Basic articles
 
1. What is a drone?
 
UAV is the abbreviation of Unmanned Aerial Vehicle. It is an unmanned aircraft using radio remote control equipment and its own program control device, including unmanned helicopters, fixed-wing aircraft, multi-rotor aircraft, and unmanned airships. , Unmanned paraglider. In a broad sense, it also includes near-space vehicles (20-100 km airspace), such as stratospheric airships, high-altitude balloons, solar drones, and so on. From a certain perspective, drones can perform complex aerial flight tasks and various load tasks under unmanned conditions, and can be regarded as "air robots".
 http://www.mmcuav.com

2. What is flight control?
 
The so-called drone flight control is the drone's flight control system, which mainly includes gyroscope (flying attitude perception), accelerometer, geomagnetic induction flight control, air pressure sensor (rough control of hover height), ultrasonic sensor (low altitude) Precise control or obstacle avoidance), optical flow sensor (precision determination of horizontal position when hovering), GPS module (rough positioning of horizontal position and height), and control circuit. The main function is to automatically maintain the normal flight attitude of the aircraft.
 
Remote control articles
 
1. Remote control and receiver?
 
An airplane aircraft needs to be controlled by a device. This device is a remote control. The corresponding aircraft needs a device that can receive commands from the remote control. This device is a receiver. The remote controller and the receiver communicate via radio waves. The commonly used radio frequencies are 72Mhz and 2.4Ghz (in the early days, 72MHZ long wave was mainly used, and now technology advances mainly use 2.4GHZ short wave). The remote controller can set some flight parameters, such as the forward and reverse of the throttle, the sensitivity of the joystick, the neutral position adjustment of the steering gear, the function definition of the channel, the recording and reminder of the aircraft time, the setting of the liver function, and the advanced model Battery voltage and current data returned and so on.
 
2. Crystal and frequency?
 
When using a 72MHz remote control, due to the openness of radio waves, from 72.010MHz to 72.99MHz in the 72Mhz band, a channel is allocated every 20kHz, a total of 50 channels, so that there is one each for the remote control and the receiver A frequency generator (crystal oscillator) with the same frequency allows the receiver and the remote control to communicate at the same frequency. With the advancement of technology, the 2.4Ghz remote control no longer needs to be paired with a single crystal. It only needs to directly perform frequency calibration between the remote control and the receiver, so that the remote control and the receiver can directly establish a communication connection. For home use remote control toys, due to requirements and price reasons, 40MHZ and 27Mhz are mainly used. Sometimes the remote control with the same frequency can be universally operated with each other. This problem also exists on the aircraft model. Therefore, when the 72Mhz remote control was used early, When you arrive at the flying field, everyone will first understand each other's remote control frequency bands to avoid miscommunication operations. 2.4Ghz, now commonly used, is not needed.
 
3. Definition and requirements of remote control channel?
 
The remote control will have several channels to control, commonly known as several channels. For example, the common SkyFly 6 is six channels. An airplane aircraft, some of which need to be manually controlled by remote control. For example, power control, commonly known as throttle, elevator, rudder, aileron, flaps, landing gear, smoke puller, lights, etc., each item needs a separate channel to control, but some items need to be very precise and non- Level operations, such as throttle, lift, direction, aileron, and some item controls are fixed to several gear operations, such as flaps, landing gear, lights, etc. For the above remote control, there are rocker and joystick definitions, such as throttle, Lift, direction, ailerons are operated with joysticks, and flaps, landing gear, lights, etc. are operated with joysticks.
 
4. What are the differences and definitions between Japanese and American hands?
 
Because the areas where the model activities were carried out earlier were in Japan and North America, the functions of the two joysticks and four channels in the controller are different in these two areas. As in Japanese hands, the left stick: the up and down elevator, the left and right are rudders; the right stick: the up and down are throttle rudders, and the left and right are aileron rudders. American hand left stick: throttle up and down, left and right rudder; right stick: up and down, elevator, left and right aileron rudder. This is mainly based on personal preferences. It is like driving a car with a left rudder, mainly in mainland China and North America, a right rudder, mainly in the Commonwealth countries and some regions, such as the United Kingdom and Hong Kong. From the perspective of theoretical safety, the left rudder is better in the northern hemisphere, but more of it is mainly a matter of habit formation. The advantages and disadvantages of the American hand and the Japanese hand are usually the difference in operating speed in the operation of some extremely difficult movements. Usually, everyone uses more Japanese hands for the fixed-wing and more American hands for the helicopter.
 
