
STM32F103C8T6 2 layer design (with optimization)
Ferid10/STM32F103C8T6-design
my pcb design where i made a stm 32 board with temprature and pressure sensor using both spi and i2c communication

The Zenith Development Board was developed to serve as a first project for the new members of the group.
Zenith Development Board is an open-source printed circuit board by zenitheesc, from the zenitheesc/Zenith-Development-Board repository on GitHub, published under the MIT licence. It is a 2-layer board of 50 × 63 mm with 69 parts on 71 nets, routed with 679 tracks and 114 vias.
It is built around the STM32F103C8T6, BMP280 and MPU-6050, with the USBLC6-2P6, BAS16GWX and DMG1012T among its other parts. Its parts include 26 resistors, 17 capacitors, 7 diodes, 6 connectors and 5 ICs. It belongs with the microcontroller boards boards and the STM32 boards of this library.
Development board based on the STM32F103C8T6 developed to introduce the group members to circuits similar to those that can be used in the projects, including light, acceleration, rotation, pressure and temperature sensors, as well as actuators such as Mosfets, Relays and Leds.


| Component | Amount | Description |
|---|---|---|
| STM32F103C8T6 | 1 | Microcontroller |
| Crystal | 1 | 16MHz |
| MPU-6050 | 1 | Accelerometer and Gyroscope |
| BMP280 | 1 | Pressure and temperature sensor |
| LDR | 1 | Light Dependent Resistor |
| RGB-LED | 1 | Led SMD |
| Button | 2 | Push button |
| ESD suppressor | 2 | 652-CGA0603MLC-12E |
| Micro USB | 1 | Micro USB connector |
| ESD Protection | 1 | USBLC6-4SC6Y |
| Linear regulator | 1 | LD1117S33TR |
| Rele | 1 | G5V-1-DC5 |
| Mosfet | 1 | DMG1012T-7 |
| Qty | Value | Footprint | References |
|---|---|---|---|
| 5 | 0.1uF | Capacitor_SMD:C_0805_2012Metric | C3, C11, C13, C20, C21 |
| 5 | 4.7K | Resistor_SMD:R_0805_2012Metric | R10, R11, R12, R18, R19 |
| 4 | 100n | Capacitor_SMD:C_0805_2012Metric | C5, C7, C8, C9 |
| 4 | 10K | Resistor_SMD:R_0805_2012Metric | R4, R16, R17, R26 |
| 4 | 22 | Resistor_SMD:R_0805_2012Metric | R6, R7, R14, R15 |
| 4 | 330 | Resistor_SMD:R_0805_2012Metric | R2, R5, R9, R24 |
| 3 | 100 | Resistor_SMD:R_0805_2012Metric | R8, R22, R23 |
| 3 | SW_Push | Button_Switch_SMD:SW_SPST_TL3305A | SW1, SW2, SW3 |
| 3 | TVS | Diode_SMD:D_0603_1608Metric | D3, D4, D7 |
| 2 | 220 | Resistor_SMD:R_0805_2012Metric | R20, R21 |
| 2 | 30p | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C14, C15 |
| 2 | LED_Small | LED_SMD:LED_0805_2012Metric | D1, D5 |
| 1 | 0 | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R13 |
| 1 | 0.1uF | Capacitor_SMD:C_1206_3216Metric | C16 |
| 1 | 1.5K | Resistor_SMD:R_0805_2012Metric | R1 |
| 1 | 100nF | Capacitor_SMD:C_1206_3216Metric | C1 |
| 1 | 10nF | Capacitor_SMD:C_0805_2012Metric | C10 |
| 1 | 10uF | Capacitor_SMD:C_1206_3216Metric | C2 |
| 1 | 1K | Resistor_SMD:R_0805_2012Metric | R25 |
| 1 | 2.2nF | Capacitor_SMD:C_0805_2012Metric | C17 |
| 1 | 4u7 | Capacitor_SMD:C_0805_2012Metric | C4 |
| 1 | BAS16GWX | Diode_SMD:D_SOD-123 | D6 |
| 1 | BMP280 | Package_LGA:Bosch_LGA-8_2x2.5mm_P0.65mm_ClockwisePinNumbering | U3 |
| 1 | Conn_01x04_Male | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | J4 |
| 1 | Conn_01x10_Female | Connector_PinSocket_2.54mm:PinSocket_1x10_P2.54mm_Vertical | J2 |
| 1 | Conn_01x12_Female | Connector_PinSocket_2.54mm:PinSocket_1x12_P2.54mm_Vertical | J7 |
| 1 | Conn_02x03_Odd_Even | Connector_PinHeader_2.54mm:PinHeader_2x03_P2.54mm_Vertical | J5 |
| 1 | Crystal_GND24 | Crystal:Crystal_SMD_SeikoEpson_FA238-4Pin_3.2x2.5mm | Y1 |
| 1 | DMG1012T | Package_TO_SOT_SMD:SOT-523 | Q1 |
| 1 | G5V-1 | Relay_THT:Relay_SPDT_Omron_G5V-1 | K1 |
| 1 | LD1117S33TR_SOT223 | Package_TO_SOT_SMD:SOT-223-3_TabPin2 | U5 |
| 1 | LDR07 | OptoDevice:R_LDR_5.1x4.3mm_P3.4mm_Vertical | R3 |
| 1 | LED_RGB | LED_SMD:LED_RGB_5050-6 | D2 |
| 1 | LOGO | LogosZenith:Logo_19,4mm | G*** |
| 1 | LOGO | LogosZenith:Logo_29,1mm | G*** |
| 1 | MPU-6050 | Sensor_Motion:InvenSense_QFN-24_4x4mm_P0.5mm | U2 |
| 1 | STM32F103C8T6 | Package_QFP:LQFP-48_7x7mm_P0.5mm | U4 |
| 1 | Screw_Terminal_01x03 | TerminalBlock_Phoenix:TerminalBlock_Phoenix_PT-1,5-3-5.0-H_1x03_P5.00mm_Horizontal | J3 |
| 1 | USBLC6-2P6 | digikey-footprints:SOT23-6L | U1 |
| 1 | USB_B_Micro | Connector_USB:USB_Micro-B_Amphenol_10103594-0001LF_Horizontal | J1 |
It measures 50 × 63 mm and has 2 copper layers, 1.6 mm thick.
69 parts, built around the STM32F103C8T6, BMP280, MPU-6050 and USBLC6-2P6. 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.
From the zenitheesc/Zenith-Development-Board repository on GitHub, at the commit this page was made from: the board is Model/Hardware/Zenith_Development_Board.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Its repository publishes it under the MIT licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).

Ferid10/STM32F103C8T6-design
my pcb design where i made a stm 32 board with temprature and pressure sensor using both spi and i2c communication

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