29
Dec 12

Reflow Toaster Oven: Conclusion

So the project is finally done other than cleaning up the box and making it look better etc.... The big question though, is, was this project really worth it? How well does this reflow toaster actually work? This is the answer.

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20
Dec 12

Reflow Toaster Oven Vid 8: Analog Op Amp Circuit

This section discusses the analog front end for all of my sensors. I had to do some signal conditioning which I'll discuss in a second.

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20
Dec 12

Reflow Toaster Oven Vid 7: Power System

Here I discuss the power system I used for this project. It's pretty simple and short.

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20
Dec 12

Reflow Toaster Oven Vid 6: Integer Division and Main State Machine

This will be a quick write-up about how I did my integer division by 10 and a brief discussion of the main state machine that runs the overall 140-170-215 thermal profile.

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19
Dec 12

Reflow Toaster Oven Vid 5: ADC10 ISR

This (ADC10 interrupt service routine) is one of the most confusing sections. Here, I sample and do most of the math and averaging calculations regarding room temperature and thermal couple temperature.

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19
Dec 12

Reflow Toaster Oven Vid 3: MSP430 configuration

In this part I go over the MSP430 configuration for this project...ex: clocks, timers, ADC10, etc...

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18
Dec 12

Reflow Toaster Oven Vid4 - Temp. Control and Comm. links

Here I discuss the details of me temperature control algorithm as well as some simple interrupt service routines I use to run my communication links (comm. links back to the GUI).

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18
Dec 12

Reflow Toaster Oven Vid2 - Demonstration

Here is the system demonstration. There isn't really much to discuss in text because the video does a much better job of showing this setup in action. The profile I've developed is a ramp to 140 degrees C with a hold time of 45 seconds once we reach 140. Next, we ramp up to 170 C and hold there for 45 seconds. The last target temperature is 215 C and we hold there for 60 seconds. This last temperature is where things get interesting. Once our hold time expires the system shuts down. These profiles are completely customizable in software (embedded C code in the MSP430).

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18
Dec 12

Toaster Oven Vid1 Introduction

In this project I took a standard toaster and turned it into a reflow oven. This is the introduction video discussing the system and it's main parts. As discussed in the video, there are four main parts. The first is the GUI or graphical user interface which allows user interaction with the system and outputs data for viewing. Second is an analog interface used to boost the thermalcouple signal as well as the room temperature signal from a microchip MCP9700A. The third part is the embedded digital controller (MSP430G2553 on a launch pad) and last is the power system. Once I got all the bugs worked out and got these parts integrated the system ran very smoothly as you can see in the next post (system demonstration).

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