Home
Help
Calendar
Login
Register
New to this forum or RC hobby ? Start here : The RC India Gems !
Welcome Guest, please
login
or
register
.
Reputation
Add to Reputation:
What do you think of this post?
I agree
I disagree
Comment:
RC India
RC Models
Self-designed, DIY and College Projects
Topic:
HoverBot v2
Pages:
1
[
2
]
All
Go Down
0 Members and 1 Guest are viewing this topic.
Topic Tools
Topic Tools
Print
«
Reply #25 on:
March 31, 2012, 10:37:15 PM »
VC
Boat Lover
Forum Hero
Reputation Power: 64
Offline
City: Guwahati
State: Assam
RC Skills: Beginner
Posts: 5598
Join Date: Nov, 2009
L'enfant Terrible du RCIndia
Re: HoverBot v2
How did I miss this awesome creation?!
Btw, the 'secret' solution maybe Silicon Spray???
Logged
Growing old is mandatory, growing up is optional!
«
Reply #26 on:
March 31, 2012, 10:46:25 PM »
Swapnil
Plane Lover
Forum Hero
Reputation Power: 20
Offline
City: Pune
State: Maharashtra
RC Skills: Beginner
Posts: 1755
Join Date: May, 2010
Retreat, Hell!
Re: HoverBot v2
Your appreciation is like an oscar award for me VC sir!
The solution is simply permanent marker ink mixed with moderately diluted glue. I also used a layer of light and supple packing tape for use on tar roads.
Logged
«
Reply #27 on:
April 01, 2012, 01:03:34 AM »
saurabhreigns
Plane Lover
Active Member
Reputation Power: 1
Offline
City: Ghaziabad
State: Uttar Pradesh
RC Skills: Beginner
Posts: 37
Join Date: Mar, 2012
So much to do and so less is done.Hurry up!
Re: HoverBot v2
can i use a brushed motor for lifting a 400 grams,
18"x8" ,thermocol base and parachute fabric skirt.?
how many rpms and voltage would it require with a prop size of 6x4(or 8x3.5 whichever is best suited).
and what will it cost?
Logged
:-)
«
Reply #28 on:
April 01, 2012, 07:01:21 AM »
Swapnil
Plane Lover
Forum Hero
Reputation Power: 20
Offline
City: Pune
State: Maharashtra
RC Skills: Beginner
Posts: 1755
Join Date: May, 2010
Retreat, Hell!
Re: HoverBot v2
You can certainly do that. My 1st hovercraft used a 12V 12000 RPM brushed motor and could easily lift around 1 Kg with a 3-blade 4x3 prop.
The motor+prop combo cost me Rs. 390. I moved on to brushless because I didn't have a brushed ESC then and wanted a linear lift.
Logged
«
Reply #29 on:
April 03, 2012, 12:49:18 AM »
saurabhreigns
Plane Lover
Active Member
Reputation Power: 1
Offline
City: Ghaziabad
State: Uttar Pradesh
RC Skills: Beginner
Posts: 37
Join Date: Mar, 2012
So much to do and so less is done.Hurry up!
Re: HoverBot v2
I hav a small rc heli (cheap chinese toy.),both of its motors are working(when connected directly to a regulated voltage power supply).
It has counter rotating blades. can i use its motor(s) with a new prop for lifting the hovercraft?
Its worthy enough to mention here that the motors are very small (1cm dia,2cm height).
Also i would like to know whether it can be used for propulsion system(if not for lifting)?
Logged
:-)
«
Reply #30 on:
April 03, 2012, 07:36:47 AM »
Swapnil
Plane Lover
Forum Hero
Reputation Power: 20
Offline
City: Pune
State: Maharashtra
RC Skills: Beginner
Posts: 1755
Join Date: May, 2010
Retreat, Hell!
Re: HoverBot v2
O.K, let me tell you that I tried a range of DC motors for the thrust system to keep weight low.
(3V, 6V 8000 RPM, 9V 15000 RPM, 12V 12000 RPM, 12V 16000 RPM etc). Only the 12V 16000 RPM motor gave good enough thrust without heating up.
Because, even though the hovercraft is hovering (frictionless), the thrust motors have to overcome
inertia
.
I have micro helis too. Their motors certainly can't be used for a hovercraft of size 18" x 8".
Logged
«
Reply #31 on:
April 03, 2012, 05:56:19 PM »
saurabhreigns
Plane Lover
Active Member
Reputation Power: 1
Offline
City: Ghaziabad
State: Uttar Pradesh
RC Skills: Beginner
Posts: 37
Join Date: Mar, 2012
So much to do and so less is done.Hurry up!
Re: HoverBot v2
Quote from: Swapnil on April 01, 2012, 07:01:21 AM
You can certainly do that. My 1st hovercraft used a 12V 12000 RPM brushed motor and could easily lift around 1 Kg with a 3-blade 4x3 prop.
