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(For wiki information on superceded products please see the archive)
 
The wiki is de-centralised to make it easier to find product specific information - For wiki information for a MultiWiiCopter.com product or a sub-product - please go directly to THAT product's page on this website - or to the related page of a sub-product - ie if you are building a Scarab kit then information on prop balancing is contained on the Prop balancer page itself.  Information about ESC temps will be found on the ESC page (not the Scarab kit page) ; or information about care and setup of motors is found on the motor page ; information about a v4r6 PARIS on that product page etc..
 

Transmitter Calibration 

multiwiicopter-transmitter-calibration.jpg

MultiWii software requires an accurately calibrated radio Tx - To do this it offers a USB interface called a GUI which shows you the output errors of your RC radio and allows you to correct/calibrate them to be accurate !  DO NOT SKIP THIS first STEP - see right - every transmitter is slightly different - Create a new model memory on the Tx and Call it PARIS.  Make sure your PC/Mac has JAVA loaded enabled - The GUI runs on JAVA - do a cold restart after installing Java - connect the Receiver (Rx) to the PARIS, connect the PARIS to your FTDI-USB - this supplies 5v power (after installing the FTDI drivers - HERE - cold restart) and turn on your Transmitter (Tx) and set ACRO(airplane) & PPM(not PCM).  If your not sure leave your Radio on factory settings.  99% of RC radios output PPM and work with PARIS out of the box.  Do NOT connect anything else yet (like ESC) to the PARIS ! -  then Launch the matching 2.2->2.2 Config or 2.2->2.2 Application/program on your PC or Mac or the latest code 2.2 and whilst looking at your PC screen - you will see that changes made on the Tx are sent to the PARIS via your Rx - and actual critical uSEC readings - 1095/1500mid/1905 can be set. If you cannot get it exact then use 1090/1500/1910.   PARIS is a digital interface and the software running invisibly inside requires very specific digital PWM uSEC numbers to hover 100% auto-level, arm, disarm etc.  So this may seem a bit weird but you will be using/pressing buttons on your Tx whilst your eyes are looking at your PC or Mac.  So move all sticks to the centre - set all Tx trims to neutral - Now use SUB TRIM MENU on your Tx to set all mid points to 1500 on these blue bars.  Then move, one at a time,move each stick to the low position and set 1095; then move each stick/switch to the high position and set 1905.  Then go back and check all your midpoints are still 1500    Do this for all sticks and switches.  
 
Orientation - the light blue bars (above) MUST move in the same direction as the stick you are moving - If they do not then REVERSE that Ch in your Tx.  So if you move the throttle stick up - then the blue Throttle bar should move up.  If you move your rudder right then the YAW bar should move right.
 
For Multwii code 2.2 or later (New Multiwii Code 2.2 use 1.0.5 Arduino HERE - make sure you use GUI 2.2 to match it -  clear the eeprom and make sure you recalibrate the ACC and MAG after any version changes - Calibrating a MAG means press the button and then rotating the Quad XYZ 360° in 30 secs)
 
thanks ..... take care and Fly Safe -  Quinton  AlouetteIII
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Australian Customers - Please sign the PETITION for improved FPV legistlation in AU
the petition was submitted to the Parlimentary inquiry into drones 21st March 2014

fpvau-countme-in-250.gif       united-states-fpv.jpg

USA FPV Customers - Please sign the Oregon Bill 71 Petition HERE 

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Understanding RC Safety - MultiWiiCopters

for MultiWiiCopter PARIS customers; by AlouetteIII  © MultiWiicopter.com 2011
 
• Keep your PROPS OFF - not installed - until you are fully conversant/understand in full the functions of your Tx in full including TRAV (end Points), the arm and disarm procedures -  realise that for a noob skiping or out-of-order set-up steps or moving sticks, or even static -  PROPS may start at anytime without warning.  Never install props prior to calibration of the ESC and testing the gyro orientation, and arm/disarm testing of the board - YOU are responsible - make sure your actions and your Copter is safe.  Never ASSUME the props will not start - removing the props removes the risk.
 
Set Mode 2 (Throttle on left) Mode 2 mimics a real helicopter where the pilot operates
the 'Collective/Pwr' with his left hand - and the 'cyclic stick' with his right.
Set your Tx to ACRO (basic Airplane) mode - set PPM (not PCM), Activate Ch5 (Gear-Mode)
Read your Tx/Rx product manuals - You as the Pilot are responsible for safety.
 
