2 layers140.5 × 30 mm
Type e
google/mozc-devices
Circuit diagrams and firmware source code for Gboard DIY keyboards
16 parts3kApache-2.0
2 layers94 × 92 mm
Liros
Solus-QE/LirosWelcome to LiRover! This hardware for Hackclub's Stardance event will be centered around a hardware initiative by 4 high schoolers.
- Size
- 94 × 92 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 16
- Nets
- 63
- Pads
- 161
- Tracks, vias
- 193, 11
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 13 Jun 2026
- Updated
- 12 Jul 2026
Overview
Liros is an open-source printed circuit board by Solus-QE, from the Solus-QE/Liros repository on GitHub, published under the MIT licence. It is a 2-layer board of 94 × 92 mm with 16 parts on 63 nets, routed with 193 tracks and 11 vias.
Its parts include 4 capacitors, 1 connector and 1 fuse. It belongs with the RP2040 boards of this library.
README
README.mdLiRover, Curated by Alex, Anish, Om, Yash
Overview
Welcome to LiRover! This hardware for Hackclub's Stardance event will be centered around a hardware initiative by 4 high schoolers.
After a failed rocket idea, we settled on an RC car with a LiDAR sensor attached that can create a comprehensive map of its surroundings. This is done from scratch by creating a 3D printed chassis, custom PCB, and an embedded control system. This project is controlled through a Raspberry Pi Zero 2 W and a Raspberry Pi Pico W. The robot will combine LiDAR sensing, an IMU (which includes an accelerometer for linear acceleration, gyroscope for measuring angular rotation, and magnetometer for magnetic field and acting as a compass), motor drivers, and wheel odometry to estimate its position and generate a real-time 2D "minimap" of its surrounding area. To control it, we implemented a Bluetooth module for SLAM development (Simultaneous Localization and Mapping, essentially enabling the robot to construct a map and track its position).
Features
- Custom CAD and 3D-printed chassis for the RC car
- Custom PCB with onboard power regulation, fusing, and dedicated LiDAR/motor connectors
- Bluetooth remote control
- Real time LiDAR mapping
- IMU-based tracking
- Accelerometer for linear acceleration
- 3-plane gyroscope for angular rotation
- Magnetometer for magnetic field detection
Hardware
Computing
- Raspberry Pi Zero 2 W
- Raspberry Pi Pico W
Sensors
- 2D/3D Lidar
- IMU
- Wheel Encoders (??)
Electronics
- Custom PCB (Pico W + Pi Zero 2 W header, LiDAR connector, screw terminals for motor/battery)
- Motor driver
- Lithium Battery Pack
- Voltage regulation circuitry
- Bluetooth module
- Onboard fuse protection
Mechanical
- Fully custom 3D-printed chassis
- Custom motor mounts
- 3D-printed power switch housing
Software
Raspberry Pi Zero 2 W
- Sensor fusion
- Mapping
- Localization
- Bluetooth comms
- Dashboard server
- Robot logic / Robot comms
Raspberry Pi Pico W (Communicates with the Raspberry Pi Zero 2 W)
- Sensor reading
- Motor Pulse Width Modulation (PWM)
- Encoder Feedback
Project Goals
- Design and develop a complete robotics platform
- Develop an embedded control system
- Generate a live 2D map using LiDAR and motion estimation (Main goal!!!)
Parts List
PARTS LIST IS IN BOM.csv
Repository Structure
Coming Soon!!
Devlog
Check out JOURNAL.md for build progress and updates.
License
This project is licensed with the MIT License.
Parts
16| Qty | Value | Footprint | References |
|---|---|---|---|
| 4 | MountingHole_3.2mm_M3 | MountingHole:MountingHole_3.2mm_M3 | MH1, MH2, MH3, MH4 |
| 2 | 100nF | Capacitor_THT:C_Disc_D7.5mm_W5.0mm_P5.00mm | C2, C6 |
| 2 | Conn_01x04 | Connector_PinSocket_2.54mm:PinSocket_1x04_P2.54mm_Vertical | J_BARO1, J_IMU1 |
| 1 | 10uF | Capacitor_THT:CP_Radial_D6.3mm_P2.50mm | C5 |
| 1 | 220uF | Capacitor_THT:CP_Radial_D6.3mm_P2.50mm | C1 |
| 1 | 2A | Fuse:Fuse_1206_3216Metric | F1 |
| 1 | Conn_01x06 | Connector_PinSocket_2.54mm:PinSocket_1x06_P2.54mm_Vertical | J_SD1 |
| 1 | Conn_02x20_Odd_Even | Connector_PinSocket_2.54mm:PinSocket_2x20_P2.54mm_Vertical | J_PI1 |
| 1 | RaspberryPi_Pico_W | Module:RaspberryPi_Pico_W_SMD_HandSolder | A1 |
| 1 | Screw_Terminal_01x02 | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | J1 |
| 1 | Screw_Terminal_01x04 | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | J_LIDAR1 |
Questions
How big is the Liros PCB?
It measures 94 × 92 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Liros use?
16 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 Liros KiCad files?
From the Solus-QE/Liros repository on GitHub, at the commit this page was made from: the board is pcb/pcb.kicad_pcb and its schematic pcb/pcb.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Liros design in my own project?
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).
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