# DFRobot Maqueen Plus V3 > Advanced micro:bit STEM robot with 8x8 matrix laser ranging, 5 line-tracking sensors with intersection recognition, magnetic encoders, PID control, and 6 RGB LEDs. Programmable via MakeCode and MicroPython. ## Quick Facts - **Brand:** DFRobot - **Board Type:** robot - **Price:** ~$69.9 - **Product Readiness:** diy-kit - **CPU:** Nordic nRF52833 (via micro:bit) - **CPU Architecture:** ARM Cortex-M4 - **CPU Cores:** 1 - **RAM:** 128KB - **Flash:** 512KB - **Power:** AA batteries (2.4-3.0V) or 18650 (3.5-4.2V) - **Operating Voltage:** 3.3V - **Antenna:** Built-in PCB antenna ## Connectivity - **Bluetooth:** BLE (via micro:bit) ## Open Source - **Firmware:** No - **Schematics:** No - **PCB Layout:** No ## Compatible Firmware MakeCode, micropython, Mind+ ## Use Cases - robotics - education - stem - line-following ## Components - **TMF8821 Matrix Laser Ranging** (Sensor): Time-of-flight matrix laser ranging sensor with 64-point depth sensing, 20-4000mm range, ±11mm accuracy at close range, 60° FOV, and 60Hz update rate — [Datasheet](https://openhardware.directory/r?to=https%3A%2F%2Fams.com%2Ftmf8820-tmf8821-tmf8828&ref=openhardware.directory&product=dfrobot-maqueen-plus-v3&source=md-export) - **5-Channel Line Tracker** (Sensor): 5-channel line-tracking sensor array with digital and analog output, dedicated calibration button, and built-in recognition for 4 intersection types — [Datasheet](https://openhardware.directory/r?to=https%3A%2F%2Fwiki.dfrobot.com%2FSKU_MBT0050-AA&ref=openhardware.directory&product=dfrobot-maqueen-plus-v3&source=md-export) - **Ambient Light Sensors** (Sensor): Two analog light sensors with 0-1023 data range for ambient light detection — [Datasheet](https://openhardware.directory/r?to=https%3A%2F%2Fwiki.dfrobot.com%2FSKU_MBT0050-AA&ref=openhardware.directory&product=dfrobot-maqueen-plus-v3&source=md-export) - **IR Receiver** (Sensor): Infrared receiver for remote control functionality using standard IR protocols — [Datasheet](https://openhardware.directory/r?to=https%3A%2F%2Fwiki.dfrobot.com%2FSKU_MBT0050-AA&ref=openhardware.directory&product=dfrobot-maqueen-plus-v3&source=md-export) - **N20 Metal Geared Motor** (Motor): Two detachable N20 metal geared motors with independent 5V voltage regulation for reliable drive performance — [Datasheet](https://openhardware.directory/r?to=https%3A%2F%2Fwiki.dfrobot.com%2FSKU_MBT0050-AA&ref=openhardware.directory&product=dfrobot-maqueen-plus-v3&source=md-export) - **Magnetic Induction Encoder** (Encoder): Two magnetic induction encoders with 4-line resolution enabling PID-controlled precise distance and angle management — [Datasheet](https://openhardware.directory/r?to=https%3A%2F%2Fwiki.dfrobot.com%2FSKU_MBT0050-AA&ref=openhardware.directory&product=dfrobot-maqueen-plus-v3&source=md-export) - **WS2812 RGB LEDs** (LED): 4x WS2812 full-spectrum ambient RGB LEDs plus 2x programmable RGB headlights for visual feedback and light effects — [Datasheet](https://openhardware.directory/r?to=https%3A%2F%2Fcdn-shop.adafruit.com%2Fdatasheets%2FWS2812.pdf&ref=openhardware.directory&product=dfrobot-maqueen-plus-v3&source=md-export) - **Buzzer** (Audio): Onboard buzzer