The motor+prop combo cost me Rs. 390. I moved on to brushless because I didn't have a brushed ESC then and wanted a linear lift.
can u please tell me the dimensions and skirt specs of this build?it would be great if u can give some pics/videos of it
Logged
:-)
«
Reply #32 on:
April 03, 2012, 06:23:34 PM »
Swapnil
Plane Lover
Forum Hero
Reputation Power: 20
Offline
City: Pune
State: Maharashtra
RC Skills: Beginner
Posts: 1755
Join Date: May, 2010
Retreat, Hell!
Re: HoverBot v2
The skirt design is really simple. The dimensions are (side length in inches) x (6 to 8 inches). Mine is 12x8
The skirt corner design is shown in the pic below.
Re: HoverBot v2
skirt corner.jpg
(18.35 KB, 619x800 - viewed 1510 times.)
Logged
«
Reply #33 on:
August 05, 2012, 09:22:14 PM »
ved
psychic flyer!!
Plane Lover
Forum Hero
Reputation Power: 8
Offline
City: Marcel
State: Goa
RC Skills: Beginner
Posts: 605
Join Date: Sep, 2010
Re: HoverBot v2
Hi Guys
I have made a hovercraft. I want to know how to connect tow ESC to the receiver? I will be connecting the thrust ESC to pit channel. Pls tell me how can I connect it.
Logged
Turnigy 9x w. Er9x | Custom Hovercraft |Scratch Build Boat | Tricopter | Skysurfer V3|
«
Reply #34 on:
October 02, 2012, 07:26:52 PM »
mr ceo
Plane Lover
Active Member
Reputation Power: 1
Offline
City: navi mumbai
State: Maharashtra
RC Skills: Beginner
Posts: 11
Join Date: Aug, 2012
Re: HoverBot v2
very nice build swapnil.
i am too making a hovercraft i have question.
how did u achieve torque balancing.did u use counter rotating props..
waiting for your reply..
Logged
«
Reply #35 on:
October 02, 2012, 09:22:55 PM »
Swapnil
Plane Lover
Forum Hero
Reputation Power: 20
Offline
City: Pune
State: Maharashtra
RC Skills: Beginner
Posts: 1755
Join Date: May, 2010
Retreat, Hell!
Re: HoverBot v2
No, I used a small 3-blade prop for lift with a differential thrust setup.
Logged
«
Reply #36 on:
October 05, 2012, 05:48:23 PM »
mr ceo
Plane Lover
Active Member
Reputation Power: 1
Offline
City: navi mumbai
State: Maharashtra
RC Skills: Beginner
Posts: 11
Join Date: Aug, 2012
Re: HoverBot v2
thanks
Logged
«
Reply #37 on:
March 17, 2013, 12:01:57 AM »
streetjerk
Heli Lover
Active Member
Reputation Power: 2
Offline
City: Kolkata
State: West Bengal
RC Skills: Beginner
Posts: 87
Join Date: May, 2012
Re: HoverBot v2
can u pls explain what is this elevon mixing ? and the other mixing that u tried on your funbot ?
«
Last Edit: March 17, 2013, 12:37:29 AM by streetjerk
»
Logged
«
Reply #38 on:
July 08, 2013, 10:43:42 PM »
lastRites
Lover of all RC
Plane Lover
Forum Hero
Reputation Power: 10
Offline
City: Kolkata
State: West Bengal
RC Skills: Beginner
Posts: 753
Join Date: Nov, 2011
Re: HoverBot v2
I know this is a pretty old thread but I wanted to ask something as I am working on something similar.
How did you interface the RC system with the arduino due? The way I see it is that the receiver outputs PPM and the arduino outputs a modified PPM to the escs right? How does one accomplish that reliably?
Logged
It is the pervading law of all things organic and inorganic,
Of all things physical and metaphysical,
Of all things human and all things super-human,
Of all true manifestations of the head,
Of the heart, of the soul,
That the life is recognizable in its expression,
That form ever follows function. This is the law.
«
Reply #39 on:
July 09, 2013, 07:14:46 AM »
Swapnil
Plane Lover
Forum Hero
Reputation Power: 20
Offline
City: Pune
State: Maharashtra
RC Skills: Beginner
Posts: 1755
Join Date: May, 2010
Retreat, Hell!
Re: HoverBot v2
Hmmm...I don't really understand your query. I analyzed the signals from both the systems on my CRO a long time ago and they were both definitely PWM signals (which is what a servo/ ESC expects).
You don't need to go after the PPM signal unless you need to use more than 2 channels with the arduino.
Also, I did not use an arduino Due (which uses an ARM Cortex M3). I used the Duemilanove and might have shortened it to 'due' while typing.
Arduino generated 'servo-signals' are very reliable and work flawlessly with RC servos and ESCs. I've worked with the servo library a lot since this project. It's very convenient to use and doesn't mess with the rest of your code or hardware.
Logged
«
Reply #40 on:
July 09, 2013, 07:59:56 PM »
lastRites
Lover of all RC
Plane Lover
Forum Hero
Reputation Power: 10
Offline
City: Kolkata
State: West Bengal
RC Skills: Beginner
Posts: 753
Join Date: Nov, 2011
Re: HoverBot v2
The receiver outputs PPM definitely. PPM may look like PWM on the scope as the signals are similar. Correct me if I am wrong
Did you use interrupts?
