Hi readers, this post is about giving you two Amazing Science Fair Project idea, I covered in very detailed steps about building this along with working principles behind this.
How to Make small water pump using DC motor
How to Make Rechargeable Emergency led light
First we will look into making water pump that can be your new science fair project idea.
Basic principle behind working Centrifugal pump
Our mini version of water pump works on exact same principle as larger version
When the motor is switched on shaft rotates impeller inside pump, The blades of impeller carry water Due to high RPM centrifugal force will be created
As centrifugal force have tendency to throw object outwards, Impeller blades throw water in outwards direction, When this happens spontaneously at very high speeds water comes out rapidly from water discharge port
Materials used to build this mini pump for science fair project idea
Single shaft DC Motor, 10ml Syringe barrel for making water pump body
5ml Syringe plunger part for making impeller, Rubber seal(from 5ml) to water seal pump body
Steps for making mini water pump from DC Motor
Remove barrel flange from 10 ml syringe barrel Using cutter or hobby blade cut the barrel to required length
usually trimmed edges will be rough, make it smooth by rubbing to Sandpaper, I will make impeller from 5ml syringe plunger, to make this
remove rubber seal from 5ml plunger, Cut tip part of plunger to half size of pump body, please refer images below for clear idea
Make a hole on the center part of impeller
DC motor shaft should be attached with rubber seal from 5ml syringe
I have made small hole on rubber seal which is little larger than shaft size, After attaching rubber seal attach impeller to motor shaft
Carefully insert precut pump body made earlier from 5 ml syringe barrel
water outlet making for water pump
Seal the edges of barrel to DC motor body using hot glue, Small hole is made on pump body as in image, this is for water outlet
I used recycled color pen body for water outlet pipe, Everything is made water sealed using hot glue Now our Mini water pump is ready for use
I will power this Mini water pump using two Lithium ion batteries, Lithium ion batteries are connected in series
Additionally a switch can be added for much more convenient use
How to Use our project
Just keep bottom part inside water, switch on the pump
After few seconds of running water will be discharged out from water outlet, If Discharge is low, make sure water inlet is made bigger than water outlet
- Very easy to make as Less cost materials used
- Encourages learning of various concepts
- Less Efficient since Motor gets heated up too quickly
- Won’t work on high heads
This was all about making and explanation of mini water pump as science project ideas, Now Let’s dive into another project.
How to make Rechargeable Emergency LED light
when the power goes off definitely one might have used emergency light, I made small rechargeable and portable emergency LED light from basic materials.
why can this be amazing science fair project idea?
As many people in remote areas are struggling due to lack of power outage, using this inexpensive and efficient project many of such problems can be solved, here the cost is much less as compared to Lights readily available in market thereby lifespan also!
- output from this light is around 15W as we are using 1W 15 LED bulbs
- This project won’t cost you much as it looks
- Longer light duration time and Easy to build as this is Made from recycled materials
Requirements for making emergency light
Small Circle shaped cardboard for frame supports
Alternatively you can use light wood, Two pieces of cardboard for covering the top and bottom
One Watt LED bulbs(bought from local electronics shop), 18650 BATTERY charging module
lithium ion battery, simple on off switch and Hot glue or super glue
Steps for making this amazing science fair project ideas
I have used 15 LED in total, First 9 LED are connected in parallel, solder copper wire two legs of diodes and strip is made
Later six LED should be connected in parallel by soldering copper wires thereby another strip, later fix this two Pairs in parallel
Make sure none of the wires touch, recommended to use insulated copper wire
Refer images if you have any confusions
Once LED are placed in upper panel, using slight amount of super glue or hot glue couple it firmly, Using TP 4056 module makes this entire setup rechargeable
Connect one end from LED Panel(negative) to switch and from switch to TP 4056 module(negative outlet port)
Other terminal from LED goes to Positive port in charging module
Once this is complete solder wires to battery and connect those wires to charging module board
Note: Always batteries should be connected at end because sometimes charged batteries may burn the circuit while working if not connected properly or like terminals touch by accident.
Finishing homemade emergency light
After making all circuit connections Embed all Electronic components inside cardboard body
Using hot glue stick battery inside so that it won’t shake while carrying, Make small hole in wall of cardboard as a result charging port is available outside
To Make charging indicator I made small holes using needle on LED Panel sides
Battery charging and full indication status can be viewed here, Once all these are in it’s place Switch on your project
Make sure u are not looking into those LED’s directly as it is very bright Use it whenever necessary!
- Provides bright light at low cost
- Anybody can build this
- All components are easily available
- Not waterproof
- Fragile compared to plastic fames
- No dim control
Video of best science fair project idea!
Check here for Video which shows science fair project idea
That was all about amazing science project ideas which you can easily make, Hope you definitely liked these two ideas
If you have any questions related to any steps from this project let me know in comment box, Share this ideas with your needy friends, Thank you and have a Good day