Difference between revisions of "Reflow Oven"

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{{Project
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  |Name=ReflowOven
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  |Status=In progress
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  |Contact=User:smeding
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  }}
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Because modern electronics components are tending more and more towards becoming SMD-only, and because the associated size reduction can also be very useful for space projects, we need a reflow oven.
 
Because modern electronics components are tending more and more towards becoming SMD-only, and because the associated size reduction can also be very useful for space projects, we need a reflow oven.
  
== Donators ==
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== Status ==
The current direction the project seems to be going (buying a new oven and modding it) we are going to need a little more funds than I (smeding) can provide on my own. 100 EUR should be more than enough to cover everything, to give an idea of the funds needed. Better budget will come when decisions and designs are finalised.
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Oven has been acquired. It is a cheap 1kW Everglades toaster oven and has been able to do very crude reflow.
 
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A prototype for the controller has been built and successfully measures temperature. I (smeding) am currently hammering out the PID loop to keep it at a fixed temperature. After that, all it needs is a little bit of UI and we should be good to go.
* smeding can contribute about €20
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== Oven ==
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Haven't hunted around that much, but current best choice seems to be [http://www.block.nl/article/getArticleDetails?artNr=83550 this]. We can do cheaper if we find something second-hand. Feel free to add suggestions.
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We probably want the following from an oven:
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* Small volume: 15L-ish
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* High power: 2kW-ish, preferrably top and bottom elements1
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* With exhaust fan if possible, as we'd need one anyway
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== Controller ==
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To be constructed. Will probably consist of a large triac to switch the heating element and a fan on and off in a control loop with a thermocouple.
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We still need a decent fan to speed up the cooling phase. Needs to be able to withstand rather high temperatures, something from an oven would be ideal.
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{|
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|+ Preliminary parts spec
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|-
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! Farnell order no. !! Type number !! Description !! Cost
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|-
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| [http://nl.farnell.com/analog-devices/ad8495armz/ic-thermocouple-k-w-comp-8msop/dp/1864707 1864707] || AD8495ARMZ || Type K thermocouple amplifier and compensator || € 6.82
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|-
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| [http://nl.farnell.com/_/sonde890/probe-thermocouple-k/dp/4283831 4283831] || SONDE890 || Type K thermocouple itself ||  € 4.76
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|-
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| [http://nl.farnell.com/labfacility/im-k-lcf/socket-mini-single-sprung-type/dp/8598282 8598282] || - || Type K thermocouple connector
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|-
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| - || - || 16x2 LCD display || around €3
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|-
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| [http://nl.farnell.com/stmicroelectronics/bta41-600brg/triac-40a-600v-top-3/dp/1057288 1057288] || BTA41-600BRG || Beefy TRIAC for heater switching || € 4.66
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|-
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| [http://nl.farnell.com/isocom/is620x/optocoupler-dip-6-triac-o-p/dp/1683241 1683241] || IS620X || optocoupler triac driver || € 0.49
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|}
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Revision as of 21:57, 3 March 2013

Project ReflowOven
Status In progress
Contact User:smeding
Last Update 2013-03-03

Because modern electronics components are tending more and more towards becoming SMD-only, and because the associated size reduction can also be very useful for space projects, we need a reflow oven.

Status

Oven has been acquired. It is a cheap 1kW Everglades toaster oven and has been able to do very crude reflow. A prototype for the controller has been built and successfully measures temperature. I (smeding) am currently hammering out the PID loop to keep it at a fixed temperature. After that, all it needs is a little bit of UI and we should be good to go.