On 6/23/2016 10:53 PM, Chris Albertson wrote: >> Am I missing some obvious cheapie oven without these types of problems? > > A lot of people are building them from Black and Decker (and the like) > toaster ovens. Use Arduino for controller or just eyeballs. oven > thermometer and wrist watch. It is not rocket science the Arduino > controller software reads a thermocouple and controls an on/off relay. > Lots of instructions around if you google for reflow toaster oven. I'm using a PicoReflow.https://apollo.open-resource.org/mission:resources:picoreflow It's Raspberry Pi based, so the board cost is about the same as an Arduino, but I use my tablet as the user interface AND tweaking profile is trivial unlike most of the Arduino based stuff. The system uses an internal web server and can be connected to a local monitor, or a web interface. All the control logic is in Python. I used the tablet browser and I don't need to stand next to it to monitor operation. This is particularly handy when I'm baking out parts. I hand wired the interface board (trivial I/O) and used a purchase MAX31855 based board for another $20 from http://www.playingwithfusion.com/productview.php?pdid=19&catid=1001 (love the site name)
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