HardLabs

Fc

cookiemonsternz·drone·hardware/fc/fc.kicad_pcb

Fc PCB layout, top view — open source STM32 board by cookiemonsternz
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About the Fc PCB

Fc is an open source STM32 PCB design by cookiemonsternz, published on GitHub. It is a 6-layer board measuring 28.3 × 28.3 mm, with 72 components from 37 distinct parts.

Its main chip is the STM32F405RGTX, from the STM32 family. Other key parts include the ICM-42688-P, MAX7456EUI+, TPS62173DSG, BL8072CLTR33 and SGM2212-3.3XKC3G. By type, the board carries 30 capacitors, 14 resistors, 9 ICs, 9 connectors, 4 diodes and 2 crystals.

It belongs with the robotics & motion and sensors designs in this gallery.

From the project

F\~ishPV is a open source, custom stack, 75mm tinywhoop drone design. It utilises AM32 for the ESC firmware and Betaflight for the flight controller.

F\~ishPV is a open source, custom stack, 75mm tinywhoop drone design. It utilises AM32 for the ESC firmware and Betaflight for the flight controller.

Custom components include a from-scratch frame, designed for 3d printing (in HP-12-CF filament), a fully custom 15A ESC, and a custom FC.

The ESC: - 15A Continuous - 20A Peak for 5s (unverified :O) - 2S Battery (only) - AM32 Firmware - DSHOT Communication + Voltage telemetry - Current Sense

Fc, from the project README
From the project README

Main components on the Fc

STM32F405RGTXICM-42688-PMAX7456EUI+TPS62173DSGBL8072CLTR33SGM2212-3.3XKC3GW25Q128JVSIQ TRBMP280

Fc bill of materials (BOM)

72 components, 37 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
STM32F405RGTX
STM32F405RGTx
U1
1
ICM-42688-P
U2
1
MAX7456EUI+
max7456eui+
U3
2
TPS62173DSG
U4, U5
1
BL8072CLTR33
U6
1
SGM2212-3.3XKC3G
SGM2212-3.3XKC3G/TR
U7
1
W25Q128JVSIQ TR
U8
1
BMP280
U10
1
Q_PMOS
Q1
1
27MHZ
27MHz
Y1
1
CSTNE8M00G520000R0
Y2
1
Camera
J1
1
ELRS
J2
1
Buzzer
J3
1
VTX
J4
1
ESC
J5
1
USB_B_Micro
J6
1
Debug
J7
1
UART5
J8
1
UART4
J9
Show 17 more
QtyPartRefs
1
SW_Push
SW2
2
LED
D1, D2
2
D_Schottky
D3, D4
2
2.2UH/2A
2.2uH/2A
L1, L2
16
100NF
100nF
C1, C2, C3, C6, C7, C8, C9, C10 +8
2
47UF
47uF
C4, C5
3
2.2UF
2.2uF
C11, C28, C29
1
10NF
10nF
C12
4
1UF
1uF
C13, C14, C15, C16
2
22NF
22nF
C17, C18
2
22UF
22uF
C27, C30
4
75
R1, R2, R5, R6
2
10K
10k
R3, R14
3
100K
100k
R4, R11, R15
2
22
R7, R8
1
1k
R9
2
2.2K
R12, R13

Fc design files

The KiCad project lives in the cookiemonsternz/drone repository on GitHub; these links point at the commit this page was built from.

Fc: common questions

What microcontroller does the Fc use?

The Fc is built around the STM32F405RGTX, from the STM32 family.

How big is the Fc PCB?

The Fc measures 28.3 × 28.3 mm, has 6 copper layers and is 1.6 mm thick.

How many components are on the Fc?

72 components, from 37 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.

Where can I download the Fc design files?

From the cookiemonsternz/drone repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.

Can I use the Fc design in my own project?

The repository has no license, so all rights stay with cookiemonsternz. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the Fc 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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