This instructable will help if your trying to get into making your own circuit boards using SMD (surface mount device) re-flow. After hand soldering a bunch of boards I became really interested myself.

In this instructable I'm going to talk mostly about using the Melexis MLX90614 IR (infrared radiation) sensor. Also, while building a sensor interface board, I'll also take care of driving a Crydom SSR (solid state relay).

There is already a bunch of web info on re-flowing boards using either a skillet or toaster oven. Both of the following links are good:



What I thought was missing was information on instrumenting the skillet. This  instructable should take care of that.

Note, Parallax already makes, and sells, a Melexis IR interface board. However, I don't think it has any digital outputs (I could be wrong since I never owned  one). There is no way to remotely mount their sensor either - their design has the sensor solder right onto an interface board.

Step 1: Construct a method to hold the sensor.

Build a simple counterweight so that the IR sensor can be suspended above the skillet. I pulled four wires through the cup and copper spiral.
I know this is a bit strange of a question, but where did you get that table? Its the kinds I see at school, and around the workplace, but I can never figure out where to buy one.
No problem.<br><br>Attached are a couple of images. Hope this answers your question.<br><br>Jim
Great Instructable. Great to see that graph.<br><br>I use a hot plate to solder my boards as well, but I never calculated the temperature ramp. I suspect my hot plate doesn't go up that quickly either, but the little smoke always makes me nervous...<br>
Thanks for the nice comments. <br><br>Someday I'm going to sort out how to interface my Cen-Tech IR thermometer. Have a look at this: http://www.instructables.com/id/Cen-Tech-Infrared-Thermometer-Mount/<br><br>As always, there is more info on my web site: ph-elec.com<br><br>Thanks,<br>Jim

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Bio: Founder of Powerhouse Electronics. For more info goto: www.ph-elec.com
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