The B9 Robot Mobile Laboratory: A Low-Cost AI-Enabled Science Communication and STEM Engagement Tool for New Zealand Classrooms

Overview This record documents the design, construction, and science communication outputs of the B9 Environmental Control Robot — a child-friendly, AI-enabled mobile science laboratory built by Michael Fenton in New Zealand. Believed to be the only standalone AI-enabled B9 robot in New Zealand, and used as an authentic STEM engagement tool for learners of all ages. The B9 robot is not a studio-accurate replica. It is an intentionally low-cost, modular, touchable science instrument built from recycled parts and inexpensive off-the-shelf components. It is designed to be reproduced by school students. All circuits are modular, run on 5 volts or 4.5V 3xAA battery packs, and are safe for learners to work with at desks in any classroom setting. Technical Capabilities The robot integrates multiple systems simultaneously: Offline AI voice recognition (DF2301Q module) — operates without internet connectivity, supports any language including te reo Maori ESP32 and Picaxe microcontrollers — standard school-available platforms, 5 volt systems GPS navigation system ESP-NOW bidirectional emergency wireless communication Environmental sensors: temperature, pressure, UV light, infrared, proximity, magnetic fields, weather data Real-time data broadcast via WiFi to phones, tablets, and laptops as a served web page with graphs and SVG visualisation MP3 playback for voice, sound effects, and music Science communication using original 'Roll with me B9' songs Simon Says interactive game via front panel buttons Personality upload system — different personalities affect voice tone, speed, movement behaviour, and humour settings Storage compartment for a class set of digital multimeters and ultra-low-cost sensors for field work RIGEL compatible bidirectional serial communications by cable or wirelessly Pluggable RIGEL compatible homemade sensors (on long leads) for alpha particle, sound, water hardness, salinity, soil acidity, temperature, humidity, UV, IR, visible light, magnetic field, static electric field, lightning, EMF, vibration, heart rate, respiration, motion, range finding and photogate sensing Torso section removable and operable independently from leg section — transportable in a car back seat while still operating The web server page served by the robot is designed as a functional data display: graphs, SVG robot image, and a simple colour palette — demonstrating that data visualisation is itself a design and art challenge, not purely a technical one. Pedagogical Framework The B9 robot is the physical embodiment of three decades of practice-embedded research in low-cost authentic science instrumentation. It operationalises the "Build it, Test it, Use it" pedagogy in a single object: BUILD IT: design and construction require creativity, imagination, mathematics, electronics, coding, graphic design, and aesthetic judgment simultaneously TEST IT: testing and modification — failure as data, multiple right answers, iterative improvement USE IT: the robot functions as a working science laboratory, science communicator, and classroom engagement tool The B9 project challenges the false dichotomy between creativity and academic achievement. Designing the voice, personality, lighting effects, web interface, and soundscape requires the same cognitive processes as designing a scientific instrument — because it is a scientific instrument. Science Communication Outputs This record includes the original song "Roll With Me, B9" in four versions, written by Michael Fenton: Junior scientists version Young scientists version Cyberpunk scientists version Pop scientists version The lyrics distil the teaching philosophy of the entire portfolio in a form accessible to children: science as curiosity, play, invention, and wonder; technology as the tool science produces; the robot as partner rather than replacement for the scientist's own senses. Key lyric: "Roll with me, B9, under open skies / You add to what I'm seeing, you don't replace my eyes." The four versions demonstrate differentiation by audience — the same content adapted for different age groups and aesthetic preferences — which is itself a pedagogical demonstration of the low-floor, high-ceiling principle. Connection to the Longitudinal Research Portfolio The B9 robot is the 2025 synthesis of a research trajectory beginning in 1991: 1991: Self-taught QBasic coding to build a GIS mapping system — the first documented instance of building a tool the available software was not designed for 1997: Nexus Research Group founded — low-cost authentic science in a school with no equipment 2008: RIGEL invented — game engine subverted into a universal sensor interface 2008: Ministry of Education E-Learning Fellowship — mobile sensor technology 2011: Digital multimeter as data logger — cents-cost sensors for any classroom 2023 - 2025: B9 robot — all of the above integrated into a mobile, AI-enabled, child-friendly science laboratory 2025: Casio calculator serial protocol discovery and invention of encoding algorithm - five-dollar timed data logging with webserver, based on all of the above. The founding question — how do you do authentic science with nothing? — is answered here with recycled parts, a five-volt power supply, and an offline AI module. Files Included Roll With Me B9 — Song lyrics with explanation of meaning (TXT) Roll With Me B9 — Young scientists version (MP3 and MP4) Roll With Me B9 — Cyberpunk scientists version (MP3 and MP4) Roll With Me B9 — Pop scientists version (MP3 and MP4) B9 robot voice test (MP3) Marvin personality voice test (MP3) B9 web server screenshot (JPG) B9 web server ESP32 C++ code (INO) B9 voice command control ESP32 C++ code (INO) B9 belly lights Picaxe 20M2 code (BAS) B9 'Neon" LED mouth circuit - safe for children with Picaxe BASIC and ESP C++ code examples (PDF) B9 'Neon" mouth and LED light test (MP4) B9 robot photograph (JPG) Related Works Multimeter as a data logger: https://doi.org/10.5281/zenodo.19325413 RIGEL sensor interface system: https://zenodo.org/uploads/19508521 Casio calculator data logger: https://doi.org/10.5281/zenodo.19281514 Nexus Research Group founding record: https://doi.org/10.5281/zenodo.19365952 Portfolio home: https://mikefentonnz.github.io Licence Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)