5, the choice and brand of the remote control?
 
The remote controls are imported and domestic brands. The domestic ones are Tiandifei, Walkera, FlySky, FrSky, RadioLink, and Futaba (Japan), JR (Japan), ROBBE (Germany), Graupner (Germany), the early domestic electronic level was poor, and the quality of the control was average. Now the quality of domestic control is quite stable, and the cost is high. The Chinese interface of the device is easy to operate and affordable, and the matching receiver is also cheap. A set of remote control and receiver can not exceed 1,000 yuan. Choose Futaba T8FG 14SG, JR 9X XG7XG11, the price set starts from 1500, and the receiver is expensive. Beginners can start with FS-I6 or FrSky Tanaris X9D, and then upgrade according to the needs of the aircraft they are playing. Usually, fixed-wing aircraft and helicopters only need six channels to control, and even early four channels can be used, that is, the throttle. , Aileron, lift direction.
6. What is the difference between PCM and PPM?
 
This mainly refers to the encoding method of the remote control. PPM is equivalent to analog transmission. The radio waveform is directly transmitted to the receiver and transmitted to the servo for execution. The receiving needs to have decoding and restoring process, which is passed to the servo for execution. Similar to the previous analog signal transmission television and the current digital signal television.

Minus 30marks for not using diagram

vertueptime:
Minus 30marks for not using diagram

True...I will personally remove 40 mark from 100 mark he has for not putting pictures.



Good morning muslims of the world and everybody that lives in this planet earth. My name is Muhammadu J.adu Bello. I am the first born of Shehu Ibrahima bello Adua ( the chief Imam of Aduani Central mosque .. number 51 Osedi road Kano.) I am a fulani by tribe my mother is a yoruba from Osogbo. I am the acting Chief Imam of Adua central mosque by grace of allah. I will become the next chief imam of the central mosque.


This is my encounter and testimony I had with the lord Jesus Christ. I never believed Jesus or Christian , infact I hate chriastians because I have been thought from childhood that the chriastians changed the gospel of Jesus Christ. If they had left it the way it was everybody would had been a muslim so for this reason I hate Christians.I dont kill them but I have nothing to do with them. I used to buy Bibles from gates confess before man of God before tearing the Bible.

Until recently, precisely on monday about 3:45am when I had an encounter with the lord jesus Christ.That was 23rd of the Islamic calender (25) of Ramadan April 2019. I was praying leading the people in the mosque , my uncle was present with 2 elders of the mosque with 7other members of the mosque located at Jumani Central mosque in Makurdi number 51 on the road leading to market. It is the biggest Mosque there just opposite Methodist.I was reading the first chapter of the Quran called "becuase it summarizes the whole 6620 verses in the quran". When I got to verse 4 of the quran ( man reciting it in Arabic )allof a sudden a light from nowhere appeared very brightly that it filled the whole mosque. I have never seen such light because its brighter than the Sun.

The bright light was not bringing heat but rather cold because I could feel it on my feet even though the mosque was not equipped with aircondition and the few fans present were not even put on. Right in the brightness of the light a voice of a man spokeout to me. The voice spoke to me in Arabic saying " I should comeout of them. " The voice told me that I should come out of Islamic religion but I replied the voice by asking who he was? I also told the voice that Islam is the right religion. The voice replied that Islam is not the right religion and his mission is to bring me to the right part. He said he is the truth and light. I quickly replied that its not possible because the voice is claiming to be anobi Isa.

