Hey, I'm making a small drone for a project, and wanted to test if the circuit can run. it has just 4 dc motors, and i just wanted to ask if i did something wrong before trying it irl since im new. Here it is
Welcome to the forum
Are you really using 3 9V batteries of that type ?
What is that mysterious chip on the breadboard ?
Why are all 4 motors connected in parallel when the speed of each needs to be controlled individually ?
Maybe it's a drone elevator what only needs to go up and down. 
But four motors in parallel would never do that IRL.
a7
I dont know if i should use 2 or 3, or if thats even the right battery to power 4 dc motors. The chip on the breadboard is a mosfat or nmos. And I just wanna make the drone move up and down to start with
Yeah, to start i wanna make it go up and down since its only my second project and i dont know how to make it control and move sideways yet, and theyre not meant to be parallel, i have a simple plus shaped frame irl but didnt bother to place them like that here
If you mean as a prelude to doing more, that is to say you have in mind a vehicle with propellers on four arms (quadcopter)…
… you will quickly learn a great deal about the physics.
Believe it or not, getting a quadcopter to hover or move only up and down is plenty tricky even with the assistance of the IMU.
At least I hope you know you will need to have two motors rotating clockwise and two rotating anticlockwise, kitty corner motors spinning in the same direction.
Do you have a way to figure out the size and power of the motors that will be necessary? What about propellers?
If this is to be battery operated, what battery weight and voltage and current providing capacity?
I may sound pessimistic. There's a reason for that.
But we have seen on these fora ppl going from zero to hero, so that could be you too.
Here's a forum member that, had I been listened to, would have skipped all the fun of getting something to fly. If you find his profile, you can list his activity and see a number of threads.
HTH
a7
Ok thanks that was really helpful, and yes what i have in mind is a quadcopter. Its turning out to be a bit more tricky than i first thought though. I have two weeks time to finish this as we have to make a project for physics, and I wanted to challenge myself more this time. I have a background in coding, but this is my first time doing electronics stuff so i appreciate your help. Any more parts i need to be aware of that im missing to make a quadcopter?
Google is your friend.
Conspicuously absent in your depiction of the hardware is anything that will serve as the IMU, that component which provides at least a gyroscope and usually an accelerometer as well.
I can only wish you luck. Set reasonable goals, remember I am a pessimist and also somewhat lazy; two weeks won't see much progress I am afraid.
a7
Start by considering how you will control the speed and direction of rotation of each of the motors independently and how much power is needed for the motors. I predict that 3 (or more) PP3 batteries will not provide enough power for the quadcopter for any reasonable flight to be achieved. Consider using a LiPo battery
Do you know what an IMU is ?
If not then you will need to find out very soon
How do you intend to control the quadcopter. Will you use radio control of some kind, maybe Bluetooth, and what hardware will you use for the transmitter ?
Sorry, but starting from where you are now there is no chance that you will have an Arduino controlled quadcopter flying in 2 weeks even if you "borrow" someone else's hardware and software designs
@mugen56 have you visited the ArduPilot website? There's a lot of useful information to be found there. There are some ready made drone kits that may give you an idea of the relevant components used.
I thought I was a pessimist.
a7
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Ok thanks I didn’t know it was this complicated of a task to pull off, again haven’t done much work with an arduino. Ill stick to trying to make just an elevating one and take scaling slowly. Thanks again
Alright thanks, didnt know it was a big task. Im glad i posted here first, thanks to everyone.
Thanks Ill look into it
To make a quadcopter that simply goes up and down you will still need to consider all of the factors that I mentioned in post #9
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Maybe aim for 1-axis control with one motor on a see-saw:
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A "TT" DC motor max RPM is around 200.
A brushless "copter" motor RPM starts around 2,000.
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