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Design a simple and affordable magnetic stirrer

As you must know, magnetic stirrers can be very expensive, yet they are simple devices.

Therefore my goal is to create a magnetic stirrer that is cheap to buy in kit and simple to assemble yourself.

My requirements for the device are:

• it must be capable of stirring at least 2 litters of water

• it must be capable of heating water to at least 110°C

• it must be as thin as possible for stability

• the stirring an heating elements must be able to operate independently, they must be controllable by the user and lights must indicate their activity

• the control buttons must be far enough from the heating element for user’s safety

• there should be 2 models, one capable of heating, the other not

• the non heating model should be easy modifiable to add the heating components

• all parts must already exist and be widely available in international online stores

• assembly must be very easy; cutting (except wires), SMD, software etc should be avoided

• it must be adapted to the French electrical current

• cost of non heating model should be around $50, cost of heating model should be around $75

• parts should be of good quality (not super cheap made in China)

• the heating element should not damage the stirring element

Your job will not be to design the device from A to Z, but as a mechanical engineer, it will be to:

• provide different solutions to the problem and explain each’s advantage and disadvantage

• tell which parts should be used (give examples from online stores), explain why they should, why others shouldn’t (especially concerning the heating elements) - this includes heat insulation

• tell the required specifications of parts

• if you are also electrical engineer: draw the schematic, design the circuit of both models and select the parts from online stores

N.B. By applying for this job you agree not to disclose any document or information exchanged and to cede to me all rights over the created materials. Applications that ask too high price, ask for upfront or do not answer how the job would be done, will be rejected.

Skills: Chemical Engineering, Electrical Engineering, Electronics, Mechanical Engineering, Product Design

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About the Employer:
( 3 reviews ) ANGOULEME, France

Project ID: #4412199

Awarded to:


Good project, let's do it!

$150 USD in 15 days
(0 Reviews)

6 freelancers are bidding on average $324 for this job


Hi, I am a mechanical engineer and have extensive experience of designing different kinds of mechanical devices and can certainly do the job. But the price range mentioned is very low for this kind of job as it will re More

$600 USD in 30 days
(12 Reviews)

Professional engineer can take care

$334 USD in 15 days
(19 Reviews)

Dear Sir, We are Reserach and Development company whose working area are : -Digital Motor Control -Analog Design -Electronic Design -Power Electronics -PCB design -Embedded system -Matlab -Simulation of ha More

$200 USD in 3 days
(16 Reviews)

Hello, I'm a Mechatronics engineer and I can help you! Please se my PM. Thanks.

$200 USD in 5 days
(2 Reviews)

dear sir, please see the pm.

$500 USD in 30 days
(0 Reviews)

I am Mechanical Engineer with fifteen years experience in 2D and 3D drawings of mechanical engineer and metallic constructions. Pls check PM for more info.

$160 USD in 15 days
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