I said if truely you are Jesus , Jesus cannot be the way , the truth and light instead Muhammed is the way. The voice said that is a lie that i should listen to him that time has come he wants to safe me and use me as a platform of glory to deliver my muslim brothers from darkness of Islam to the light of the gospel. I replied the voice saying its a lie and that if truely the voice is Jesus he should make its self visible I want to see him.

The voice replied me saying I am not qualified to hear him let alone to see him. I replied saying but people saw you Jesus when you were growing up. the voice said that was when I was not glorifed but now am glorified which makes me not qualiferd to see him. I replied saying but am a righteous man. I fast every friday and monday, am a sunnis muslim ( most holy sect of the 73 sect in Islam ) , i don't fornicate , I give part of salary to the poor every month. The voice said he could see that I was dedicated and committed is the reason I want to safe you.

I said to the voice if you are Anobi Isa you should know that am knowledgeable because my argunent is based on the the quran and also you should tell me what I used to ask God when I pray. I was amazed flabergastered when he told me all the things I have been saying to almighty allah for the past 10year. Then I remembered that the Quran says its only God that knows the secret things in the heart of men but this Jesus knows the secret things of my heart. I am sorry I want to believe JESUS CHRIST is GOD

I remember he said that except I become born again I cannot see the kingdom of God. I said that that is a lie and am not stupid. I am literate both academically and quranically. I studied in accra Ghana and spent 15year in Qatar to study the quran ( the interpretation and memorization of the quran ) I said is nonsense and it's not possible to be born again. He said I should find out from the christians what it means to be born agan.

After this scene and everything had settled I asked my uncle and the elders ofthe mosque if they saw any bright light ( they are my witness ) they said yes but did not hear any sound. I told them all that happened. I instead was told that the voice I heard is a demon and want to stop me from being ordained the chief imam of the central mosque which was scheduled to happen soonest.

I was invited to come and lead them in a prayer yesterday, and after the prayer I came out to return home I suddenly heard a voice telling me to move upward towards a church that is nearby. when I get there I should tell them I want to give my life to Jesus. Right there in the church the voice told me to tell the members that the pastor is God choosen one for his generation when he prays his prayer gets to heaven but his members are too familiar with him. They don't do what he tells them to do hence the reason why their prayers are not answered. Though I did not tell them all these things when I got to the church but was quick to tell them I wanted to give my life to Jesus. ( born again )

After I told them I wanted to give my life to jesus, I was told the pastor would soon join me because he was in a prayer meeting. When the pastor came out, he said its God's time Jesus has saved you he will do his work. I went home but I remember in his prayer he said this Jesus will visit me and give me the holy spirit. But while I was in the church my father was busy calling me to come to the mosque and attend to people waiting for me and that he wanted to know where I was so that he could send a driver to pick me. I refused to give my location to my father the pastor would bear me withness because it was right in his presence it happened.


when i got home my father said he doesnt want to hear anything about Jesus anymore in the house that I should forget it unless I want to be digging my grave. I sad father it has not gotten to that and I went to sleep.Later that day my father came to my room to call me to observe the prayer of ramadan but I pretented to be sick and told him I could not so he gave me medicine to that efffect .

The voice that used to minister to me had told me earlier not to observe such prayers because I can not serve two masters. When he told me this I challenged him quotng the quran why he would want me to disobey my parents. His reply was that he is the God of heaven and earth and my parents do not even know me. When my father put the semen in my mother did I know how it developed into a baby in the womb? He asked me So later that day my father came again after he had given me the medicine around 3:15am to ask after my health and also to come and lead the prayer but told my father that the illness still persist that I could not come. Finally he came around 5:00am that I should go and lead the most important prayer but still told him that am still not strong to pray with them. It was at this point that my father told me that I should know that he is my father and not a small boy , he knows when am sick and he wants to tell me categorically clear that I was not sick all this while. That when I was sick last year I still came to the mosque to pray.

