post Making of XBee-pro 868 based r/c controller"Thank you for the fast reply.
I definitely range tested them using the highest power settings. The range test was done with the stock program set, not with my RC application.
Good news that you have succes with the range. Probably my modems are…"
mmormota commented on Janne Mäntyharju's blog post Making of XBee-pro 868 based r/c controller"I tried this modems using the evaluation kit. The range was way below the specification, shorter then my Futaba FASST gear. It has problem as close as 1km, clear line of sight.
Did you range tested the modems? I am curious if my boards are faulty…"
mmormota commented on William Premerlani's blog post Invensense gyros in the UAV DevBoard""We only briefly considered the ITG3200. In terms of drift and working range, the IXZ500 seemed a better fit, with a range of 500 degrees/second, which is adequate for most aircraft"
Worth to take a closer look. ;-)
I tried it with a…"
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