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Software / Skid Steering (Differential Thrust) on a boat calculations
« Last post by grimsy on October 29, 2020, 05:52:56 PM »
The usual starter line, if Im not in the right place let me know but heres the story:

Ive got a model boat wired up with a raspberry pi(Experimenting with python I'm aware there's better options haha), wired up to two regular DC motors. Now I feel like I'm missing something simple here, probably just blind from staring at the thing too  much, but I cant figure out how to calculate the differential steering at all. I'm completely clueless. admittedly calculations arent my strong suit, this is just a hobby for me.

So basically, I have an initial thrust value of 0-100 and a steering value of -1 to 1. -1 on steering being left. Reversing will come later, first I gotta move at all  :D

So what I've got to figure out is what the right motor PWM and left PWM is for any given value of the two variables.

As I said, its a hobby, I may be doing something stupid or ridiculous here so let me know, I'm beginning to doubt if python really is the best choice and I'm thinking of migrating over to c++. Either way though if anyone can give some advice or even just point me in the right direction to figure out the problem it would be very much appreciated.
Mechanics and Construction / Soldering a lead to a motor that connects to a receiver.
« Last post by nastycpa on October 28, 2020, 12:43:39 PM »
I have a motor, I have lead wires and I have a receiver. 
I can solder the lead wires to the motor and plug the other end into the receiver.  The problem is that I can't figure out what combination of wires (Black, Red, Yellow) to solder onto the motor.  I currently have the Red on the positive and black on the other However that results in the motor running nonstop (even when the controller to the receiver is turned off).  All other combinations result in no movement. 
Picture attached.  I probably need to solder the yellow wire to the motor some place...
Any advice?
For Sale / Velodyne VLP-16 For Sale. New opened box.
« Last post by cowboyzack on October 25, 2020, 06:45:58 PM »

I’m selling A Velodyne VLP-16 lidar. Its unused and its only been opened for display purposes.

It comes with the interface box, ethernet cord and DC power supply

Ready to ship anytime

Here is the EBAY listing :

Price: $4000 obo
Please dm me if you have any questions

Software / Re: please help webotlib page is no longer exist
« Last post by Admin on August 10, 2020, 07:30:01 PM »
I contacted the owner of WebbotLib.

For now, you can get it from here:
Software / Re: new WinAVR and AVR Studio versions
« Last post by Admin on August 10, 2020, 07:29:00 PM »
You can also find the last version of WebbotLib here:
Software / Re: new WinAVR and AVR Studio versions
« Last post by Admin on August 10, 2020, 07:21:18 PM »
AVR Studio download links above no longer work.

You can find the archived links for download here:
Misc / Here is Practical Explanation about Next Life, Purpose of Human Life,
« Last post by tesae on July 26, 2020, 09:05:27 AM »
Practical Explanation ( For Example ) :- `1st of all can you tell me every single seconds detail from that time when you born ?? ( i need every seconds detail ?? that what- what you have thought and done on every single second )

can you tell me every single detail of your `1 cheapest Minute Or your whole hour, day, week, month, year or your whole life ??

if you are not able to tell me about this life then what proof do you have that you didn't forget your past ? and that you will not forget this present life in the future ?

that is Fact that Supreme Lord Krishna exists but we posses no such intelligence to understand him.
there is also next life. and i already proved you that no scientist, no politician, no so-called intelligent man in this world is able to understand this Truth. cuz they are imagining. and you cannot imagine what is god, who is god, what is after life etc.
for example :Your father existed before your birth. you cannot say that before your birth your father don,t exists.

So you have to ask from mother, "Who is my father?" And if she says, "This gentleman is your father," then it is all right. It is easy.
Otherwise, if you makes research, "Who is my father?" go on searching for life; you'll never find your father.