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The MultiWiicopter.com team commandments  - We wrote this list in RC blood - this is not some cheap cut-n-paste - read and pilot-up - multicopter are complex aircraft not toys ....
  1. Balance all Motors - dynamic - you must do this step. see here
  2. Balance all Props - static on a prop balancer and also dynamic by running them to check vibration and eliminate it - if you have not balanced your props you are an ameatuer hack - sorrrrry - but it's true - you will create a raft of problems for your IMU and your video productions - just do it and accept that this is part of multicopter culture and setup - Do not bullshit yourself.  For Folding props make sure they are exactly the same weight and have the same friction setting - pivot with the same forces both sides
  3. Check all Prop adapter collets and shafts are true - not bent - check each prop & motor combos are balanced and vibration free when running
  4. Mount all sensors on gel or PU gel  - always - we recommend PU Gel or high end Helicopter mounting tape for the IMU - do not use the dji tape supplied - we dont
    Be sure to separate all electronic devices at least 90mm from other devices - Do not place the CPU or the IMU up close to ESC, GoPro or FPV gear!! Bad idea.  For dji pilots - > Monitor the Pilot LED lights at all times especially dji products for "white Sparking" in flight - ignoring or failing to understand that white sparking is serious warning will lead to a pilot failure to respond and centre all controls -> crash - this is a sign you have a bad vibration issue - so abort - land and fix it.. 
  5. Mount all GPS/MAG pods well away from all RMI ESC and the main LiPo - NEVER use the DJI lollypop stick - but make sure it not blurred from vibration - ie vibrating so much it looks blurry  - use a small analogue compass to detect EMF fields - do not put your compass in a vib zone or where it gets interference when the copter is running
  6. Solder all wires with solder flux paste amtech 223 - don't use cored solder or weak soldering irons - we use a FAST 80w iron with a very large copper - the s800/z15 pulls ±32amps in hover at 25v  - we used XT60 (60 amp rating) but we take care to size them to make sure they are tight (not the plastic - the pins) - make sure the soldering is perfect either way by using flux paste and a really big (fast) iron head. XT60 can handle short burst of high temp but not long slow heat from small irons. NEVER USE Y Cables in a Power train - solder dual redundant cables to remove any single point of failure in the supply lines
  7. Set all failsafe channels and test them LIVE to check the stability of the RC signal - we set up a mix, to shift the modes channel to failsafe - with a switch
  8. Do a proper RC range check of the RC radio with all FPV gear powered on - dont get lazy and skip this check - its very important
  9. Test all FPV gear at 200m on the ground - establish which of the 8 freq. is the strongest at long range - Do not mount FPV antenna near RC in or near carbon
  10. Check all push connectors are firm - loose or soft connection cause engine/esc failure - for S800 and RC connectors use contact-X on all push on RC connectors - Esp in coastal zones
  11. Check all data line are 100% secure - tied but not pulling - For dji PCB pins - check none are loose or wiggling
  12. Check all props for fatigue cracks or stress fractures - understand that copper wires - bent back-n-forwards can crack internally inside plastic booms
  13. Do a pull test on all Props before every flight to check security - for s800 check the props tip-plane-path from the side
  14. Do post flight temp checks on all ESCs and all motors
  15. Telemetry Monitor every cell of the LiPo in flight with Quanum or similar - do not rely on total voltage alone
  16. Route all data lines well away from ESCs - for ESC this is easy as the ESC are under the motors
  17. Operate the CPU/IMU on a dedicated 12v 3S DC bus for large multicopters >8kg - this isolates DC spikes from motors from effecting the CPU
  18. Check all wires for airframe shorting - dull down any sharp edges on carbon with a diamond file - pinched wires, cut or chaffed wires will cause major issues - check 
  19. Check the airframe is grounded to prevent static entering data lines - props create static - it has go somewhere
  20. Separate all RC receiver antenna wires by 90° and keep away from carbon structures - use long antenna -  dont tape antenna near carbon, or carbon landing gear
  21. For all push connectors - ie s800 booms or all RC plugs - clean them with ACETONE first - dry - then use Inox or Corrosion-X or Deoxit Gold similar sprays to prevent corrosion - less is more - blow away excess with air gun nozzle
  22. Ground your aircraft at the slightest hint of abnormal ops of any component, such as motor hesitation or any other sign of human error (a loose wire noticed) or hanger rash
  23. Remove all risk - if you fly over a crowd of people the risk is falling - so don't fly over crowds or people or the ocean -   Wear safety glasses - props can cut your hands or EYES !
  24. Program and test GPS return to home - even A2 or Wookm has no collision avoidance - be sure to set 50% throttle immediately it start to RTH - be 100% familiar with GPS over ride procedures and fly on MANUAL if req'd
  25. Never assume - problems come in groups - its never just one thing, if you find a problem - look again.  Make sure for Hexii that you understand IOC engine failure procedures that it will spin and possibly descend - understand that an OCTA will crash if the IMU is vibrated too much or an autopilot brown out occurs -
  26. Check the voltage of your Main CPU rail is exactly 5v - use multiple C1 caps on the 5v DC rail
  27. Use loctite - Make sure the entire airframe is 100% rigid and secure - vibration can loosen flight critical parts. Loctite must be heated before your try to remove a screw withit - and can be cleaned and disolved in Acetone
  28. Use a checklist and stick to it - all Pro-pilots use checklists - look for problems - Especially vibration - DO an IDLE vibration check before take off !  on every flight !
  29. Make 100% sure you ALWAYS see the LED signals - this is vital for "White Sparking" observations - if you ignore White sparking warnings via the LED  - you will suffer consequences
  30. Calibrate all sensors - often.  The GPS pod also contains a delicate MAG Compass - calibrate it in away from metal - all metal - including cars and houses.
  31. Weigh your Aircraft - use different GAINS for different weights - carry a scale - check the weight.
  32. Set the C of G assmetrically - never in the middle - the goal is to force all the engines to run at different RPM in the hover to PREVENT RESONANCE occuring - so set the C of G 10mm forward and to the side 5mm at least
  33. Carry spare parts - that way if you have a problem - and are under the hammer to get the flight done - you can safely install the spare part first in minutes - then fly.
  34. As the pilot in command EVERYTHING is your fault - if anything goes wrong - YOU as the Captain are responsible afterward.  Posting up your sad story on a forum wont change anything "after" a crash.
 
