GS Mainboard
About the GS Mainboard PCB
GS Mainboard is an open source STM32 PCB design by Queens-Rocket-Engineering-Team, published on GitHub. It is a 4-layer board measuring 68 × 78 mm, with 133 components from 66 distinct parts.
Its main chip is the STM32F103C8T6, from the STM32 family. Other key parts include the LMR51430XDDCR, K78L03-500R3, 296-LMR51450FNDRRRCT-ND, LM66100DCKR and LM74700QDDFRQ1. By type, the board carries 46 resistors, 37 capacitors, 12 transistors, 11 connectors, 11 diodes and 9 ICs.
It belongs with the rf & radio and sensors designs in this gallery.
From the project
QRET Avionics hardware, firmware, and documentation for 2023 to 2025.
This directory contains all schematics involved in this iteration of the Avionics system.
Main components on the GS Mainboard
GS Mainboard bill of materials (BOM)
133 components, 66 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | STM32F103C8T6 | LQFP-48_7x7mm_P0.5mm | U1 |
| 1 | LMR51430XDDCR | SOT-23-6_Handsoldering | U2 |
| 1 | K78L03-500R3 | K78Lxx-500R3_MNS_SIP3 | U3 |
| 1 | 296-LMR51450FNDRRRCT-ND | LMR51450SDRRR | U4 |
| 2 | LM66100DCKR | LMR66100_SC-70-6 | U5, U6 |
| 2 | LM74700QDDFRQ1 | LM74700_SOT-23-THIN_1P6X2P9_TEX-M | U7, U8 |
| 1 | ACS37041KLHBLT-010B3 | APS12628LLHALTBAP_HandSolder | U9 |
| 8 | AO3400A | SOT-23 | Q1, Q2, Q3, Q4, Q5, Q7, Q10, Q11 |
| 2 | AO4447A | SOIC-8_3.9x4.9mm_P1.27mm | Q6, Q8 |
| 2 | AO4406A | SOIC-8_3.9x4.9mm_P1.27mm | Q9, Q12 |
| 1 | ARGB_OUT | PinHeader_1x3_P2.54mm_Drill1.02mm | J3 |
| 1 | FAN1 | PinHeader_1x3_P2.54mm_Drill1.02mm | J6 |
| 1 | FAN2 | PinHeader_1x3_P2.54mm_Drill1.02mm | J7 |
| 1 | RGB12V | TerminalBlock_bornier-4_P5.08mm | J8 |
| 1 | RTX_PWR | TerminalBlock_bornier-2_P5.08mm | J9 |
| 1 | AUX_PWR | TerminalBlock_bornier-2_P5.08mm | J11 |
| 1 | SRC_IND | TerminalBlock_TE_282834-3_1x03_P2.54mm_Horizontal | J12 |
| 1 | BATT1 | TerminalBlock_bornier-2_P5.08mm | J13 |
| 1 | BATT2 | TerminalBlock_bornier-2_P5.08mm | J14 |
| 1 | SWITCH | TerminalBlock_bornier-2_P5.08mm | J15 |
Show 46 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | POWER | TerminalBlock_bornier-4_P5.08mm | J17 |
| 1 | ATC Fuse | Fuseholder_Keystone_3555-2 | F1 |
| 1 | SW_STM_RESET | SW_Push_1P1T_XKB_TS-1187A | SW1 |
| 1 | SW_STM_BOOT_MODE | SW_Push_1P1T_XKB_TS-1187A | SW2 |
| 1 | 10k | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | TH1 |
| 1 | DB_LED (YLW) | LED_0805_2012Metric | D1 |
| 1 | 3.3V PWR (GRN) | LED_0805_2012Metric | D2 |
| 1 | 5.0V PWR (GRN) | LED_0805_2012Metric | D3 |
| 1 | 12V PWR (GRN) | LED_0805_2012Metric | D4 |
| 5 | WS2812B | LED_WS2812B_PLCC4_5.0x5.0mm_P3.2mm | D5, D6, D7, D8, D9 |
| 2 | SS54 | D_SMA | D10, D11 |
| 1 | 100R | R_0805_2012Metric | FB1 |
| 1 | 12uH | L_Bourns_SRR1260 | L1 |
| 1 | 4.7uH | L_Bourns_SRN8040TA | L2 |
| 1 | 10n | C_0603_1608Metric | C1 |
| 1 | 10uF | CP_Elec_4x5.4 | C2 |
| 2 | 4.7uF | C_0805_2012Metric | C3, C19 |
| 2 | 1uF | C_0805_2012Metric | C4, C8 |
| 6 | 100n | C_0402_1005Metric | C5, C6, C9, C10, C32, C33 |
