How to build a torch with our own hands? | DF LAB: Inventor Series EP05

0 4770 Easy

EP05 Guide for Flashlight Workshop



In this workshop, students will work together to design and make a hand power flashlight. Press the button, it turns on.

Difficulty Level: 1



Age: k1-k3

Number of Participants: 1~24

● Prepare a name label for each student in case they don’t know each other

● Arrange tables and chairs in U-shape for each team

● Put tools and other materials in two specified places of the room

Learning Goals

● Design and make a torch

● Learn to build up a circuit with BOSON

● Use digital media tools to shoot video clips


● BOSON Inventor Kit V1.0 (Refer to introduction for more details)

● Colored Paper


● Scissors

● Colored Pen

● Double-sided Tape

● Camera or Smart Phone


1~1.5 hours

Award and Evaluation Criteria

Students should be informed of the award and evaluation criteria. Special awards will be given to individuals or teams who perform well in the competition.


● Warm-up

5min Get to know a torch

● Introduction

8~12min a. What is BOSON? b. Project interaction display c. Get to know modules and learn how to connect

● Start Making

10~20min a. Analyze and check b. Design structure c. Assemble

● Test

5min a. Test structure and function

● Optimization

5~10min a. Project appearance optimization

● Share

5~20min a. Video shooting b. Project presentation

● Evaluation

5min Project evaluation

● Clean up

5min Dismantle projects and clean up

● Rethink

5min Projects review

Warm-up (5min): teachers ask some questions about torch to lead students to think about how to design it.

● What tools can we use to help us see at night?

● Talk about your fun experience with using a flashlight.

● Observe a flashlight, what parts does it consist of?



a.What is BOSON?

b.Project interaction display

c. Get to know modules and learn how to connect

What is BOSON? Teachers play the video below to show students what BOSON is?

Project interaction present

● Teachers demonstrate the project interaction effect using material objects.

● Present the project effect by playing video

BOSON module function and connection

Teachers tell students the module name and similar applications in daily life.

The torch needs power from main-board and power source.


How do we control the torch? Use the push button, it is a sensor.


A LED is needed, it is an actuator.


Have you noticed the color of these BOSON modules? Red is for power supply, blue for sensor, and green for actuator. How to connect them correctly?

Place the blue sensor on the left side of the mainboard as input, and the green actuator on the right side as output.

Start Making (10min~20min):

Analyze (how to realize functions and connect hardware) and check; design structure; assemble.


Test (5min):

Test whether the project structure is firm and all the modules are tightly clamped.

Test if the torch works as expected.

Optimization (5~10min):

Use colored pen or paper to beautify the appearance of the project.


a.Shoot a video for the project, and post it to social account.

● Project display

● Effect demonstration

● Group photo

b.Present and introduce the project on stage

● Introduce the basic function of the project

● What improvements have you made? And why do you do that?

● What’s the highlight of your project?

Evaluation (5min)

Assess students’ works according to the Evaluation Criteria(see appendix) and select the best one.

Clean up (5min)

● Dismantle the BOSON module on the project

● Put all modules back to the BOSON box.

● Put Inventor Kit and Tools to the specified place.

● Clean up the litters on the table and ground.

Rethink (5min)

● How does your flashlight work? Is there a way to keep it on all the time?

● Do you think the light switch in bedroom has similarities to the button module functionally?


Here are some factors that should be taken into account when designing this workshop, and teachers can adjust, add or cancel some unimportant parts of the process as actual conditions.

● Age: adjust the requirement of skill and knowledge according to students’ age and cognitive ability.

● Time: 50 minutes or more.

● Number of Students: control the number of students and choose to carry out a project in the form of individuals or groups as the actual scene.


Lego: Lego blocks or other materials can also be used to build a torch.


Evaluation Criteria: teachers can observe students in the whole process to evaluate their performance.

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