2 layers100 × 120 mm
Micromouse pcb
MukeshSethy/micromouse-runner
This is my repo for the first version of full size micromouse development.
135 parts
4 layers100 × 120 mm
Micromouse pcb
MukeshSethy/micromouse-runnerThis is my repo for the first version of full size micromouse development.
- Size
- 100 × 120 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 184
- Nets
- 149
- Pads
- 610
- Tracks, vias
- 2,129, 482
- Pours
- 11
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 13 Jul 2026
- Updated
- 7 Sep 2026
Overview
Micromouse pcb is an open-source printed circuit board by MukeshSethy, from the MukeshSethy/micromouse-runner repository on GitHub. It is a 4-layer board of 100 × 120 mm with 184 parts on 149 nets, routed with 2,129 tracks and 482 vias.
It is built around the ESP32-S3-WROOM-1-N8R2, TB6612FNG,C,8,EL and BNO055, with the CD74HC4067M96, USBLC6-2SC6 and BSS138LT1G among its other parts. Its parts include 75 resistors, 26 transistors, 23 capacitors, 21 diodes and 7 ICs. It belongs with the ESP32 boards of this library.
Main components
12
ESP32-S3-WROOM-1-N8R2
SMD,25.5x18mm-40℃~+85℃ -98.2dBm 2.4GHz 20.5dBm 355mA 3V~3.6V 97mA Bluetooth5.0 ESP32-S3 Chip On-board PCB Antenna UART、SPI、I2C、I2S、USB SMD,25.5x18mm WiFi Modules ROHSEspressif SystemsWiFi Modules
TB6612FNG,C,8,EL
-- Motor Driver Boards, Modules ROHSWaveshareMotor Driver Boards, Modules
BNO055
LGA-28(3.8x5.2)-40℃~+85℃ 2.4V~3.6V 40uA I2C、UART IMU X,Y,Z X,Y,Z ±16g ±2000dps LGA-28(3.8x5.2) Accelerometers ROHSBosch SensortecAccelerometers
CD74HC4067M96
SOIC-24-300mil-55℃~+125℃ 15ns 2V~6V 70Ω 83ns 83ns 89MHz SOIC-24-300mil Analog Switches, Multiplexers ROHSTexas InstrumentsAnalog Switches, Multiplexers
USBLC6-2SC6
SOT-23-60.35pF、0.8pF 100nA 150W@8/20us 15V 2 5V 6A@8/20us 6V ESD SOT-23-6 ESD and Surge Protection (TVS/ESD) ROHSUMWESD And Surge Protection (TVS/ESD)
BSS138LT1G
SOT-23-55℃~+150℃ 1 N-channel 200mA 225mW 5.6Ω@2.75V 500mV 50V 50pF 5pF SOT-23 MOSFETs ROHSonsemiMOSFETs
CL21B104KBCNNNC
0805100nF 50V X7R ±10% 0805 Multilayer Ceramic Capacitors MLCC - SMD/SMT ROHSSamsung Electro-MechanicsMultilayer Ceramic Capacitors MLCC - SMD/SMT
RC0805FR-0710KL
UncategorisedUnknown maker
APT1608SURCK
0603-40℃~+85℃ 1.95V 120° 20mA 230mcd 630nm 645nm 75mW Discrete Diode Red Water Clear 0603 LED Indication - Discrete ROHSKingbrightLED Indication - Discrete
TCRT5000
DIP-4-25℃~+85℃ 0.4V 1.25V 100mA 15mm 70V 950nm Phototransistor DIP-4 Reflective Optical Interrupters ROHSVishay IntertechnologyReflective Optical InterruptersBSS84LT1G
SOT-23-55℃~+150℃ 1 P-Channel 10Ω@5V 130mA 17pF 2.2nC@10V 225mW 2V 36pF 50V 6.5pF P-Channel SOT-23 MOSFETs ROHSonsemiMOSFETs
IR333-A
插件,D=5mm-40℃~+85℃ 1.2V 100mA 150mW 5V 7.8mW/sr@IF=20mA 940nm 插件,D=5mm Infrared LED Emitters ROHSEverlight ElectronicsInfrared LED Emitters
README
pcb/JLCPCB_2layers/design/README.mdJLCPCB 2-layer micromouse — design (work in progress)
Derived from the 4-layer board, re-worked for JLCPCB full turnkey assembly:
- 2 layers (not 4)
- line sensors removed (LS1–LS8 + their indicator LEDs / dependencies)
- only JLC-assemblable parts (no hand-solder step)
Status: under construction.