This real God is not really wicked. want to ask my brothers and sister in Islam, is this not a bondage? If GOd is really merciful and gracious he should understand and not force you to pray. Please note that am not crazy, stupid or that some christians have come to bribe me because I know that this is what would be going through their minds. I know this because have been there before. All of you should know that am sane and ok that is why am mentioning my fathers name " Ibrahim Amadu Bello " The chief Imam of Aduani central mosque. He is a car dealer and leader of all sunnis muslims in the area. I am a chartered accountant and I am not a poor man.

Now all of you muslims know that my desire is to go to heaven. I look for this heaven and can not be found EXCEPT in this JESUS. Why am I saying this? Quran 2:285..it says " Allah says o ye believers among the muslims believe in all the books and prophets.this means the Bible is included. So how would all of a sudden the same Quran would come and say that the bible is dirty? Allah says that believe in all of the 124,000 prophets this is the believe of all muslims. Allah says all of them have come short of his glory except JESUS the son of marry. Fine he did not say son of God it does not matter but allah says only him is worthy.

Now quran says muhammed should interceed for us in the day of judgement. according to hadith qudus . Now how is that possible that muhammed that is with sin . The quran says allah says instruct muhammed verse 32 to ask for forgiveness and I would forgive your present and future sins. That means muhammed is with sin that is why allah would forgive him. Allah says that this Jesus is without any sin . Therefore I believe the man without sin is worthy to interceed for sin on the day of judgement.

All of you know am well educated in this faith. My father sent me to Qatar to study quran. I am sorry am saying nothing but the truth because allah told us in the quran to tell the truth even they would cut off your head. I am sory this is the truth am not saying this to please anybody. I want to please my lord jesus christ who had visited me on monday and who has safed my soul from condemnation of hell fire. I appreciate him and am so grateful to him for saving me.

This morning as the story continues brothers and sisters I was put inside a room because my father was angry. What happened was that he asked me to go to the mosque and I said no. He said he was going to take his bath that when he comes back and am not in the mosque he will order some body guards to forcefully bundle me to the mosque.I replied I heard but was worried. Then I heard the voice that speaks to me telling me my son stand up from the bed and I should say after him just as I said after the pastor that lead me to christ . I was reluctant but the voice said there was power in confession. The voice said my servant who lead you to christ ought to have told you that am about to tell you. i said I did not understand what the voice was saying The voice said the confession i made yesterday was not by my power. I replied that but what man needs to do is good works to get to heaven The voice replied saying good works alone can not get you to heaven but confessing Jesus as the lord and personal lord and savior would guaranty. No one gets to heaven until he believes in the finished work of Jesus Christ on the cross of Calvary.
If not forget it ,it does not matter who you are Hindus, budist, Muslim e.t.c This is the hard truth.

The voice says I should say after him ...as many have received him he has given power to become sons of God even them that believe in his name . The voice said I should continue saying it till it becomes part of my spirit. I kept saying it until I got to 7th time my brother until now I can't explain my experience in detail...I saw something like a flame of fire and of a sudden while my house roof was opened the flame came in target towards me. I was engulfed by this fire and I started rolling on the floor. My people could testify to this because my clothes I was putting on were dirty. I was rolling on the floor and as if someone was forcing me to speak.

All of a sudden I started speaking in strange language loudly and continuously. When my father came into the room and saw me rolling on the floor and speaking in strange language at the same time he thought I was running mad. Everyone my mother, sisters were crying because they thought I was running mad.

My father ran out quickly to a nearby hospital to call a doctor called doctor Joseph.. When the man came to my house and saw me and he began to say he was amazed and happy. My father fought the doctor telling him why he would be happy or amazed at his son running mad? The doctor replied saying he is happy because Jesus has finally visited my family. The doctor said he should remember how he used to preach to my father and he rejects him and even throw Bible at him and warns him never to preach to him again. The doctor said I have been visited by the holy ghost.

My father replied the doctor that he himself must be running mad because according to my father in Quran 40:8 that Muhammed is their leader and he his the holyspirit and therefore the said holyspirt can not teach his son to accept Jesus as son of God just as the Quran 112 : 1-5 says God has no son. Before I go further Jesus once told me that this verse of the Quran contradict itself with Quran 2:23 I said no Quran can't contradict itself.

