2 layers70 × 58 mm
2 layers94 × 79 mm
5 - Lizard Car
TRD-B/Lizard1293D printed RC race car with custom electronics
- Size
- 94 × 79 mm
- Copper layers
- 2
- Thickness
- 1.58 mm
- Parts
- 54
- Nets
- 74
- Pads
- 203
- Tracks, vias
- 276, 80
- Pours
- 126
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 22 Dec 2024
- Updated
- 14 Aug 2025
Overview
5 - Lizard Car is an open-source printed circuit board by TRD-B, from the TRD-B/Lizard repository on GitHub, published under the CC-BY-4.0 licence. It is a 2-layer board of 94 × 79 mm with 54 parts on 74 nets, routed with 276 tracks and 80 vias.
It is built around the ESP32-WROOM-32U, PCA9685PW and ADS1115, with the IRLZ44N and IRFP7430PBF among its other parts. Its parts include 17 resistors, 11 capacitors, 10 connectors, 4 ICs and 4 transistors. It belongs with the ESP32 boards of this library.
Main components
5
ESP32-WROOM-32U
SMD,19.2x18mm-40℃~+85℃ -97dBm 2.4GHz 20.5dBm 3V~3.6V Bluetooth4.2 ESP32-DOWD UART、SDIO、SPI、I2C、GPIO、PWM、ADC、DAC、CAN SMD,19.2x18mm WiFi Modules ROHSEspressif SystemsWiFi Modules
PCA9685PW
TSSOP-28-40℃~+85℃ 100kHz~1MHz 16 2.3V~5.5V 25mA 5.5V Built-in PWM TSSOP-28 LED Drivers ROHSNXP SemiconductorsLED DriversADS1115
UncategorisedTexas Instruments
IRLZ44N
TO-22055V 47A N-Channel HEXFET® Power MOSFETInfineon TechnologiesUncategorised
IRFP7430PBF
TO-247AC-3-55℃~+175℃ 1 N-channel 1.46nF 14.24nF 1mΩ@10V 2.2V 366W 404A 40V 460nC TO-247AC-3 MOSFETs ROHSInfineon TechnologiesMOSFETs
README
README.mdLizard is a 3D printed RC race car for onroad usage. The full description of this project is available on Instructables: https://www.instructables.com/Lizard-3D-Printed-RC-Race-Car/
Here, you can find the Gerber files for the PCBs and the sketches required for the ESP32 microcontroller in the remote control and in the car. Also, you can find the codes required to operate a separate data logger alongside the car, including MATLAB functions to evaluate the recorded data graphically. Further, all files for printing are provided as .stl and .stp files.
Also, I added the BOM as an Excel file, and you can find .stp files of the different part groups as well as of the full car assembly, as an aid in assembling the car.
Parts
54| Qty | Value | Footprint | References |
|---|---|---|---|
| 4 | 22µF | Capacitor_SMD:C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | C2, C4, C7, C9 |
| 4 | MountingHole_Pad | MountingHole:MountingHole_3.2mm_M3_Pad_TopBottom | H1, H2, H3, H4 |
| 3 | 1kOhm | Resistor_THT:R_Axial_DIN0309_L9.0mm_D3.2mm_P2.54mm_Vertical | R9, R14, R17 |
| 3 | IRLZ44N | Package_TO_SOT_THT:TO-220-3_Vertical | Q2, Q3, Q4 |
| 2 | 100kOhm | Resistor_THT:R_Axial_DIN0309_L9.0mm_D3.2mm_P2.54mm_Vertical | R1, R5 |
| 2 | 100µF | Capacitor_THT:CP_Radial_D10.0mm_P5.00mm | C3, C10 |
| 2 | 10kOhm | Resistor_THT:R_Axial_DIN0309_L9.0mm_D3.2mm_P12.70mm_Horizontal | R7, R8 |
| 2 | 1Ohm | Resistor_THT:R_Axial_DIN0309_L9.0mm_D3.2mm_P2.54mm_Vertical | R15, R16 |