Parts
184| Qty | Value | Footprint | References |
|---|---|---|---|
| 16 | 1k | Resistor_SMD:R_0805_2012Metric | R41, R42, R43, R44, R45, R46, R47, R48, R49, R50, R51, R52, R53, R54, R57, R58 |
| 14 | 47k | Resistor_SMD:R_0805_2012Metric | R13, R15, R17, R19, R21, R23, R25, R27, R29, R31, R33, R35, R37, R39 |
| 12 | BSS138 (real part; Q_NMOS_GSD base symbol used so ERC checks pins) | Package_TO_SOT_SMD:SOT-23 | Q16, Q17, Q18, Q19, Q20, Q21, Q22, Q23, Q24, Q25, Q26, Q27 |
| 11 | 100nF | Capacitor_SMD:C_0805_2012Metric | C2, C3, C6, C8, C12, C13, C14, C15, C19, C20, C23 |
| 11 | 10k | Resistor_SMD:R_0805_2012Metric | R6, R7, R8, R9, R10, R11, R55, R65, R67, R79, R80 |
| 10 | 100k | Resistor_SMD:R_0805_2012Metric | R1, R2, R61, R62, R63, R64, R69, R73, R75, R76 |
| 8 | 120 | Resistor_SMD:R_0805_2012Metric | R26, R28, R30, R32, R34, R36, R38, R40 |
| 8 | Indicator LED 0603 super-red AlInGaP, high-efficiency bin REQUIRED at 1.4mA (e.g. Kingbright APT1608SURCK; LD271 base symbol for ERC) | LED_SMD:LED_0603_1608Metric | D15, D16, D17, D18, D19, D20, D21, D22 |
| 8 | TCRT5000 (reflective sensor, filtered PT; PC817 base symbol so ERC checks pins) | n20:TCRT5000 | LS1, LS2, LS3, LS4, LS5, LS6, LS7, LS8 |
| 6 | 33 | Resistor_SMD:R_0805_2012Metric | R14, R16, R18, R20, R22, R24 |
| 6 | BSS84 (PMOS indicator driver; Q_PMOS base symbol) | Package_TO_SOT_SMD:SOT-23 | Q28, Q29, Q30, Q31, Q32, Q33 |
| 6 | IR333-A (Everlight 5mm 940nm 20deg; LD271 base symbol; TSAL6400 is lifecycle-Obsolete at Lion) | LED_THT:LED_D5.0mm_IRGrey | D1, D2, D3, D4, D5, D6 |
| 6 | Indicator LED 0603 super-red AlInGaP, high-eff bin (e.g. APT1608SURCK) | LED_SMD:LED_0603_1608Metric | D23, D24, D25, D26, D27, D28 |
| 6 | PT334-6B (5mm filtered PT; LONG LEAD = EMITTER; SFH309 base symbol so ERC checks pins) | LED_THT:LED_D5.0mm_IRBlack | Q2, Q3, Q4, Q5, Q6, Q7 |
| 5 | MountingHole_NPTH | H1, H2, H3, H4, H5 | |
| 4 | 10uF/25V | Capacitor_SMD:C_1210_3225Metric | C1, C4, C11, C18 |
| 2 | 10uF | Capacitor_SMD:C_0805_2012Metric | C10, C24 |
| 2 | 22uF | Capacitor_SMD:C_0805_2012Metric | C5, C7 |
| 2 | 22uF/25V | Capacitor_SMD:C_1210_3225Metric | C16, C17 |
| 2 | 4.7k | Resistor_SMD:R_0805_2012Metric | R77, R78 |
| 2 | 4.7uH | n20:L_Bourns_SRP4020TA | L1, L2 |
| 2 | 5.1k | Resistor_SMD:R_0805_2012Metric | R12, R56 |
| 2 | N20_Motor_Encoder | N20_Motor_Encoder | MOT1, MOT2 |
| 1 | 110k | Resistor_SMD:R_0805_2012Metric | R71 |
| 1 | 11k | Resistor_SMD:R_0805_2012Metric | R74 |
| 1 | 15k | Resistor_SMD:R_0805_2012Metric | R68 |
| 1 | 1N4148W (flyback clamp across the buzzer coil) | Diode_SMD:D_SOD-123 | D29 |
| 1 | 1uF | Capacitor_SMD:C_0805_2012Metric | C9 |
| 1 | 2.6A/16V PPTC | Fuse:Fuse_1812_4532Metric | F1 |
| 1 | 220 | Resistor_SMD:R_0805_2012Metric | R81 |
| 1 | 220k | Resistor_SMD:R_0805_2012Metric | R70 |
| 1 | 220uF/16V | Capacitor_SMD:CP_Elec_6.3x7.7 | C30 |
| 1 | 39k | Resistor_SMD:R_0805_2012Metric | R3 |
