I'm looking for quadcopter for study. - Page 1
Forum section: electronics / beginners

author: ammjy
author_rank: Regular Contributor
timestamp: October 14, 2018, 02:59:55 pm
content: Hello !Always, Thanks you forum peoples !now, i'm looking for quadcopter that all spec and design opened. (Propeller's spec, motor model, airframe things..)Can you recommend a model to me ?i want do analysis and modeling myself with known values.Please, let me know.

author: Audioguru
author_rank: Super Contributor
timestamp: October 14, 2018, 11:42:37 pm
content: A quadcopter is a toy. The manufacturer will not publish spec's for any of its parts.Quadcopters, helicopters, model airplanes, model cars and model boats sold by Horizon Hobby have detailed manuals online listing their parts and their part numbers for the parts.

author: StillTrying
author_rank: Super Contributor
timestamp: October 15, 2018, 12:27:37 am
content: www.theverge.com/2018/2/5/16974310/ehang-passenger-carrying-drone-first-test-flight

author: AlcidePiR2
author_rank: Regular Contributor
timestamp: October 16, 2018, 08:19:20 am
content: Having a full open source/open hardware quadcopter is not easy.Indeed the quad is composed of many parts, and some of them may not be open hardware ( like the ESC).It also very much depends the range of quadcopters you are looking for.A possible solution is the well described model publish in the DIYODE magazine ( you have access to everything online for free)https://diyodemag.com/projects/part_one_take_flight_with_h4wkBy the way, DIYODE is a very nice new magazine on electronics, with very pertinent projects and tutorials.This model which is of relatively large size has a lot of possibilities, but will not come cheap. Consider 800$ or moredepending on the options.Open hardware/Open software :You can use open software for all components :- Open TX for the radio transmitter. Be careful to choose one that support it. Taranis X9D is an example that is provided with it.http://open-txu.org/For the main controller board, there are several options of open source software.Adupilot, pixhawk PX4 and several others.It does not mean that the board will be always open hardware.There is plenty of information available on the web : as exampleshttps://www.dronecode.org/http://ardupilot.org/http://px4.io/And the very good youtube channelPainless360https://www.youtube.com/channel/UCp1vASX-fg959vRc1xowqpwI have not much time to do more, but hope this will be useful as a start.

author: CJay
author_rank: Super Contributor
timestamp: October 16, 2018, 08:54:41 am
content: Joop Brokking has documented his QuadCopter projects.

author: Deku Tree
author_rank: Contributor
timestamp: October 16, 2018, 02:41:42 pm
content: Quote from: CJay on October 16, 2018, 08:54:41 amIf you're looking to build stuff from scratch and really learn how they work, the YMFC-3D series from him is great!

author: IDEngineer
author_rank: Super Contributor
timestamp: October 16, 2018, 03:42:32 pm
content: There are semi-standardized ESC and flight controller schematics around. Since competitive drone pilots (my son is one) like to use popular firmware such as BL-Heli and Betaflight, you can't monkey too much with the basic schematic. Beyond picking the basic MCU family (STM32's are the most popular), most of the various vendors differentiate themselves with their choices of FET's, caps, solder pad layouts, voltage regulation, etc.The professional pilots all build their own aircraft. They tune for whatever is their preferred performance, which is affected by dozens of parameters. Some are in firmware, others are physical (such as motor windings, frame dimensions, even battery placement). My son can feel the difference in very slight frame dimensions even when all other components are identical, in fact for each racing season he builds one-offs of many configurations as he narrows down the array of components he will use. Then he builds a fleet of identical aircraft to fly for that season. For example, one of the issues he's toying with is whether to top-mount or bottom-mount the battery. There are excellent arguments for both configurations and religious adherents to both approaches too. My son ignores the chaff and noise and just does his own testing, because every pilot feels and prefers different things. This is more an art than science.Almost every day UPS, FedEx, and USPS deliver components to our house from a surprisingly wide array of vendors. Yesterday he received a couple cubic foot box of props that the vendor just wants him to test. I've lost count of the different motors he's evaluating, many have custom windings that he's dialing in with motor vendors to figure out what they're going to offer in the next 6-12 months.My point here is that we can't really "recommend a model to me". All the commercially available quads are proprietary, and all the privately built ones are extremely specific to that pilot. Your best bet is to spend a LOT of time online and on YouTube, reading and learning how to build them yourself, and then characterize one that YOU have built from components YOU have selected. That's pretty much the only way you'll have collective access to all the data you're seeking.Good luck! It's a very fun profession/hobby but be prepared for the time commitment.

author: ammjy
author_rank: Regular Contributor
timestamp: October 16, 2018, 07:54:11 pm
content: Thanks you very much, Audioguru !you teached me good information.

author: ammjy
author_rank: Regular Contributor
timestamp: October 16, 2018, 07:58:34 pm
content: Thanks you very much, StillTrying !impressive news. i thought only small drones.

author: ammjy
author_rank: Regular Contributor
timestamp: October 16, 2018, 08:02:43 pm
content: Thanks you so much, AlcidePiR2.Really, Thanks you for detail informations and documents, Mr. AlcidePiR2 !i already added that sites in my favorite list in browser.

author: ammjy
author_rank: Regular Contributor
timestamp: October 16, 2018, 08:05:51 pm
content: Thanks you very much, Cjay.i visited that link from your reply. quite nice site.really nice. all components list and detail clearly written.this site really will help me.

author: ammjy
author_rank: Regular Contributor
timestamp: October 16, 2018, 08:08:08 pm
content: Thanks you very much, Deku Tree !yes, quite nice )) i watched his youtube video from your reply. and also his video have detail !

author: ammjy
author_rank: Regular Contributor
timestamp: October 16, 2018, 08:17:50 pm
content: Thanks you so much, detail reply, IDEngineer !your reply make a lot of sense to me. Thanks you so much again, IDEngineer.and your son is very nice boy ! that is can't possible without talent of Math and Electronics, also Dynamics.

author: ammjy
author_rank: Regular Contributor
timestamp: October 16, 2018, 08:21:54 pm
content: Ow, Thanks you very much Blueskull !it's really nice info. i added already ))

author: TK
author_rank: Super Contributor
timestamp: October 17, 2018, 12:40:12 am
content: Crazyflie 2.0 by bitcraze

author: Mechatrommer
author_rank: Super Contributor
timestamp: October 17, 2018, 01:40:42 am
content: even with that if thats still not enough, if you need thing such as propeller specification...http://teacher.buet.ac.bd/mmkarim/propellerlecture.pdf/https://www.rc-airplane-world.com/propeller-size.html

author: StillTrying
author_rank: Super Contributor
timestamp: October 17, 2018, 09:36:24 am
content: FPV groups often have quite technical threads.quadcopterforum.comfpvlab.com/forumswww.fpvhub.com

author: ammjy
author_rank: Regular Contributor
timestamp: October 18, 2018, 01:44:47 pm
content: Thanks you for your help !Crazyflie 2.0 by bitcraze also one of nice quard copter ))

author: ammjy
author_rank: Regular Contributor
timestamp: October 18, 2018, 01:50:22 pm
content: Thanks you for your help, Mechatrommer !it is quite nice informations ! i'm now reading this.

author: ammjy
author_rank: Regular Contributor
timestamp: October 18, 2018, 01:51:35 pm
content: StillTrying, again Thanks you for your help !!you teached me nice sources ! it will help me ! ))