Difference between revisions of "Reflow Oven"

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{{Project
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|Name=Reflow Oven
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|Picture=Reflowoven.jpg
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|Omschrijving=
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|Status=Completed
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|Contact=Crashjuh
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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.
  
 
== Status ==
 
== Status ==
Oven has been acquired. It is a cheap 1kW Everglades toaster oven. It remains to be seen if it is powerful enough to reflow in a sensible amount of time.
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<del>
First components for the controller have been ordered.
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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.
 +
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.
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</del>
  
== Controller ==
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We now have a real reflow oven and currently we are testing what the best settings are.
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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Over time, these data are reported here.
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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== Use by Revspace ==
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The oven has 10 memory locations (Program number 01 till 10).
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At the moment we only have programmed program number 01.
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We program the programs for different PCB thicknesses.
  
 
{|
 
{|
|+ Preliminary parts spec
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! Program number !!!! PCB Thickness
 
|-
 
|-
 
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| 01 |||| 1.5 / 1.6 mm
! Farnell order no. !! Type number !! Description !! Cost
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|-
 
|-
 
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| 02 |||| xx
| [http://nl.farnell.com/texas-instruments/ads1118idgsr/adc-16bit-temp-sensor-10msop/dp/1947871 1947871] || ADS1118 || thermocouple amplifier, ADC and reference || € 5.21
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|-
 
|-
 
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| 03 |||| xx
| [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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| 04 |||| xx
| [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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| 05 |||| xx
| - || - || 16x2 LCD display || around €3
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|-
 
|-
 
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| 06 |||| xx
| [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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| 07 |||| xx
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|-
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| 08 |||| xx
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|-
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| 09 |||| xx
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|-
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| 10 |||| xx
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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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* Program number: <br />Enter : 01
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::: Preheat standby: <br />Enter : 080
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::: Preheat airtemp: <br />Enter : 150
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::: Preheat time: <br />Enter : 02:00
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::: Solder temp. :<br />Enter : 250
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::: Solder time: <br />Enter : 01:30
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::: Learn preheat: <br />Enter : 000
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::: Learn solder: <br />Enter : 000
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== Gallery ==
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I2C Led driver breakout board, D1 was hand-soldered. Solder paste was applied using a Mylar stencil cut with the revspace lasercutter.
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[[File:Reflow_ht16k33.jpg|640px]]
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(Image: robv)

Latest revision as of 20:05, 29 August 2016

Project Reflow Oven
Reflowoven.jpg
Status Completed
Contact Crashjuh
Last Update 2016-08-29

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.

We now have a real reflow oven and currently we are testing what the best settings are. Over time, these data are reported here.


Use by Revspace

The oven has 10 memory locations (Program number 01 till 10). At the moment we only have programmed program number 01. We program the programs for different PCB thicknesses.

Program number PCB Thickness
01 1.5 / 1.6 mm
02 xx
03 xx
04 xx
05 xx
06 xx
07 xx
08 xx
09 xx
10 xx


  • Program number:
    Enter : 01
Preheat standby:
Enter : 080
Preheat airtemp:
Enter : 150
Preheat time:
Enter : 02:00
Solder temp. :
Enter : 250
Solder time:
Enter : 01:30
Learn preheat:
Enter : 000
Learn solder:
Enter : 000


Gallery

I2C Led driver breakout board, D1 was hand-soldered. Solder paste was applied using a Mylar stencil cut with the revspace lasercutter. Reflow ht16k33.jpg (Image: robv)