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2 layers94.4 × 94.4 mmFC v1, the printed circuit board in 3D

A cheap, light and, small autonomous drone with ~100g payload capacity

Size
94.4 × 94.4 mm
Copper layers
2
Thickness
1.6 mm
Parts
18
Nets
95
Pads
149
Tracks, vias
203, 18
Routed
Yes
KiCad
KiCad 10.0 (file 20260206)
Created
16 Mar 2026
Updated
22 Mar 2026

Overview

FC v1 is an open-source printed circuit board by jacobjuneau6, from the jacobjuneau6/AutoFly repository on GitHub, published under the MIT licence. It is a 2-layer board of 94.4 × 94.4 mm with 18 parts on 95 nets, routed with 203 tracks and 18 vias.

Its parts include 4 connectors and 3 ICs. It belongs with the ESP32 and RISC-V boards of this library.

README

README.md

AutoFly

A cheap, light and, small autonomus drone with ~100g payload capacity and ardupilot

Why

I made AutoFly as a successor to a pevious autonomus quadcopter that was not able to fly due to low power budgeting. With bigger motors and a 4X larger battery it should fly perfectly. I have always liked autonomus drones for the simple fact that it focuses entirely on design and tuning compared to FPV drones where the pilot plays a cirtical role.

Assembly

assembly photo

PCB

pcb photo

External Wiring

hand drawn

BOM

NamePurposeQuantityTotal Cost (USD)LinkDistributor
Custom PCBhold all of the FC components112.50PCBWAY
Alibaba Shipping Customs and taxAlibaba Shipping Customs and tax115.45Alibaba
Aliexpress shipping & taxAliexpress shipping & tax14.30Aliexpress
Amazon Shipping & TAXAmazon Shipping & TAX17.67Amazon
M3 screwshold down various components18.49https://www.amazon.com/Self-Tapping-Screws-Phillips-Carbon-Plastic/dp/B0BPM8J5F5Amazon
Deans T connectorsbattery connector11.75https://www.aliexpress.us/item/3256806681263722.html?utparam-url=scene%3Asearch%7Cquery_from%3A%7Cx_object_id%3A1005006867578474%7C_p_origin_prod%3AAliexpress
1mm pitch connectorsallows connecting standard drone peripherals to the FC113.22https://www.digikey.com/en/products/detail/pololu/4772/19529079Digikey
APM2.5 power monitormeasures the power and current off the battery to enter failsafe mode when battery about to die19.99https://www.amazon.com/Pixhawk-BEC-Helicopter-Quadcopters-Accessories/dp/B0BCJQR3YN?th=1Amazon
3S lipo batterypowers the drone114.24https://www.amazon.com/OVONIC-Airplane-Quadcopter-Helicopter-Multi-Motor/dp/B077P73SDS?th=1Amazon
Propellersprovides the motors a way to generate lift116.99https://www.amazon.com/uxcell-Propellers-Quadcopter-Airplane-Adapter/dp/B07QK5CXK8Amazon
Power distribution boardsends power from the battery to all 4 escs14.51https://www.aliexpress.us/item/3256806649142265.html?mp=1Aliexpress
2205 2300kv brushless motorsallows drone to fly18.61https://www.aliexpress.us/item/3256808432301575.html?utparam-url=scene%3Asearch%7Cquery_from%3A%7Cx_object_id%3A1005008618616327%7C_p_origin_prod%3AAliexpress
BLHeli-s 20A ESCsprovides power and control to the motor129.61https://www.aliexpress.us/item/2255800001568515.html?utparam-url=scene%3Asearch%7Cquery_from%3A%7Cx_object_id%3A4000187883267%7C_p_origin_prod%3AAliexpress
HGLRC M100-5883 GPS and CompassProvides location and heading data to the FC118.99https://www.amazon.com/HGLRC-M100-5883-GPS-Generation-Compatible/dp/B0CB5N8RQ8Amazon
ESP32C3 super miniProvides the transmitter and reciver19.99https://www.amazon.com/AITRIP-ESP32-C3-Development-Board-Bluetooth/dp/B0FBGDFPBQ?th=1Amazon
ICM-42688 IMUTells the drone its orientation and acceleration18.39https://www.alibaba.com/product-detail/AI-KSEN-Six-Axis-IMU-Module_1601663823996.html?selectedCarrierCode=SEMI_MANAGED_STANDARD%40%40STANDARD&priceId=8b43f52ef39e4de496b68d31a66a839fAlibaba
GY-BMP280provides an altimeter10.43https://www.alibaba.com/product-detail/GY-BME280-5V-GY-BMP280-5V_1601291648398.html?selectedCarrierCode=SEMI_MANAGED_STANDARD%40%40STANDARD&priceId=194c7af6cc614cb9b190c4876a9feccdAlibaba
STM32H743VIT6Will be the brains of the drone111.80https://www.alibaba.com/product-detail/STM32H743VIT6-STM32H750VBT6-STM32-STM32H-STM32H7-Core_1601368312109.htmlAlibaba

Parts

18
QtyValueFootprintReferences
4~AutoFly:ESC-connectorE1, E2, E3, E4
2530470610AutoFly:4772J1, J4
2~AutoFly:UntitledU2, U3
1ESP32-C3_SUPERMINI_THESP32-C3_SUPERMINI_TH:MODULE_ESP32-C3_SUPERMINI_THU1
1LOGOAutoFly:HCG***
1LOGOAutoFly:HCBWG***
1LeftConnector_PinHeader_2.54mm:PinHeader_2x22_P2.54mm_VerticalJ2
1RightConnector_PinHeader_2.54mm:PinHeader_2x22_P2.54mm_VerticalJ3
1~AutoFly:ICM42688ICM1
1~AutoFly:BMP280MP1

The 15 most common of 18 parts.

Questions

How big is the FC v1 PCB?

It measures 94.4 × 94.4 mm and has 2 copper layers, 1.6 mm thick.

What parts does the FC v1 use?

18 parts. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.

Where can I download the FC v1 KiCad files?

From the jacobjuneau6/AutoFly repository on GitHub, at the commit this page was made from: the board is FC-v1/FC-v1/FC-v1.kicad_pcb and its schematic FC-v1/FC-v1/FC-v1.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

Can I use the FC v1 design in my own project?

Its repository publishes it under the MIT licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).

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