4 layers85 × 60 mm
4 layers70 × 70 mm
- Size
- 70 × 70 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 96
- Nets
- 125
- Pads
- 466
- Tracks, vias
- 682, 173
- Pours
- 13
- Routed
- Yes
- KiCad
- KiCad 6 (file 20211014)
- Created
- 11 Feb 2022
- Updated
- 6 Nov 2026
Overview
MBR is an open-source printed circuit board by sceric, from the sceric/ElectronicTheory repository on GitHub. It is a 4-layer board of 70 × 70 mm with 96 parts on 125 nets, routed with 682 tracks and 173 vias.
It is built around the STM32F103C8T6, HC-05 and DRV8825PWP, with the AMS1084CM, AMS1117-3.3 and MPU-6050 among its other parts. Its parts include 32 capacitors, 22 resistors, 8 connectors, 7 ICs and 7 diodes. It belongs with the STM32 boards of this library.
Main components
7
STM32F103C8T6
LQFP-48(7x7)-40℃~+85℃ 12bit 20KB 2V~3.6V 32 Bit 37 64KB 72MHz ARM Cortex-M3 Built-in FLASH LQFP-48(7x7) Microcontrollers (MCU/MPU/SOC) ROHSSTMicroelectronicsMicrocontrollers (MCU/MPU/SOC)
HC-05
Bluetooth to Serial Port ModuleGENERICUncategorised
DRV8825PWP
HTSSOP-28-EP-40℃~+85℃ 2 2.5A 200mΩ 32 8.2V~45V Bipolar Driver STEP/DIR Yes HTSSOP-28-EP Stepper Motor Driver ROHSTexas InstrumentsStepper Motor Driver
AMS1084CM
TO-263-3-40℃~+125℃ 0.003%Vout 1 1.5V@(5A) 15V 5A 5mA 75dB@(120Hz) Adjustable Over Current Protection、Short Circuit Protection、Thermal shutdown Positive TO-263-3 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSAdvanced Monolithic SystemsVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
AMS1117-3.3
SOT-223-40℃~+125℃ 0.003%Vout 1 1.1V@(800mA) 15V 1A 3.3V 5mA 72dB@(120Hz) Fixed Over Current Protection、Short Circuit Protection、Thermal shutdown Positive SOT-223 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSAdvanced Monolithic SystemsVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
MPU-6050
QFN-24-EP(4x4)-40℃~+85℃ 16bit 1KB 2.375V~3.46V 5uA Accelerometer Gyroscope I2C X,Y,Z X,Y,Z ±16g ±2000dps QFN-24-EP(4x4) Accelerometers ROHSTDK InvenSenseAccelerometers
AO3401A
SOT-231 P-Channel 14nC@10V 30V 47mΩ@10V、60mΩ@4.5V、85mΩ@2.5V 4A 55pF 645pF 80pF 900mV SOT-23 MOSFETs ROHSAlpha & Omega SemiconductorMOSFETs
README
Projects/Digital_Receiver/README.mdDigital_Receiver
Wireless receiver based on AS01-SPIPX (NRF)
Parts
96| Qty | Value | Footprint | References |
|---|---|---|---|
| 16 | 100nF | Capacitor_SMD:C_0603_1608Metric | C2, C3, C4, C5, C6, C13, C14, C16, C22, C23, C24, C26, C28, C29, C30, C32 |
| 6 | 1k | Resistor_SMD:R_0603_1608Metric | R2, R3, R8, R10, R11, R12 |
| 6 | RED | LED_SMD:LED_0603_1608Metric | D1, D2, D3, D4, D5, D6 |
| 4 | 0.25R | Resistor_SMD:R_0805_2012Metric | R18, R19, R20, R21 |
| 4 | 10uF | Capacitor_SMD:C_0805_2012Metric | C1, C17, C18, C19 |
| 4 | 4.7k | Resistor_SMD:R_0603_1608Metric | R4, R5, R6, R9 |
| 4 | MountingHole | MountingHole:MountingHole_3.2mm_M3_Pad_Via | H1, H2, H3, H4 |
