2 layers159.5 × 30 mm
Type f
google/mozc-devices
Circuit diagrams and firmware source code for Gboard DIY keyboards
25 parts3kApache-2.0
2 layers53 × 22.5 mm
Projet
bocarknt/Conception_PCBCarte PCB personnalisée conçue pour un nœud IoT embarqué basé sur le microcontrôleur STM32F031K6T7. Réalisée avec KiCad dans le cadre d'un cours de conception de PCB pour systèmes embarqués.
- Size
- 53 × 22.5 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 25
- Nets
- 33
- Pads
- 89
- Tracks, vias
- 155, 10
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 3 Jun 2026
- Updated
- 3 Jun 2026
Overview
Projet is an open-source printed circuit board by bocarknt, from the bocarknt/Conception_PCB repository on GitHub. It is a 2-layer board of 53 × 22.5 mm with 25 parts on 33 nets, routed with 155 tracks and 10 vias.
Its parts include 7 capacitors, 7 resistors, 4 connectors, 2 ICs and 2 diodes. It belongs with the STM32 boards of this library.
README
README.mdConception PCB – STM32F031K6T7 Système Embarqué
Carte PCB personnalisée conçue pour un nœud IoT embarqué basé sur le microcontrôleur STM32F031K6T7. Réalisée avec KiCad dans le cadre d'un cours de conception de PCB pour systèmes embarqués.
Vue d'ensemble
| Paramètre | Valeur |
|---|---|
| Microcontrôleur | STM32F031K6T7 |
| Dimensions | 53 × 22,5 mm |
| Alimentation | 12V / 5V |
| Tension régulée | 3,3V (régulateur embarqué) |
| Cristal | 8 MHz |
Connecteurs
| Connecteur | Type | Fonction |
|---|---|---|
| J1 | Grove (4 broches) | Capteur – I2C |
| J2 | Header mâle | Communication – UART (FT232) |
| J3 | Header mâle | Programmateur SWD (ST-Link CN4) |
| J4 | Borne à vis | Alimentation (12V / 5V) |
Capteur – SHT31
Capteur de température et d'humidité compatible Grove.
| Paramètre | Valeur |
|---|---|
| Interface | I2C |
| Alimentation | 3,3V |
| Plage de température | -40°C à +125°C |
| Plage d'humidité | 0–100 %HR |
Communication – FT232 (USB-UART)
Le module basé sur le FT232R se connecte à J2 via UART et fournit une interface série USB vers un ordinateur hôte.
| Broche MCU | Signal | Broche J2 |
|---|---|---|
| PA9 (TX) | → RX | FT232 RX |
| PA10 (RX) | ← TX | FT232 TX |
| — | GND | GND |
| — | VCC (3,3V) | VCC |
Programmation – ST-Link via J3 (SWD)
| Broche J3 | Signal | Description |
|---|---|---|
| 1 | VDD_TARGET | 3,3V de la carte |
| 2 | SWCLK | Horloge SWD |
| 3 | GND | Masse |
| 4 | SWDIO | Données SWD |
| 5 | NRST | Réinitialisation |
| 6 | SWO | Réservé |
Outils utilisés : STM32CubeIDE + STM32 ST-Link Utility
Commande de flashage :
-c SWD -p ${project_loc}\Debug\${project_name}.hex -v -RstComposants embarqués
| Composant | Fonction |
|---|---|
| LED Verte | Sortie numérique (GPIO) |
| RST | Bouton poussoir – Réinitialisation |
| Y1 | Cristal 8 MHz |
| U2 | Régulateur de tension 3,3V |
Structure du dépôt
├── README.md
├── kicad/
│ ├── projet.kicad_sch # Schématique
│ └── projet.kicad_pcb # Routage PCB
└── media/
├── pcb_top.png # Photo vue dessus
├── pcb_bottom.png # Photo vue dessous
├── carte_pcb.jpeg #photo de la carte avec les composants soudés
├── schema.png #capture du Schématique
├── routage.png # capture du routage
└── demo.mp4 # Vidéo de démonstrationOutils
- KiCad – Conception schématique et PCB
- STM32CubeIDE – Développement firmware
- STM32 ST-Link Utility – Flashage
Références
- Fiche technique SHT31
- Fiche technique FT232R – FTDI
- Fiche technique STM32F031K6 – ST
- Connecteur SWD CN4 Nucleo – ST UM1724
Photos de la carte
Démonstration
https://github.com/bocarknt/Conception_PCB/blob/main/media/demo.mp4
Parts
25| Qty | Value | Footprint | References |
|---|---|---|---|
| 5 | 10k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R2, R3, R5, R6, R7 |
| 2 | 0.1u | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C4, C8 |
| 2 | 100n | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C1, C2 |
| 2 | 22p | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C5, C6 |
| 2 | Conn_01x04 | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | J1, J4 |
| 1 | 330 | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R4 |
| 1 | 4.7u | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C3 |
| 1 | 60 | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R1 |
| 1 | AP2127N-3.3 | Package_TO_SOT_SMD:SOT-23 | U2 |
| 1 | Conn_01x02 | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | J3 |
| 1 | Conn_01x04 | Connector:NS-Tech_Grove_1x04_P2mm_Vertical | J2 |
| 1 | Crystal | Crystal:Crystal_HC49-4H_Vertical | Y1 |
| 1 | LED | LED_THT:LED_D3.0mm | D3 |
| 1 | STM32F031K6Tx | Package_QFP:LQFP-32_7x7mm_P0.8mm | U1 |
| 1 | SW_Push | Button_Switch_THT:SW_PUSH_6mm_H5mm | SW1 |
| 1 | Thermistor_NTC | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | TH1 |
| 1 | ~ | Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal | D1 |
Questions
How big is the Projet PCB?
It measures 53 × 22.5 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Projet use?
25 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 Projet KiCad files?
From the bocarknt/Conception_PCB repository on GitHub, at the commit this page was made from: the board is kicad/projet.kicad_pcb and its schematic kicad/projet.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Projet design in my own project?
Its repository states no licence, so its author keeps all rights: ask bocarknt before reusing the design.
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