Build a Mini CubeSat at Home: Spacecraft Testing Activities Parents and Kids Can Try

Build a Mini CubeSat at Home: Spacecraft Testing Activities Parents and Kids Can Try

Turn real-world spacecraft testing into safe, supervised at-home STEM experiments. Inspired by ESA-style workshops for university students, these kid-friendly projects teach vibration basics, thermal thinking, and cleanroom habits using household items and simple toy and kit recommendations. Perfect for family STEM time, homeschool lessons, or weekend curiosity sessions, these activities show what engineers do before a satellite ever leaves the ground — without specialized lab gear.

Why CubeSat DIY is a great family STEM topic

CubeSats are small, cube-shaped satellites that are widely used for education and research. Because they’re compact and modular, they make an excellent theme for family projects. These activities focus on concepts used in real spacecraft testing: vibration (to survive launch), thermal management (to survive space temperatures), and cleanliness (to avoid contamination). Each activity is safe and supervised, designed to teach skills like measurement, step-by-step procedures, and controlled experimentation.

Before you start: safety and materials checklist

Supervision is required for all activities. Review the checklist together with kids and set clear boundaries about tools and heat sources.

• Adult supervisor present at all times
• Safety glasses for vibration and thermal demos
• Heat-resistant gloves (for hot packs or warmed items)
• Non-flammable work surface and a first aid kit
• Smartphone or tablet with measurement apps (accelerometer, thermometer)
• Basic tool kit: tape, scissors, hobby knife (adults only), small screwdriver, tweezers

Activity 1 — Vibration testing for kids: Build a simple shake table

Launch vibration is one of the toughest environmental tests satellites face. A safe, child-friendly shake table teaches how different mounting systems and materials absorb vibration.

Materials

• Sturdy wooden board or thick foam board (base)
• Small DC hobby motor with offset weight (or a simple phone in vibration mode)
• Rubber bands, foam blocks, or springs (damping elements)
• Miniature mock CubeSat (cardboard box ~10cm cube, decorated)
• Smartphone with accelerometer app

Steps

1. Mount the motor on the base so the offset weight makes the board vibrate. If using a phone, place it under the base near the edge and set it to vibrate.
2. Place the mock CubeSat directly on the board and run the motor for 10–20 seconds. Record acceleration with the phone app, and observe what happens to your model.
3. Repeat with damping: put foam blocks, rubber bands, or springs between the model and base. Compare acceleration readings and note which setup reduced vibration best.
4. Try different payloads inside the mock CubeSat (paper, clay, small toy) to see how internal mass changes response.

Learning points and extensions

Discuss why satellites are mounted on shock absorbers in rockets. Ask kids to predict results, then test. For older children, graph accelerometer readings over time and calculate peak acceleration. This activity pairs well with electronics kits that include vibration motors and sensors.

Activity 2 — Thermal thinking: A safe thermal vacuum demo (no vacuum pump required)

True thermal vacuum chambers are expensive, but you can teach thermal concepts at home. The goal is to show how insulation, conduction, and large temperature swings affect a small object like a CubeSat.

Materials

• Insulated lunchbox or cooler
• Reusable ice packs and hot packs (hand warmers)
• Disposable thermometer or infrared (IR) thermometer
• Aluminum foil and black paint (or black construction paper)
• Small sealed container to represent a payload

Steps

1. Place the mock CubeSat and thermometer inside the insulated box. Record the starting temperature.
2. Introduce a hot pack on one side and an ice pack on the other to create a thermal gradient. Close the box and observe temperature changes at 1, 5, and 15 minutes.
3. Swap outer surfaces: wrap the mock CubeSat in aluminum foil (to reflect heat) and then in black paper (to absorb heat). Repeat the experiment and compare temperatures.
4. Optional: mimic outgassing by placing a sealed bag with a wet cotton ball inside a small container and warming it slightly to see condensation form on the lid (adults only, gently warm with body heat or a warm pack).

Learning points and extensions

Talk about why satellites can get very hot on the sun-facing side and very cold in shadow. Discuss thermal coatings and why engineers choose reflective or emissive surfaces. Older kids can calculate temperature change rate and discuss heat transfer modes.