( now maybe...maybe you will say that i will search my father from D.N.A, or i will prove it by photo's, or many other thing's which i will get from my mother and prove it that who is my Real father.{ So you have to believe the authority. who is that authority ? she is your mother. you cannot claim of any photo's, D.N.A or many other things without authority ( or ur mother ).

if you will show D.N.A, photo's, and many other proofs from other women then your mother. then what is use of those proofs ??} )

same you have to follow real authority. "Whatever You have spoken, I accept it," Then there is no difficulty. And You are accepted by Devala, Narada, Vyasa, and You are speaking Yourself, and later on, all the acaryas have accepted. Then I'll follow.
I'll have to follow great personalities. The same reason mother says, this gentleman is my father. That's all. Finish business. Where is the necessity of making research? All authorities accept Krsna, the Supreme Personality of Godhead. You accept it; then your searching after God is finished.

Why should you waste your time?
all that is you need is to hear from authority ( same like mother ). and i heard this truth from authority " Srila Prabhupada " he is my spiritual master.
im not talking these all things from my own.

in this world no `1 can be Peace full. this is all along Fact.

cuz we all are suffering in this world 4 Problems which are Disease, Old age, Death, and Birth after Birth.

tell me are you really happy ?? you can,t be happy if you will ignore these 4 main problem. then still you will be Forced by Nature.

if you really want to be happy then follow these 6 Things which are No illicit s.ex, No g.ambling, No d.rugs ( No tea & coffee ), No meat-eating ( No onion & garlic's )

5th thing is whatever you eat `1st offer it to Supreme Lord Krishna. ( if you know it what is Guru parama-para then offer them food not direct Supreme Lord Krishna )

and 6th " Main Thing " is you have to Chant " hare krishna hare krishna krishna krishna hare hare hare rama hare rama rama rama hare hare ".
If your not able to follow these 4 things no illicit s.ex, no g.ambling, no d.rugs, no meat-eating then don,t worry but chanting of this holy name ( Hare Krishna Maha-Mantra ) is very-very and very important.

Chant " hare krishna hare krishna krishna krishna hare hare hare rama hare rama rama rama hare hare " and be happy.

if you still don,t believe on me then chant any other name for 5 Min's and chant this holy name for 5 Min's and you will see effect. i promise you it works And chanting at least 16 rounds ( each round of 108 beads ) of the Hare Krishna maha-mantra daily.
Here is no Question of Holy Books quotes, Personal Experiences, Faith or Belief. i accept that Sometimes Faith is also Blind. Here is already Practical explanation which already proved that every`1 else in this world is nothing more then Busy Foolish and totally idiot.
every `1 is already Blind in this world and if you will follow another Blind then you both will fall in hole. so try to follow that person who have Spiritual Eyes who can Guide you on Actual Right Path. ( my Authority & Guide is my Spiritual Master " Srila Prabhupada " )
if you want to see Actual Purpose of human life then see this link : ( triple w ( d . o . t ) asitis ( d . o . t ) c . o . m {Bookmark it })
read it complete. ( i promise only readers of this book that they { he/she } will get every single answer which they want to know about why im in this material world, who im, what will happen after this life, what is best thing which will make Human Life Perfect, and what is perfection of Human Life. ) purpose of human life is not to live like animal cuz every`1 at present time doing 4 thing which are sleeping, eating, s.ex & fear. purpose of human life is to become freed from Birth after birth, Old Age, Disease, and Death.
Misc / Re: About the Forums
« Last post by Admin on July 24, 2020, 09:26:03 PM »
Ok, finally fixed it. My .htaccess was wrongly redirecting certain files and Cloudflare cached it.
Software / Re: please help webotlib page is no longer exist
« Last post by hassan.iftikhar on July 19, 2020, 01:45:19 AM »
Did you find anything?

I am also trying to work with axon2, are there any alternatives to work with ? Please help ...
Misc / Re: About the Forums
« Last post by Admin on July 13, 2020, 10:16:07 PM »
I have no idea whats going on myself, just started seeing this.

I'll try to fix it soon, out of town for a few days. Ugh!
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