quadcopter in one inch

Components

1 × stm32f411 ceu6 cpu

1 × lsm6ds3 imu

1 × lps25hb pressure sensor

1 × lis3mdl magnetometer

2 × drv8839 motor driver

Project Logs

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FAA registration?
jeff • 12/15/2015 at 02:44 • 0 comments

fully assembled with battery, the device weighs 23.5 grams.
making it exempt from the FAA's new registration requirements.
oops...
jeff • 11/13/2015 at 05:36 • 1 comment

I have a feeling this project will require a lot of ceiling paint...
test flight
jeff • 11/13/2015 at 05:36 • 3 comments
assembly underway
jeff • 10/29/2015 at 04:39 • 0 comments

parts received. assembly underway.
3D rendering
jeff • 10/06/2015 at 23:53 • 0 comments
plastic frame
jeff • 10/06/2015 at 02:59 • 1 comment

plastic frame http://shpws.me/KjFl

View all 6 project logs

Discussions

EngineerAllen wrote 02/16/2017 at 12:11

when you design your own flight controller with an ARM 32bit MCU how do you make the firmware and software? isn't that more difficult or do you copy opensource information

thanks

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alexbhandari wrote 04/14/2016 at 00:36

It looks like the board is three layers. There is a single trace on the middle layer. Was space so tight that you needed an extra layer just for that trace?

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jeff wrote 04/14/2016 at 16:20

it is actually 4 layers. the layers without traces are ground and vcc.

any component that needs to connect to gnd or vcc has a short trace on the top layer to a via which connects to it to the gnd or vcc plane.

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Will Rea wrote 12/27/2015 at 12:22

What motors are you using?

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jeff wrote 12/27/2015 at 18:21

hobbyking "0716". replacement parts for some sort of quad that they no longer sell.

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x-labz wrote 12/23/2015 at 19:28

Hey Jeff,

how can you control, give orders to the copter?

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jeff wrote 12/25/2015 at 05:08

I don't give it orders.

it is autonomous, it crashes into things of its own free-will.

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x-labz wrote 12/25/2015 at 15:23

cool :)

...but do You plan to add some short of senses to this poor little blind copter? infrared or UH?

...or by adding propeller cover/protector, it could survive the bumps, and even the CPU could recognize this collisions by analyzing the IMU data

anyway good luck with the project!

Are you sure? yes | no

jeff wrote 12/25/2015 at 21:11

I've used IR on other robotics projects, and wanted to here. the microcontroller has plenty of unused pins, but no room in one inch. next version, perhaps.

it is easy to detect bumps+crashes with the accelerometer, but I don't have a recovery algorithm better than "turn off motors", yet.

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alpha_ninja wrote 12/07/2015 at 00:32

[verified: no design files missing]

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guybthe wrote 12/05/2015 at 18:46

I know the goal is to do a 1 inch project, however would your control board work w/ larger scale drone / props / motors assuming more energy storage and step up for the larger motors? Very interested in this as a lightweight controller.

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jeff wrote 12/06/2015 at 21:40

the motor drivers won't handle too much more, they'd need to be beefed up,

and possibly the voltage regulator, if you want a higher voltage.

but the rest of the ckt should be fine.

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alpha_ninja wrote 12/02/2015 at 00:46

This is your one-week reminder to upload design documents: https://hackaday.io/project/7813-the-square-inch-project/log/28566-design-deadline

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Albert Latham wrote 11/09/2015 at 21:38

Could you do a short post on the PCB, code, and other things involved in flight control?

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jeff wrote 11/10/2015 at 01:12

I just updated the github with the schematic, board, and cad files. I'm still working on the code.

did you have questions?

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Albert Latham wrote 11/10/2015 at 01:22

I saw that the control board has an STM chip which made me immediately think of Paparazzi. Is your code Paparazzi based?

Are you sure? yes | no

jeff wrote 11/10/2015 at 04:48

no, not based on anything

Are you sure? yes | no

Albert Latham wrote 11/10/2015 at 04:58

Look into Paparazzi. The code is very mature and is compatible with your main processor. You could potentially save a lot of development time by using it. (I'm biased as I worked with a system that was Paparazzi driven.)

Are you sure? yes | no

Ivoah wrote 10/09/2015 at 00:32

Why are the rotors tilted inwards? Does it help with stability?

Are you sure? yes | no

jeff wrote 10/09/2015 at 19:03

yes, it improves the stability. google the word "dihedral", if you are interested.

(but disclaimer: I am not an aeronautical engineer)

Are you sure? yes | no

quadcopter in one inch

Description

Components

Project Logs

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FAA registration?

oops...

test flight

assembly underway

3D rendering

plastic frame

Discussions

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