Activity 3 — Cleanroom play: Low-cost contamination control

Cleanrooms prevent dust and contamination from damaging spacecraft instruments. You can teach the habits of contamination control with a role-playing setup that’s fun for kids.

Materials

• Disposable gloves, safety glasses, hairnets (or shower caps)
• Lint-free cloths or lens wipes
• Camera air blower (not compressed canned air for kids), tweezers, and small trays
• Large clear plastic tote and a box fan with a furnace filter (to create filtered airflow for supervised demonstrations)

Steps

1. Set up a clean workbench: clear surface, spread lint-free cloth, and put on gloves and hairnet.
2. Place small “payload” items on trays. Practice handling them only with tweezers and note fewer fingerprints and dust.
3. For a fun experiment, dust two identical small items slightly (use talc very sparingly) and have kids follow cleanroom steps to see which one stays cleaner over time.
4. Show how a simple filtered fan and tented area can reduce visible dust. Stress that this is only a teaching demo and not a substitute for certified cleanrooms used by agencies like ESA.

Learning points and extensions

Discuss why contamination matters for optics, sensors, and moving parts. Introduce vocabulary like particulate, outgassing, and HEPA filtration. For older kids, create a checklist for an “assembly protocol” to practice step-by-step procedures used in labs.

Activity 4 — Build and test a functional mock CubeSat

Bring together the previous activities by building a small flight-like mockup with a simple electronics payload. This is where kits and toy recommendations are helpful.

Suggested kits and toys

• micro:bit or Arduino starter kit — great for simple sensors and data logging
• Raspberry Pi Zero with camera module — for basic imaging payloads (adult setup recommended)
• Craft CubeSat model kits or foam-core craft supplies (cardboard, balsa wood) — for structural mockups
• Shake table kits or educational vibration kits — some hobby suppliers sell table kits designed for classrooms

Steps

1. Assemble your CubeSat shell from a kit or craft supplies. Make compartments for batteries, sensors, and a payload.
2. Choose a payload: a temperature sensor, light sensor, or small camera. Connect to micro:bit or Arduino and write a tiny program to log data to an SD card or send simple serial output to a parent’s laptop.
3. Run vibration and thermal demos and record sensor outputs before and after. Discuss how functional testing checks whether electronics survive stress.
4. Create an assembly log and cleaning checklist — this teaches documentation that real engineers use for traceability.

Matching toy & kit recommendations for each activity

• Vibration testing: educational shake table kits, basic DC motors with offset weights, and accelerometer modules for Arduino or micro:bit.
• Thermal demo: IR thermometer (non-contact), reusable hot/cold packs, insulated cooler — safe and reusable household tools.
• Cleanroom play: lens wipes, disposable gloves, camera air blower, and a simple HEPA box filter for supervised demonstrations.
• Functional mockup: micro:bit or Arduino starter kits, Raspberry Pi camera modules, and craft model kits for the satellite chassis.

Practical tips for parents

• Plan a 1–2 hour session with short focused activities to keep younger kids engaged.
• Turn tests into friendly competitions: which damping setup reduces vibration most? Which coating changes temperature fastest?
• Keep a lab notebook — kids can draw observations, paste photos, and write short conclusions.
• Link these activities to real STEM pathways: reading about ESA workshops and student programs can inspire teens who want more advanced learning.
• For bargains on kits and seasonal offers, check family toy deal guides and educational toy roundups — this can keep costs down while you build a home lab. See our guide to finding the best toy deals and creative craft kits for families for ideas.

Explore related family learning articles on our site: try our roundups of the best crafting kits for parents and kids or ideas for balancing back-to-school toys that build skills beyond the classroom.

Learning outcomes and next steps

After these activities, kids will understand the basics of vibration, thermal control, and contamination prevention — three pillars of spacecraft testing. They’ll also gain hands-on experience with simple data collection, hypothesis testing, and documentation. For families who want to go further, consider community programs, local maker spaces, or applying to structured workshops and camps — organizations like ESA run formal spacecraft testing workshops for students, and reading about those programs can help older teens plan an aerospace pathway.

Whether you’re testing a cardboard CubeSat or logging temperature with a microcontroller, these low-cost, high-learning activities bring aerospace engineering into the home. Small experiments, guided curiosity, and safe tools make space STEM accessible and fun for the whole family.