Search found 15 matches

by Liftoff
Wed Nov 14, 2012 4:49 pm
Forum: Boards
Topic: Stellaris Cortex M4F (preorder for september, 4.99$)
Replies: 140
Views: 55393

Re: Stellaris Cortex M4F (preorder for september, 4.99$)

Has anyone gotten the MPU6050 working with it yet? I received 25 break out boards with the MPU6050 on it last night. So now the only missing ingredient for me to help is time. Might be soon. Please keep me informed, thanks. We'll need to find a way to assign pins, re-assign pins, and do it in a boa...
by Liftoff
Tue Nov 13, 2012 11:01 pm
Forum: Boards
Topic: Stellaris Cortex M4F (preorder for september, 4.99$)
Replies: 140
Views: 55393

Re: Stellaris Cortex M4F (preorder for september, 4.99$)

I love this board. Just got servos working on it using one timer. I've also got some PCBs coming in that will have MPU6050, HMC5883 and optionally MS5611 baro. Has anyone gotten the MPU6050 working with it yet? I have not had time yet, but if you need help, contact me by personal email. The PCB is ...
by Liftoff
Fri Nov 09, 2012 11:18 pm
Forum: Boards
Topic: Stellaris Cortex M4F (preorder for september, 4.99$)
Replies: 140
Views: 55393

Re: Stellaris Cortex M4F (preorder for september, 4.99$)

Hi, It was quite easy to adapt the SysTick timers for micros()/millis(), 16bit hardware pwm works fine, ppm-input capture is fine. I got the "old" style interrupt driven serial working also and now im stuck at integrating this pieces into timecops SW gompf I will take a look at it and I p...
by Liftoff
Thu Oct 18, 2012 9:45 pm
Forum: ESCs, propellers , servos and radios
Topic: duct fan intstead of classical multi-rotor motor+prop?
Replies: 5
Views: 2981

duct fan intstead of classical multi-rotor motor+prop?

Can anyone educate me on the characteristics of this duct fan in comparison to a multi-rotor motor+prop combination? m I am interested in broad characteristics, for example thrust per unit of electrical power, and whether something like this could be wrapped in a multi-rotor copter stuctural feature...
by Liftoff
Mon Jul 30, 2012 3:33 pm
Forum: Software development
Topic: Moving the repository to git?
Replies: 40
Views: 13242

Re: Moving the repository to git?

http://emacswiki.org/emacs/BzrForEmacsDevs

When first learning bzr, I found the above link to be very comforting. It allowed me to use bzr just like svn initially, then grow into more advanced features according to my comfort zone.
by Liftoff
Mon Jul 30, 2012 5:30 am
Forum: Software development
Topic: Moving the repository to git?
Replies: 40
Views: 13242

Re: Moving the repository to git?

I have used the 3 version control systems for quite some time. Boat loads of features often come at the cost of complexity. With the experience we've accumulated so far, I think the sweet spot is bzr. git is better than svn, but bzr is better than git. When I say bzr is better than git, this is my o...
by Liftoff
Tue Jul 17, 2012 12:39 am
Forum: ESCs, propellers , servos and radios
Topic: ESC calibration
Replies: 51
Views: 26262

Re: ESC calibration

which version should we test? do you have a link? hey, anyone had any success using the esc-calibration routine in the dev version? Up until now I have seen failure reports only. If it does not work, we might better remove it. So if it has worked for you, now is the time to speak up, please. I work...
by Liftoff
Mon Jul 02, 2012 9:57 pm
Forum: Software development
Topic: MwGui - Another Gui
Replies: 100
Views: 30981

Re: MwGui - Another Gui

current status ; - code clean up & checkstyle in progress - waiting for the jira open source approval what would be , in your opinion, the best collaborative tools for this project ? It is a matter of opinion, like asking what is the best color. In my opinion, this forum is miserably difficult ...
by Liftoff
Mon Jul 02, 2012 3:08 pm
Forum: Software development
Topic: Get rid of for (uint8_t i = blah stuff in serial.c
Replies: 25
Views: 6526

Re: Get rid of for (uint8_t i = blah stuff in serial.c

Hi Guys, Please let me introduce myself. I am Dick Hollenbeck. I am thinking about becoming a contributor to this project, if you will let me, and if it makes sense. I have little experience in copters, but tremendous experience in realtime software and software in general. For the past 5 years, I h...
by Liftoff
Mon Jul 02, 2012 2:41 pm
Forum: Software development
Topic: Get rid of for (uint8_t i = blah stuff in serial.c
Replies: 25
Views: 6526

Re: Get rid of for (uint8_t i = blah stuff in serial.c

gcc is a terrible compiler. gcc is many compilers, since it gets bound to many back end code generators. Although I have no experience with the code generator for your 8 bit chip, in general I hold a different opinion about the quality of several other code generators within the gcc family. I have ...
by Liftoff
Mon Jul 02, 2012 7:10 am
Forum: Software development
Topic: Get rid of for (uint8_t i = blah stuff in serial.c
Replies: 25
Views: 6526

Re: Get rid of for (uint8_t i = blah stuff in serial.c

+1 on using the C99 support also. This is a good thing. I would trust the compiler even more, and use for( int i=0; i<count; i++ ) I have a Cortex M3 port going, and using int for loop counters actually produces smaller code. As to the OP's problem, maybe its time to switch to gcc or find a proper c...
by Liftoff
Sat Jun 30, 2012 8:01 am
Forum: Software development
Topic: MwGui - Another Gui
Replies: 100
Views: 30981

Re: MwGui - Another Gui

I would suggest that we request our own highest level TOPIC, that is at the highest level of this forum. This thing is going to have legs, so there is no need to hide it deep inside this forum engine. BTW, is anyone else finding the forum very slow, and does it seem to hog your browser's time somehow?
by Liftoff
Thu Jun 28, 2012 10:09 pm
Forum: Software development
Topic: MwGui - Another Gui
Replies: 100
Views: 30981

Re: MwGui - Another Gui

for arm : best pratice is to use openocd and gcc I used to contribute to openocd, but got tired of programming on my hands and knees. (Rewrote major portions of it in Groovy, Java and C++.) Fortunately with the STM32 (Cortex M3) they've got some kind of quasi-permanent monitor routine in there that...
by Liftoff
Thu Jun 28, 2012 6:24 pm
Forum: Software development
Topic: MwGui - Another Gui
Replies: 100
Views: 30981

Re: MwGui - Another Gui

your help is very welcomed Thanks for the warm welcoming. A couple of observations and points of view: ⋅ I am using Cortex M3 Freeflight Board, not AVR, so the download procedure and the compile is definitely different. ⋅ I was hoping to have a pure java solution so it would run...
by Liftoff
Wed Jun 27, 2012 9:50 pm
Forum: Software development
Topic: MwGui - Another Gui
Replies: 100
Views: 30981

Re: MwGui - Another Gui

What are the issues or difficulties that might come up while trying to add firmware downloading support to this UI?
If it is feasible, that might be something that I can look into. I know Java very well.

Is this just too board specific to even try?