HardLabs

Rc helicopter mainboard

ikajdan·rc-helicopter-mainboard·hardware/rc_helicopter_mainboard.kicad_pcb

Rc helicopter mainboard PCB layout, top view — open source STM32 board by ikajdan

About the Rc helicopter mainboard PCB

Rc helicopter mainboard is an open source STM32 PCB design by ikajdan, published on GitHub under the CERN-OHL-P-2.0 license. It is a 2-layer board measuring 50 × 50 mm, with 49 components from 31 distinct parts.

Its main chip is the STM32L4P5RET6, from the STM32 family. Other key parts include the AOZ1280CI, LM1117-3.3, LM321, NRF24L01_Breakout and MPU-9250. By type, the board carries 22 capacitors, 10 resistors, 7 ICs, 4 connectors, 1 crystal and 1 fuse.

It belongs with the power & battery and sensors designs in this gallery.

From the project

RC helicopter mainboard based on an STM32 MCU

This project is a custom PCB control system for an RC helicopter, centered around the STM32L452RET6 microcontroller. It manages key functions including motor control (main, tail, and servos), sensor interfacing (MPU, BMP), wireless communication (NRF module), and data logging (SD card).

It consists of two main components: the Mainboard for onboard control and the Remote for ground-based operation.

Rc helicopter mainboard, from the project README
From the project README

Main components on the Rc helicopter mainboard

STM32L4P5RET6AOZ1280CILM1117-3.3LM321NRF24L01_BreakoutMPU-9250BMP280

Rc helicopter mainboard bill of materials (BOM)

49 components, 31 distinct parts.

QtyPartRefs
1
STM32L4P5RET6
U1
1
AOZ1280CI
U2
1
LM1117-3.3
U3
1
LM321
U4
1
NRF24L01_Breakout
U5
1
MPU-9250
U6
1
BMP280
U7
1
16MHz
Y1
1
Battery Pack
J1
1
SWD
J2
1
Main Connector
J3
1
Micro_SD_Card
J4
1
1A
F1
1
SolderJumper_3_Open
JP1
1
Tactswitch
SW1
1
SK36A
D1
1
2.2μH
L1
2
22pF
C1, C2
13
100nF
C3, C4, C5, C6, C7, C8, C11, C14 +5
2
10nF
C9, C16
Show 11 more
QtyPartRefs
1
4.7μF
C10
1
10μF
C12
2
10μF
C13, C17
1
4.7μF
C22
3
10kΩ
R1, R2, R6
1
330Ω
R3
2
4.7kΩ
R4, R5
1
39kΩ
R7
1
7.5kΩ
R8
1
100kΩ
R9
1
33kΩ
R10

Rc helicopter mainboard design files

The KiCad project lives in the ikajdan/rc-helicopter-mainboard repository on GitHub; these links point at the commit this page was built from.

Rc helicopter mainboard: common questions

What microcontroller does the Rc helicopter mainboard use?

The Rc helicopter mainboard is built around the STM32L4P5RET6, from the STM32 family.

How big is the Rc helicopter mainboard PCB?

The Rc helicopter mainboard measures 50 × 50 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Rc helicopter mainboard?

49 components, from 31 distinct parts. The full bill of materials is listed on this page.

Where can I download the Rc helicopter mainboard design files?

From the ikajdan/rc-helicopter-mainboard repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Rc helicopter mainboard design in my own project?

Yes, under the terms of its CERN-OHL-P-2.0 license, which ikajdan chose for the repository.

Can I test firmware for the Rc helicopter mainboard without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug STM32 firmware against it before you order a PCB.

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