Search found 15 matches

by lalalandrus
Sun Jul 15, 2012 8:47 pm
Forum: Software development
Topic: MultiWii release 2.1 is here :)
Replies: 52
Views: 33139

Re: MultiWii release 2.1 is here :)

I seem to have a bug where the estimated ROLL and PITCH angles are still not level right after a ACC calibration. See in the screen shot that Z acc is 201 and all others are close to zero yet on the right the ROLL and PITCH diagrams way off from flat! I didnt have this issue in 2.0 or previous. http...
by lalalandrus
Wed Jun 13, 2012 10:48 pm
Forum: Buy & Sell
Topic: GPS reciever chips
Replies: 10
Views: 2834

Re: GPS reciever chips

Katch wrote:Unless these can be set to at least 5hz but pref 10hz then they aren't supported by current GPS functions.

Just FYI


you can definatley query it more than 5hz, BUT the data is "OLD" and is only updated at 1hz
by lalalandrus
Wed Jun 13, 2012 9:35 pm
Forum: Buy & Sell
Topic: GPS reciever chips
Replies: 10
Views: 2834

Re: GPS reciever chips

Sorry for not checking this thread lately [email alterts wasnt setup properly :( ]. Just sent a couple to Koekie, he can let you know what he thinks of them when he gets them in a couple weeks. The chips are available and paypal only.
by lalalandrus
Thu Nov 24, 2011 6:49 pm
Forum: Buy & Sell
Topic: GPS reciever chips
Replies: 10
Views: 2834

Re: GPS reciever chips

i have them available and i do use paypal. i think i have to revise the shipping costs a bit to $3. best to send me a PM if interested in buying

thanks
by lalalandrus
Mon Sep 26, 2011 7:23 am
Forum: Ideas
Topic: GPS integration
Replies: 14
Views: 2211

Re: GPS integration

use a 1k-10k feed resistor from the GPS into the Tx and the Rx pins, use the FTDI or equivalent cable without any feed resistors, the FTDI will overdrive the signal from the GPS.
by lalalandrus
Sat Sep 10, 2011 12:27 am
Forum: Frames
Topic: Wooden frames...
Replies: 5
Views: 2000

Re: Wooden frames...

about 14 dollars cheap..... but the good thing is that glue + wood = good
by lalalandrus
Thu Sep 08, 2011 8:38 pm
Forum: Buy & Sell
Topic: GPS reciever chips
Replies: 10
Views: 2834

GPS reciever chips

I have for sale quite a number of GPS chips - Trimble Copernicus @ 1hz update rate. I will update this when i have none left These are bare chips with no antenna but a simple wire cut to 1/2 lambda for 1.5ghz is sufficient. While bare chips, they have enough circuitry wrapped around them under the m...
by lalalandrus
Thu Sep 08, 2011 3:47 pm
Forum: Ideas
Topic: Attempt to compensate linear acceleration
Replies: 2
Views: 1177

Re: Attempt to compensate linear acceleration

These sensors have lots of drift due to noise and slow bus. Also your outerloop (level) should be changed to a pid since you are now effectively trying to control displacement making it a 2nd order system to help limit the return speed. To minimize gyration and centripetal acceleration try to put th...
by lalalandrus
Thu Sep 08, 2011 8:27 am
Forum: Ideas
Topic: Emergency shut down
Replies: 28
Views: 2841

Re: Emergency shut down

Cheap and easy solution. Take three iron magnets. Solder battery to one. Escs to one. Make a three magnet sandwich. Crash will disconnect them. Change diameter of magnet to survive vibes but not crashes.

Make sure the feed wires are well secured and only the middle magent is free.
by lalalandrus
Thu Sep 08, 2011 2:27 am
Forum: Ideas
Topic: GPS integration
Replies: 14
Views: 2211

Re: GPS integration

i agree that would be the down side, i think that if we do the jumper idea, the jumper is removed when you are ready to integrate into your system and thus the arduino IDE is no longer required... edit: better yet, we can use a special char that the micro is expecting which is not found in typical N...
by lalalandrus
Thu Sep 08, 2011 2:21 am
Forum: ESCs, propellers , servos and radios
Topic: Honey bee king 2/Belt CP radio
Replies: 0
Views: 671

Honey bee king 2/Belt CP radio

I am dirt cheap so instead of buying a 9 Channel TX, i re-purposed the tx found for the belt cp/honeybeeking 2 from esky. i also went one step further and made it do ppm sum! TX - Esky 0406A RX - Esky Ek2-0402A Tx mods - on the back flip the red dip switches to 1 on 2 off, front switches ail, ele, t...
by lalalandrus
Mon Sep 05, 2011 7:13 pm
Forum: Ideas
Topic: GPS integration
Replies: 14
Views: 2211

Re: GPS integration

jumper idea is great, that way we can still upload the code without needing to reconnect different serial ports. if we can prove that there is enough cpu cycles to perform soft serial, we can program the micro to send telemetry via RS232 to bluetooth (9 dollar items on ebay) on the soft serial pins ...
by lalalandrus
Mon Sep 05, 2011 8:15 am
Forum: Frames
Topic: Wooden frames...
Replies: 5
Views: 2000

Wooden frames...

There seems to be quite a few people making wooden frames. Hobby king m could be torsionally stiffer in the arms but it does the job the entire frame with battery is 730g and *almost* didnt need any tuning at all (reduced the stock 4.0P value to 3.8) Open source models: m i have cleaned up these mod...
by lalalandrus
Mon Sep 05, 2011 8:08 am
Forum: Ideas
Topic: GPS integration
Replies: 14
Views: 2211

GPS integration

I know there is already a thread for GPS integration but the current solutions are softserial and or I2C. Neither is a good solution: 1) SoftSerial uses interrupts which will can cause a huge bag of issues and quite intensive for the CPU 2) I2C requires special chips which translate the readily avai...
by lalalandrus
Mon Sep 05, 2011 8:00 am
Forum: General discussions
Topic: Forum password
Replies: 1
Views: 420

Forum password

I just registered and would like to say that the forum password restrictions are WAY too much. Is there any plan in reducing the need for a special char, caps, numbers and normal letters?

Thanks