| 5 | 100nF | C_0603_1608Metric | C7, C11, C14, C18, C20 |
| 1 | 10uF | C_0603_1608Metric | C12 |
| 1 | 22uF | C_0603_1608Metric | C13 |
| 2 | 22uF | C_0805_2012Metric | C15, C16 |
| 1 | 1000uF, 25V | CP_Radial_D10.0mm_P5.00mm | C17 |
| 4 | 47uF | C_0805_2012Metric | C21, C22, C26, C31 |
| 1 | 2000uF, 25V | CP_Radial_D12.5mm_P5.00mm | C23 |
| 1 | 33pF | C_0402_1005Metric | C24 |
| 1 | 100uF | CP_Elec_6.3x5.9 | C25 |
| 7 | 1uF | C_0603_1608Metric | C29, C30, C34, C35, C36, C37, C38 |
| 1 | 0.1u | C_0603_1608Metric | C40 |
| 11 | 10k | R_0603_1608Metric | R1, R17, R26, R35, R37, R38, R41, R44 +3 |
| 10 | 100k | R_0603_1608Metric | R2, R3, R18, R21, R23, R25, R29, R40 +2 |
| 1 | 680R | R_0603_1608Metric | R4 |
| 1 | 3.3k | R_0603_1608Metric | R5 |
| 1 | 15k | R_0603_1608Metric | R6 |
| 2 | 68k | R_0603_1608Metric | R7, R8 |
| 1 | 3.6k | R_0603_1608Metric | R9 |
| 1 | 33k | R_0603_1608Metric | R10 |
| 1 | 6.2k | R_0603_1608Metric | R11 |
| 1 | 1k | R_0603_1608Metric | R12 |
| 2 | 30k | R_0603_1608Metric | R13, R14 |
| 1 | 47k | R_0603_1608Metric | R15 |
| 1 | 13k | R_0603_1608Metric | R16 |
| 8 | 510R | R_0603_1608Metric | R19, R20, R22, R24, R27, R39, R42, R48 |
| 2 | 100k | R_0402_1005Metric | R28, R49 |
| 2 | 75k | R_0603_1608Metric | R34, R36 |
GS Mainboard design files
The KiCad project lives in the Queens-Rocket-Engineering-Team/Avionics-23-26 repository on GitHub; these links point at the commit this page was built from.
GS Mainboard: common questions
What microcontroller does the GS Mainboard use?
The GS Mainboard is built around the STM32F103C8T6, from the STM32 family.
How big is the GS Mainboard PCB?
The GS Mainboard measures 68 × 78 mm, has 4 copper layers and is 1.6062 mm thick.
How many components are on the GS Mainboard?
133 components, from 66 distinct parts. The full bill of materials is listed on this page.
Where can I download the GS Mainboard design files?
From the Queens-Rocket-Engineering-Team/Avionics-23-26 repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the GS Mainboard design in my own project?
The repository has no license, so all rights stay with Queens-Rocket-Engineering-Team. Use it as a reference, and ask the author before reusing the design.
Can I test firmware for the GS 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.
More boards in Avionics-23-26
STM32Sensors Module
69.5 × 62.6 mm184 parts4LNo license3
ESP32Kuhglocke GS
65 × 70 mm115 parts2LNo license3
STM32QRET 23-24 SRAD Power Module
69.5 × 62.6 mm112 parts4LNo license3
STM32QRET 23-24 SRAD Altimeter Module
69.5 × 62.6 mm92 parts4LNo license3
STM32Camera Module
69.5 × 62.6 mm80 parts2LNo license3
STM32QRET 23-24 SRAD Communications Module
69.5 × 62.6 mm69 parts4LNo license3
STM32GPS Module
69.5 × 62.6 mm61 parts4LNo license3
ScrewSwitch
56 × 74 mm16 parts2LNo license3
GPS Antenna Board
50 × 65 mm14 parts2LNo license3
Backplane
69.5 × 119 mm8 parts2LNo license3
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