| 3 | 10nF | Capacitor_SMD:C_0603_1608Metric | C12, C21, C27 |
| 3 | 10pF | Capacitor_SMD:C_0603_1608Metric | C9, C10, C11 |
| 3 | R_POT | Potentiometer_THT:Potentiometer_Vishay_T73YP_Vertical | RV1, RV2, RV3 |
| 2 | 100k | Potentiometer_SMD:Potentiometer_Bourns_TC33X_Vertical | RV4, RV5 |
| 2 | 100uF | Capacitor_SMD:CP_Elec_8x10 | C25, C31 |
| 2 | 10k | Resistor_SMD:R_0603_1608Metric | R7, R15 |
| 2 | 1M | Resistor_SMD:R_0603_1608Metric | R17, R22 |
| 2 | 22pF | Capacitor_SMD:C_0603_1608Metric | C7, C8 |
| 2 | Conn_01x04 | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | J7, J8 |
| 2 | Conn_01x04 | Connector_JST:JST_EH_B4B-EH-A_1x04_P2.50mm_Vertical | J2, J3 |
| 2 | DRV8825PWP | My_Kicad_library:IC_TPS61196PWPRQ1 | U6, U7 |
| 2 | SW_Push | Button_Switch_SMD:SW_SPST_TL3342 | SW1, SW3 |
| 2 | esd | Diode_SMD:D_0603_1608Metric | TH1, TH2 |
| 1 | 12k | Resistor_SMD:R_0603_1608Metric | R13 |
| 1 | 2.2nF | Capacitor_SMD:C_0603_1608Metric | C15 |
| 1 | 3.3k | Resistor_SMD:R_0603_1608Metric | R14 |
| 1 | 30k | Resistor_SMD:R_0603_1608Metric | R16 |
| 1 | 47uF | Capacitor_SMD:CP_Elec_6.3x5.4 | C20 |
| 1 | 5R | Resistor_SMD:R_0603_1608Metric | R1 |
| 1 | 8Mhz | Crystal:Crystal_SMD_3225-4Pin_3.2x2.5mm | Y1 |
| 1 | AMS1084CM | Package_TO_SOT_SMD:TO-263-3_TabPin4 | U4 |
| 1 | AMS1117-3.3 | Package_TO_SOT_SMD:SOT-223-3_TabPin2 | U5 |
| 1 | AO3401A | Package_TO_SOT_SMD:SOT-23 | Q1 |
| 1 | BOOT_SW | Button_Switch_SMD:SW_SPDT_PCM12 | SW2 |
| 1 | Crystal | Crystal:Crystal_C26-LF_D2.1mm_L6.5mm_Horizontal | Y2 |
| 1 | HC-05 | HC-05:XCVR_HC-05 | U2 |
| 1 | I2C | Connector_JST:JST_EH_B4B-EH-A_1x04_P2.50mm_Vertical | J1 |
| 1 | LOGO | SFA_LOGO:MonsterBot | G*** |
| 1 | LOGO | SFA_LOGO:small_monster_bot | G*** |
| 1 | MPU-6050 | Sensor_Motion:InvenSense_QFN-24_4x4mm_P0.5mm | U3 |
| 1 | SPI | Connector_PinHeader_2.54mm:PinHeader_2x04_P2.54mm_Vertical | J5 |
| 1 | STM32F103C8T6 | Package_QFP:LQFP-48_7x7mm_P0.5mm | U1 |
| 1 | Screw_Terminal_01x02 | TerminalBlock:TerminalBlock_bornier-2_P5.08mm | J4 |
| 1 | T4 | Diode_SMD:D_SOD-123 | D7 |
| 1 | USB_B_Micro | Connector_USB:USB_Micro-B_Molex-105017-0001 | J6 |
| 1 | fuse | Fuse:Fuse_1812_4532Metric | F1 |
Questions
How big is the MBR PCB?
It measures 70 × 70 mm and has 4 copper layers, 1.6 mm thick.
What parts does the MBR use?
96 parts, built around the STM32F103C8T6, HC-05, DRV8825PWP and AMS1084CM. 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 MBR KiCad files?
From the sceric/ElectronicTheory repository on GitHub, at the commit this page was made from: the board is Projects/MBR-Hardware/MBR.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the MBR design in my own project?
Its repository states no licence, so its author keeps all rights: ask sceric before reusing the design.
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