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Electronic Circuit -Help :D


New Member
My name is Daniela, I'm student and I need help to anyone who can help me :D

Project goal: Control the temperature inside a closed chamber

I need help to connect the all components and I don't know how because I'm new in this .
I don't know how to amplify and to maintain the current, voltage so as to the whole circuit should work, what
value is need for resistance, capacitors and other necessary components.

I use a launchpad MSP-EXP430FR4133. I prefer to use power supply 3.3V (not 5V). To amplify the voltage I use a
DC Boost Converter 2A power supply module MT3608 where the module output voltage can be adjusted.

The temperature sensors it for hot side and cold side of Peltier element. A good size to have on the hot side
is about 3 times as big a heatsink than on the cold side to don't find that both sides are getting hot.

I have attached below a Block diagram, a List of Components, Description and What it looks like the final project.

Please help me :D :)

MSP-EXP430FR4133 :http://www.ti.com/lit/ug/slau595b/slau595b.pdfs
LM35DZ/NOPB :https://www.ti.com/lit/ds/symlink/lm35.pdf
LMT86LP :https://www.ti.com/lit/ds/symlink/lmt86.pdf
TMP112AIDRLT :https://www.ti.com/lit/ds/symlink/tmp112.pdf
TEC-40-33-127 :https://eu.mouser.com/datasheet/2/433/Wakefield_Vette_Thermoelectric_Cooler_Full_Data_Sh-1501217.pdf
MT3608 :https://www.olimex.com/Products/Breadboarding/BB-PWR-3608/resources/MT3608.pdf



Super Moderator
Most Helpful Member
Don't create multiple posts on the same subject, it only creates confusion.

The other thread is deleted.



Active Member
Is this homework? Is it due on Friday? :)

There is nothing terribly complicated there (I think that even I could do it), but there are a lot of separate functions and I think that you need to break it down into small parts.. Can you answer a couple of questions?

What are the dimensions of the chambers? Can we assume a certain level of insulation, or is that cardboard a real specification?
Do you have to use the components listed? Is that part of the project assignment?
What is the range of target temperature values in the closed chamber?

Have you done any of it yet?


Well-Known Member
Most Helpful Member
Project goal: Control the temperature inside a closed chamber
How long has the system got to stay stable for - and is the target temperature above ambient?

ALL the power going in to the peltier module is dissipated as heat and the left/hot side of your chamber will rapidly get so hot the "cold" side of the peltier module is also above ambient.

If the right chamber of the device is supposed to be cooled below ambient, a chemical system (an endothermic reaction) with a system to control the mixing of the chemicals may be more suitable.
eg. Ammonium chloride based "cold packs" with the water removed and a feed to the chemical controlled by a small pump, to moderate the effect.


Well-Known Member
Most Helpful Member
Someone with the exact same problem posted over on instructibles.com. Hopefully it helps you.


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