for audio feedback, alarms, and simple melody playback — [Datasheet](https://openhardware.directory/r?to=https%3A%2F%2Fwiki.dfrobot.com%2FSKU_MBT0050-AA&ref=openhardware.directory&product=dfrobot-maqueen-plus-v3&source=md-export) ## Protocols - **I2C** - **UART** - **USB** - **GPIO** ## Description # DFRobot Maqueen Plus V3 The Maqueen Plus V3 is an advanced STEM education robot designed for the micro:bit platform. It features matrix laser ranging for obstacle detection, 5 line-tracking sensors with built-in intersection recognition, and magnetic encoders with PID control for precise movement. ## Key Features - **8x8 Matrix Laser Ranging Sensor**: 64-point depth sensing, 20-4000mm range, ±11mm accuracy, 60° FOV, 60Hz update rate - **5 Line-Tracking Sensors**: Digital and analog output with dedicated calibration button and 4 junction type recognition - **Magnetic Induction Encoders**: 4-line resolution with PID control for precise distance and angle management - **2x N20 Metal Motors**: Detachable design with independent 5V regulation - **6 RGB LEDs**: 4x WS2812 ambient lights + 2x programmable headlights - **2 Light Sensors**: 0-1023 data range - **IR Receiver** for remote control - **Buzzer** for audio feedback - **14 Extended GPIO Pins** for expansion - **Battery reverse connection protection** ## Specifications | Spec | Value | |------|-------| | Controller | BBC micro:bit (not included) | | Motors | 2x N20 metal geared motors | | Encoders | 2x magnetic induction (4-line) | | Line Sensors | 5x digital/analog | | Laser Ranging | 8x8 matrix, 20-4000mm, I2C/UART/USB | | RGB LEDs | 4x WS2812 + 2x headlights | | Light Sensors | 2x (0-1023 range) | | GPIO Pins | 14 extended | | Weight | 0.4 kg | | Power | AA batteries (2.4-3.0V) or 18650 (3.5-4.2V) | ## Where to Buy - [OpenElab](https://openhardware.directory/r?to=https%3A%2F%2Fopenelab.io%2Fproducts%2Fdfrobot-maqueen-plusv3-stem-robot&ref=openhardware.directory&product=dfrobot-maqueen-plus-v3&source=md-export) — $69.90 - [DFRobot](https://openhardware.directory/r?to=https%3A%2F%2Fwww.dfrobot.com%2Fproduct-2935.html&ref=openhardware.directory&product=dfrobot-maqueen-plus-v3&source=md-export) — $69.90 ## Resources - [product](https://openhardware.directory/r?to=https%3A%2F%2Fwww.dfrobot.com%2Fproduct-2935.html&ref=openhardware.directory&product=dfrobot-maqueen-plus-v3&source=md-export) - [wiki](https://openhardware.directory/r?to=https%3A%2F%2Fwiki.dfrobot.com%2FSKU_MBT0050_Maqueen_Plus_V3&ref=openhardware.directory&product=dfrobot-maqueen-plus-v3&source=md-export) ## Tags `micro-bit`, `stem`, `line-following`, `laser-ranging`, `education`, `pid-control`, `encoders`, `rgb-led`, `dfrobot` ## Images ![DFRobot Maqueen Plus V3](https://nbg1.your-objectstorage.com/openhardware-directory/entities/dfrobot-maqueen-plus-v3/f792711e3aa5.webp) ![DFRobot Maqueen Plus V3](https://nbg1.your-objectstorage.com/openhardware-directory/entities/dfrobot-maqueen-plus-v3/4d3acfa79db6.webp) ![DFRobot Maqueen Plus V3](https://nbg1.your-objectstorage.com/openhardware-directory/entities/dfrobot-maqueen-plus-v3/69d87d4f6ccc.webp) --- [View full device page](https://openhardware.directory/devices/dfrobot-maqueen-plus-v3)