Logged
It is the pervading law of all things organic and inorganic,
Of all things physical and metaphysical,
Of all things human and all things super-human,
Of all true manifestations of the head,
Of the heart, of the soul,
That the life is recognizable in its expression,
That form ever follows function. This is the law.
«
Reply #41 on:
July 10, 2013, 10:16:52 AM »
Swapnil
Plane Lover
Forum Hero
Reputation Power: 20
Offline
City: Pune
State: Maharashtra
RC Skills: Beginner
Posts: 1755
Join Date: May, 2010
Retreat, Hell!
Re: HoverBot v2
I'm afraid you have a misconception.
The output on each channel is most certainly PWM.
PPM utilizes time division multiplexing to pack multiple (about 9 - 10) PWM signals in a single time-frame. There is indeed a PPM signal at the receiver output before it is de-multiplexed for separating channels. And one needs to tap that in order to decode more than 2 channels with the arduino.
If you still have doubts in this regard you should seriously consider brushing-up your theoretical basics or better yet try working with and analyzing the actual hardware and related signals.
I did use interrupts. But it was completely handled by the servo library.
Logged
«
Reply #42 on:
July 10, 2013, 04:13:49 PM »
lastRites
Lover of all RC
Plane Lover
Forum Hero
Reputation Power: 10
Offline
City: Kolkata
State: West Bengal
RC Skills: Beginner
Posts: 753
Join Date: Nov, 2011
Re: HoverBot v2
Now I get it. I actually do not own a scope and got my theories a bit messed up. My Tx and Rx communicate through PPM. And the Rx outputs PWM.
Another query though. Did you make use of the pulse-in function?
Logged
It is the pervading law of all things organic and inorganic,
Of all things physical and metaphysical,
Of all things human and all things super-human,
Of all true manifestations of the head,
Of the heart, of the soul,
That the life is recognizable in its expression,
That form ever follows function. This is the law.
«
Reply #43 on:
July 10, 2013, 10:53:36 PM »
Swapnil
Plane Lover
Forum Hero
Reputation Power: 20
Offline
City: Pune
State: Maharashtra
RC Skills: Beginner
Posts: 1755
Join Date: May, 2010
Retreat, Hell!
Re: HoverBot v2
Yes. It's good enough for upto 2 channels.
Logged
«
Reply #44 on:
July 10, 2013, 11:34:52 PM »
DArkPrince007
Plane Lover
Active Member
Reputation Power: 1
Offline
City: Navi Mumbai
State: Maharashtra
RC Skills: Intermediate
Posts: 89
Join Date: May, 2013
Re: HoverBot v2
What's differential thrust mechanism .?
Logged
«
Reply #45 on:
July 11, 2013, 12:44:29 AM »
VC
Boat Lover
Forum Hero
Reputation Power: 64
Offline
City: Guwahati
State: Assam
RC Skills: Beginner
Posts: 5598
Join Date: Nov, 2009
L'enfant Terrible du RCIndia
Re: HoverBot v2
Differential Thrust, if I am not mistaken, is all about controlling a craft with varying propeller thrusts on the port / starboard (left/right) sides. It negates the use of a rudder.
Logged
Growing old is mandatory, growing up is optional!
Pages:
1
[
2
]
All
Go Up
RC India
RC Models
Self-designed, DIY and College Projects
Topic:
HoverBot v2
« previous
next »
Jump to:
Please select a destination:
-----------------------------
General Topics
-----------------------------
=> Chatter Zone
=> Beginners Zone
=> RC Events
=> RC People
=> RC India Forum
-----------------------------
RC Models
-----------------------------
=> Electric Planes
=> Helis
=> Cars
=> Kites, Trains, Free Flight and All Others
-----------------------------
RC Equipments
-----------------------------
=> Tools, Materials and Building Techniques
=> Radios and Receivers
=> Electric Power
=> Fuel and Engines
=> Batteries and Chargers
=> Servos, Gyros and All Electronics
-----------------------------
RC Models
-----------------------------
=> Gas/Glow/Nitro Planes
-----------------------------
RC Baazar
-----------------------------
=> For Sale
=> Wanted
-----------------------------
General Topics
-----------------------------
=> RC Outlets and Resellers
-----------------------------
RC Baazar
-----------------------------
=> Free, Donations and Sweepstakes
=> Deals and Special Offers
-----------------------------
General Topics
-----------------------------
=> RC Locations and Clubs
=> RC Maneuvers and Skills
-----------------------------
RC Models
-----------------------------
=> Self-designed, DIY and College Projects
-----------------------------
General Topics
-----------------------------
=> RC General Topics
-----------------------------
RC Baazar
-----------------------------
===> For Sale - Completed
===> Wanted - Completed
-----------------------------
RC Models
-----------------------------
=> Boats
=> Multirotors
Related Topics
Subject
Started by
Replies
Views
Last post
HoverBot Xtreme
Self-designed, DIY and College Projects
Swapnil
20
12419
December 31, 2011, 11:30:16 AM
by
Swapnil
Loading...