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SPAR

HazzerTheGreat·SPAR·PCB/FlightControllerV2.kicad_pcb

SPAR PCB layout, top view — open source STM32 board by HazzerTheGreat

About the SPAR PCB

SPAR is an open source STM32 PCB design by HazzerTheGreat, published on GitHub. It is a 6-layer board measuring 48 × 58 mm, with 104 components from 45 distinct parts.

Its main chip is the STM32H743VITx, from the STM32 family. Other key parts include the ICM-42688-P, LM66200DRLR, BMP280, SM03B-SRSS-TB(LF)(SN) and AP2112K-3.3. By type, the board carries 52 capacitors, 16 resistors, 15 connectors, 13 ICs, 4 inductors and 2 crystals.

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

From the project

A flight controller for fixed wing UAVs based on the STM32H7 and designed to run betaflight or INAV

This is a flight controller primarily designed for fixed wing aircraft (or quadcopters etc) that is designed to run either BetaFlight, INAV or ArduPilot firmware. It handles flight stabilization, OSD, control of servos, waypoints, data logging and anything else any other flight controller can do. This flight controller has an STM32H743 which is an extremely capable MCU with a blazing fast speed of up to 480MHz. Most likely overkill for the majority of applications but it can accomodate for the most demanding projects. I made it as I was interested in the design of such systems and also enjoy…

SPAR, from the project README
From the project README

Main components on the SPAR

ICM-42688-PLM66200DRLRBMP280SM03B-SRSS-TB(LF)(SN)AP2112K-3.38122S-25.000NQ33FTLSTM32H743VITxLMR33630ARNXRSM06B-SRSS-TB(LF)(SN)AT7456E

SPAR bill of materials (BOM)

104 components, 45 distinct parts.

QtyPartRefs
1
ICM-42688-P
TDK InvenSense(应美盛)
U1
1
LM66200DRLR
TI(德州仪器)
U2
1
BMP280
U3
1
SM03B-SRSS-TB(LF)(SN)
LED1
JST
U4
1
AP2112K-3.3
U5
1
8122S-25.000NQ33FTL
25MHz
HCI(杭晶)
U6
1
STM32H743VITx
U7
2
LMR33630ARNXR
TI(德州仪器)
U8, U9
1
SM06B-SRSS-TB(LF)(SN)
HD
JST
U10
1
SM03B-SRSS-TB(LF)(SN)
LED2
JST
U11
1
AT7456E
杭州中科微
U12
1
SM03B-SRSS-TB(LF)(SN)
CAM
JST
U13
1
SX3M32.768KM20F30TNN
32.768kHz
SCTF(星通时频)
X1
1
SX3M27.000M20F30TNN
27MHz
SCTF(星通时频)
X2
1
SM04B-SRSS-TB(LF)(SN)
ASPD
JST
CN1
1
SM04B-SRSS-TB(LF)(SN)
MAG
JST
CN2
1
SM04B-SRSS-TB(LF)(SN)
VTX
JST
CN3
1
SM04B-SRSS-TB(LF)(SN)
GPS
JST
CN4
1
SM04B-SRSS-TB(LF)(SN)
ELRS
JST
CN5
1
Micro_SD_Card
J1
Show 25 more
QtyPartRefs
1
BOOT0 Header
J2
1
USB_C_Receptacle_USB2.0_16P
J3
6
Conn_01x03
J6, J7, J8, J9, J10, J11
1
SM08B-SRSS-TB(LF)(SN)
ESC_Connector
JST
P1
1
USBLC6-2SC6
ST(意法半导体)
D1
1
PD9
D2
2
600@100MHz
FB1, FB2
2
SMMS0530-100M
10uH
SXN(顺翔诺)
L1, L2
3
2.2uF
C1, C2, C33
25
100nF
C3, C4, C5, C6, C7, C10, C11, C12 +17
9
22uF
C8, C23, C24, C25, C26, C38, C39, C40 +1
4
10uF
C9, C17, C20, C35
2
220nF
C21, C36
5
1uF
C22, C37, C42, C43, C44
2
47uF
C28, C29
1
10nF
C31
1
4.7uF
C45
5
10k
R1, R2, R3, R6, R7
2
5.1k
R4, R5
2
100k
R10, R12
1
24.9k
R11
1
12.4k
R13
2
1.2k
R16, R17
2
75
R18, R19
1
200
R20

SPAR design files

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

SPAR: common questions

What microcontroller does the SPAR use?

The SPAR is built around the STM32H743VITx, from the STM32 family.

How big is the SPAR PCB?

The SPAR measures 48 × 58 mm, has 6 copper layers and is 1.6 mm thick.

How many components are on the SPAR?

104 components, from 45 distinct parts. The full bill of materials is listed on this page.

Where can I download the SPAR design files?

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

Can I use the SPAR design in my own project?

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

Can I test firmware for the SPAR 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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