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Q. Whats Required to be a UAV Pilot in Australian Skies?

Answer = In order to operate an RPA on comm Ops (Remotely Piloted Aircraft – the new terminology used by CASA for an Unmanned Aerial Vehicle) for commercial gain (and this includes Uni's , Police Forces, Farmers or anybody who makes a buck directly or even indirectly from such activity - basically anybody except a hobby flyer) in Australia you require a Controller Certificate (CC) and the company that you will fly for (even if it is your own company) needs an Operator Certificate (UOC) In order to apply for a Controller Certificate 

For a CC you need to:

  1. Obtain an ARN (Aviation Reference Number) from CASA
  2. Contact CASA at uas@casa.gov.au for a letter of dispensation for the requirement to sit the BAK exam.
  3. Arrange with ASL or an approved flying school to sit the PPL exam.
  4. Complete your manufacturer’s assessment. Please contact RPAS Training and Solutions (RTS), a Sydney based company who can offer  manufacturer’s assessments for our Scarab/PARIS/DJI aircraft in AU.
  5. Obtain your Aircraft Radio Operator Certificate of Proficiency (AROCP)
  6. Log 5 flying hours on your RPA yourself and document all flights in a logbook
  7. Compete and submit your CC application form and supporting docs to CASA as a pdf. Currently the fee is AUD160

You can study for the PPL Theory exam at home or if you wish you can join a Full Time course. They have several courses available from 5 to 15 days or even weekend courses but I recommend you get away from your normal work and crack the 5-day Full Time PPL Theory Course at RPAS Training and Solutions. The course is AUD1,400 + GST and they even include an actual 1 hour flight at the end of the course to experience airspace use in-person. There is also an additional option to have an instructor come to your office - details on application.

The CASA PPL Exam is approx AUD150. RTS have an RPAS Training video explaining all the PPL requirements for the RPAS course as well as a Controller Certificate.  Once you have a CC in your hand you need to team up with a Certified Operator who has a Full OC - then work directly under his Company licence using his CASA approved Operations Manual and comply in full with his SMS and procedures, or you could apply for your own Operator Certificate. Hope this helps guys (& girls!) to become part of the drone world that's arrived and thriving.

 




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