[SS2S-Main] Re: temperature controller with arduino

  • From: Timothy Young <tyoung489@xxxxxxxxx>
  • To: "sugarshot@xxxxxxxxxxxxx" <sugarshot@xxxxxxxxxxxxx>
  • Date: Fri, 20 Jun 2014 17:30:38 -0700

As much fun as it is to play with Arduinos it's a waste of time & money.
Programmable PID Temperature Controller with single or dual sensors can be 
purchased on eBay for $15-$60. 

Where will you be placing the temperature sensor for the controller, embedded 
in the part or on the surface? 
Or are you going to try to run the oven at the desired temperature and 
guesstimate the time it takes for the part to equilibrate? I believe that would 
problematic and take longer to achieve your cure. I think that the manufacture 
of the composite materials should be able & more than willing to provide you 
with general propose curing methods & procedures. 

Are you building your own over with strip heaters, fans, etc? Or are you 
planing to interface the controller and fans to an existing oven?

For convection circulation you only need constant speed fans and if you plan on 
using axial flow computer type fans be aware most are rated to 60-C or  70-C.  
You can get 105-C rated fans but not from an old computer. sofasco.com is one 
of many places you can get them. You could use standard fans but it anyone's 
guess on how long they'll last.
If the parts are small you can buy small electric convection ovens sold as 
Toster/Pizza ovens.
Check Walmart, Best Buy, Target, eBay, Amazon.

Sent by Timothy Young 

> On Jun 20, 2014, at 4:01 PM, Vicente Alvero Zambrano 
> <vicente_alvero_14@xxxxxxxxxxx> wrote:
> Florin that's perfect. 
> The system must be simple (as cheap as possible). With a source of heating 
> (resistance) and several computer fans to circulate the air. Arduino must be 
> able to control the temperature (using the resistance and the fan) according 
> to a predefined schedule. A program is for example: 
> 20 ° C to 100 ° C by increments of 20 ° C / h. 
> 5 hours at 100 ° C. 
> 100 ° C at 20 ° C with a decrease of 20 ° C. 
> Ideally develop a graphical interface to vary these parameters at will.
> Date: Sat, 21 Jun 2014 01:32:37 +0300
> Subject: [SS2S-Main] Re: temperature controller with arduino
> From: florin.mingireanu82@xxxxxxxxx
> To: sugarshot@xxxxxxxxxxxxx
> I can help with the temperature controller but I would need more precise 
> specifications: like temperature range, control "band" etc.
> On Fri, Jun 20, 2014 at 10:16 PM, Vicente Alvero Zambrano 
> <vicente_alvero_14@xxxxxxxxxxx> wrote:
> Hi,
> Anyone know how to make a temperature controller with arduino to make a home 
> oven to cure composite? 
> The idea is to monitor several computer fans and thermal resistances. Must be 
> able to follow a cure profile and decreased with increases in temperature 
> curing.
> Any volunteer?
> Cheers
> Vicente Alvero
> -- 
> Florin Mingireanu
> Romanian Space Agency
> Str. Mendeleev 21-25, et. 5, sector 1, 010362 Bucuresti, ROMANIA
> office tel. +40-21-316.87.22; +40-21-316.87.23; 
> cell: +40-757-768971 (primary phone)
> fax +40-21-312.88.04
> florin.mingireanu@xxxxxxx
> http://www.rosa.ro

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