Peltier on Arduino Nano

Question

Hello fellow element14 users,

I'm making a school project with peltier modules, calculating their temparatures and shutting them down whrçen they exceed the limit temparature.

However, if I want to use peltier modules, 5V is an ideal voltage but ardunio gives 3V on its pins.

I require some help on this.

-Arduino Nano

-12V limV Peltier

-Temp sensor

I might need some help so, If we can connect using Skype or etc. It would be awesome.

Best regards. Oguz Alp

jw0752 · Answer

Hi Oguz,

You will need to get some N Channel MOSFETs that will turn on with logic level signals (3.3 Volts in this case). You can then use the MOSFETs to control 5 volts or 12 volts to your peltier modules. You can search the internet for more examples but here is one showing how to hook up the circuit.

http://bildr.org/2012/03/rfp30n06le-arduino/

John

jw0752 · Answer

I did a little research on the MOSFET RFP 30N06 used in the link I gave you above and it would be an excellent choice for load voltages up to 60 Volts. Here is a link to more information from Newark Electronics where they sell them for a little over $1 US each.

http://www.newark.com/vishay/irlz34pbf/n-channel-mosfet-60v-30a-to-220/dp/63J7707?ost=RFP30N06&selectedCategoryId=&isexcsku=false&categoryNameResp=All%2BCategories&searchView=table&rpsku=rel3%3ARFP30N06LE

You can also get a data sheet on this site by clicking on the Data Sheet PDF link. This MOSFET will turn on with about 2 volts which is well withing the capabilities of your Arduino. If you use any type of inductive device as a load be certain to put a flyback diode across it to prevent damage to other components in the circuit. A Peltier has minimal inductance so a diode will not be necessary with them.

John

Peltier on Arduino Nano

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