| 2 | 22kOhm | Resistor_THT:R_Axial_DIN0309_L9.0mm_D3.2mm_P2.54mm_Vertical | R3, R6 |
| 2 | 33kOhm | Resistor_THT:R_Axial_DIN0309_L9.0mm_D3.2mm_P2.54mm_Vertical | R2, R4 |
| 2 | R | Resistor_THT:R_Axial_DIN0309_L9.0mm_D3.2mm_P2.54mm_Vertical | R10, R11 |
| 1 | 0.1µF | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C6 |
| 1 | 1 nF | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C5 |
| 1 | 100nF | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C8 |
| 1 | 10kOhm | Resistor_THT:R_Axial_DIN0309_L9.0mm_D3.2mm_P2.54mm_Vertical | R13 |
| 1 | 10µF | Capacitor_SMD:C_2220_5750Metric_Pad1.97x5.40mm_HandSolder | C1 |
| 1 | 10µF | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C11 |
| 1 | 1N5819 | Diode_THT:D_DO-41_SOD81_P10.16mm_Horizontal | D1 |
| 1 | 220Ohm | Resistor_THT:R_Axial_DIN0309_L9.0mm_D3.2mm_P12.70mm_Horizontal | R12 |
| 1 | 2604-3104 | customfootprints:CONN4_2604-3104_WAG | J1 |
| 1 | ACS712xLCTR-30A | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U2 |
| 1 | ADS1115 | customfootprints:ADS1115 | IC1 |
| 1 | ESP32-WROOM-32U | customfootprints:NodeMCU-ESP32 | U1 |
| 1 | Engine | Connector_Molex:Molex_SL_171971-0003_1x03_P2.54mm_Vertical | J5 |
| 1 | Fan | Connector_Molex:Molex_SL_171971-0002_1x02_P2.54mm_Vertical | J10 |
| 1 | Front light | Connector_Molex:Molex_SL_171971-0002_1x02_P2.54mm_Vertical | J6 |
| 1 | Fuse 30A | customfootprints:iMAXX_H7810 | F1 |
| 1 | Gaptec LC78_03_2.0 | customfootprints:LC78_05_2.0 | DC/DC1 |
| 1 | Gaptec LC78_05_2.0 | customfootprints:LC78_05_2.0 | DC/DC2 |
| 1 | IRFP7430PBF | customfootprints:TO247 vertical MOSFET | Q1 |
| 1 | NTC1 | Connector_Molex:Molex_SL_171971-0002_1x02_P2.54mm_Vertical | J8 |
| 1 | NTC2 | Connector_Molex:Molex_SL_171971-0002_1x02_P2.54mm_Vertical | J9 |
| 1 | Optical encoder | Connector_Molex:Molex_SL_171971-0003_1x03_P2.54mm_Vertical | J3 |
| 1 | PCA9685PW | Package_SO:TSSOP-28_4.4x9.7mm_P0.65mm | U3 |
| 1 | PWR Switch | Connector_Molex:Molex_SL_171971-0002_1x02_P2.54mm_Vertical | J2 |
| 1 | Rear light | Connector_Molex:Molex_SL_171971-0002_1x02_P2.54mm_Vertical | J7 |
| 1 | Servo | Connector_Molex:Molex_SL_171971-0003_1x03_P2.54mm_Vertical | J4 |
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Questions
How big is the 5 - Lizard Car PCB?
It measures 94 × 79 mm and has 2 copper layers, 1.58 mm thick.
What parts does the 5 - Lizard Car use?
54 parts, built around the ESP32-WROOM-32U, PCA9685PW, ADS1115 and IRLZ44N. 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 5 - Lizard Car KiCad files?
From the TRD-B/Lizard repository on GitHub, at the commit this page was made from: the board is Car PCB/5 - Lizard_Car.kicad_pcb and its schematic Car PCB/5 - Lizard_Car.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the 5 - Lizard Car design in my own project?
Its repository publishes it under the CC-BY-4.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).