Quran 112:1-5 says God has no father or son or mother. He didn't give birth to anyone and no one gave birth to him and no one helped in his creation. Then if this is true then why did the Quran Quran 2:23 ( abulbakur ) where Allah says...we create the heaveans and earth. We gave them two ears and 2 eyes. Now the word " we " Jesus told me consist of 3 trinity God. That means there are three in creation.

My brothers and sisters in Islam you could see that Quran even confessed Jesus please open Quran 8:4 Allah says Jesus Christ is the spoken word of God and the spirit of God. So for this reason it is important why we need to follow Jesus Christ before it is too late . I am not insulting anybody my Muslim people the Quran is there for you to confirm.

Now Jesus told me again to open the Quran to Quran 1:4 as pointed to me why if Mohammed was the way he wouldn't be asking God while praying every time to show him the straight path. I mean he didn't really know the way. Now I saw the man that says he is the way the truth and life that no one comes to the father except through him. I feel free from the bondage while the key is given to me.

Let me tell you how how I came out of the room when he angrily sent the Christian doctor away when the doctor started talking about Jesus being the one visiting me and family.. I was worried and wondered how my family would get safed too because they are very deep into Islam it was then I realized that it is only Jesus that can visit them the way he visited me.

When my father locked me inside after he had slapped me I wanted to change my mind and beg him that he should forgive me that it was a demon but the holy spirit warned me not to think that way introducing himself as the holy spirit that the voice I encountered within the light was Jesus that I should stop thinking negative things instead I should think what is holy, righteous as a man thinketh in his heart so he is.

He said that fear is not part of his kingdom it is of the Satan. Never doubt I have created the whole world but only the Christians are my chosen. I said how do you mean ? You mean Muslims are not part if it? He said yes the Christians are his royal priest chosen to shine Gods light only that many of them are afraid and they see the word of God as an ordinary story words. Some even think that the miracle in the Bible can only happen in the day of old and not in the present modern day. Those kind of look warm Christians I don't want you to become like them. The holy spirit says many of the Christians doubt the word of God they worship God with their mouth and not their hearts.

The holy spirit now says hold the door of the room and open it. I said but the door is locked with key and the key is with my father. He said hold the door and open it because when I open a door no one closes and the one I close no one opens. I tried opening and to my surprise I have never encountered such a thing in my life the door opened.

Immediately the door opened I saw my biological father close to the door and so I was afraid but the holy spirit told me not to be afraid that I should walk through that my father will not hear or see me. I summon courage and did as he commanded and truly my father could not see me.

Then the holy spirit said I should charter a taxi going to Agege at cathedral road I declined that I know nobody there. He said when I get there I should ask for a company called Abbbi yoghurt. I was surprised and asked why he was sending me to a Muslim. He said when I get there I should tell him he should believe in Jesus because people have been preaching about Jesus to him but wanted to get healed before he would believe. He said I should tell him my personal encounter with Jesus he will believe me.

When I got there he was not around but met some people or workers that told me to wait. They called him and told him that I was waiting and that I said I had a strong message for him concerning his sickness. He said he was coming but later said he couldn't make it that he would send his wife. I opened up on my encounter with Jesus Christ to his wife and his wife gave her life to Jesus. I told the wife to call her husband to narrate my encounter with Jesus and the message the holy spirit told me to tell him. He too gave his life to Jesus . The husband confessed that few minutes after the confession the illness disappeared and he was completely healed.

Later the husband called and wanted to reward me handsomely because he was rich but I warned by the holy spirit not to take his money and also I should not take his phone number because my mission with him as ended for now and there is no need for his phone number. He said my purpose is to show the light ofJesus to MUSLIMS and to tell Christians how valuable is JESUS they carry or have.

I want to tell my brothers and sisters in Islam that no matter how holy you are you can't connect to heaven only JESUS is the way to heaven I beg you my Muslim brothers and sisters I want the salvation of your soul to be for Jesus Christ as your lord and personal saviour I pray to my father Jesus Christ to safe you and to deliver you from darkness.