| 1 | AP63203WU-7 (fixed 3.3V 2A buck; AP63200WU base symbol so ERC checks pins) | Package_TO_SOT_SMD:TSOT-23-6 | U1 |
| 1 | BALANCE_2S | Connector_JST:JST_XH_B3B-XH-A_1x03_P2.50mm_Vertical | J9 |
| 1 | BATT_IN_2S | Connector_JST:JST_XH_B2B-XH-A_1x02_P2.50mm_Vertical | J1 |
| 1 | BATT_IN_XT60 (parallel option -- ONE PACK ONLY) | Connector_AMASS:AMASS_XT60-M_1x02_P7.20mm_Vertical | J10 |
| 1 | BNO055 (9-axis IMU + fusion; 3.3V native; I2C 0x28) | n20:BNO055 | U8 |
| 1 | BTN_A (start / BOOT) | Button_Switch_THT:SW_PUSH_6mm | SW1 |
| 1 | BTN_B | Button_Switch_THT:SW_PUSH_6mm | SW3 |
| 1 | BTN_C | Button_Switch_THT:SW_PUSH_6mm | SW4 |
| 1 | CD74HC4067M | Package_SO:SOIC-24W_7.5x15.4mm_P1.27mm | U4 |
| 1 | CMT-8504-100-SMT (magnetic transducer 8.5mm, 15R coil, 4kHz; pads 3/4 are mechanical dummies) | Buzzer_Beeper:MagneticBuzzer_CUI_CMT-8504-100-SMT | BZ1 |
| 1 | ESP32-S3-WROOM-1-N8R2 (quad PSRAM: IO35-37 usable; octal -R8 would lose them) | RF_Module:ESP32-S3-WROOM-1 | U3 |
| 1 | JTAG_1x6 (3V3,TMS,TCK,TDO,TDI,GND) | Connector_PinHeader_2.54mm:PinHeader_1x06_P2.54mm_Vertical | J8 |
| 1 | MMBT2222A (buzzer low-side driver; Q_NPN_BEC base symbol so ERC checks pins) | Package_TO_SOT_SMD:SOT-23 | Q34 |
| 1 | MOTOR_A_N20_ENCODER | Connector_JST:JST_ZH_B6B-ZR_1x06_P1.50mm_Vertical | J5 |
| 1 | MOTOR_B_N20_ENCODER | Connector_JST:JST_ZH_B6B-ZR_1x06_P1.50mm_Vertical | J6 |
| 1 | PWR ALL (PCM12SMTR slide; slide-to-GND = OFF) | Button_Switch_SMD:SW_SPDT_PCM12 | SW5 |
| 1 | PWR MOTORS (PCM12SMTR slide; slide-to-GND = motors OFF) | Button_Switch_SMD:SW_SPDT_PCM12 | SW6 |
| 1 | Q_PMOS reverse guard (DMP3098L-7: Vgs +/-20V, 2S-safe) | Package_TO_SOT_SMD:SOT-23 | Q1 |
| 1 | RESET | Button_Switch_THT:SW_PUSH_6mm | SW2 |
| 1 | TB6612FNG | Package_SO:SSOP-24_5.3x8.2mm_P0.65mm | U2 |
| 1 | TPS54302DDCR (6.0V/3A motor buck; FB=100k/11k) | Package_TO_SOT_SMD:SOT-23-6 | U7 |
| 1 | USB-C rear (GCT USB4105; VBUS unused -- battery powers the board) | Connector_USB:USB_C_Receptacle_GCT_USB4105-xx-A_16P_TopMnt_Horizontal | J7 |
| 1 | USBLC6-2SC6 (SOT-23-6; 2P6 base symbol so ERC checks pins) | Package_TO_SOT_SMD:SOT-23-6 | U6 |
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Questions
How big is the Micromouse pcb PCB?
It measures 100 × 120 mm and has 4 copper layers, 1.6 mm thick.
What parts does the Micromouse pcb use?
184 parts, built around the ESP32-S3-WROOM-1-N8R2, TB6612FNG,C,8,EL, BNO055 and CD74HC4067M96. 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 Micromouse pcb KiCad files?
From the MukeshSethy/micromouse-runner repository on GitHub, at the commit this page was made from: the board is pcb/LionCircuit_4layers/design/micromouse-pcb.kicad_pcb and its schematic pcb/JLCPCB_2layers/design/micromouse-pcb.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Micromouse pcb design in my own project?
Its repository states no licence, so its author keeps all rights: ask MukeshSethy before reusing the design.