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--- tool:smd_reflow_oven [2017/02/04 00:19] – majicj
+++ tool:smd_reflow_oven [2021/07/15 19:09] (current) – packetbob
@@ Line 1: / Line 1: @@
-====== VHS Reflow Oven ======
+====== SMD Reflow Oven ======
+{{:tool:oven.png?400|}}
-VHS now has it's own SMD Reflow Oven
-It's sitting in the soldering section (looking like a mild mannered toaster oven)...
-The oven is based the design and controller found here:
+^ Status             | Working as of Feb 3 , 2017                          |
-[[http://www.whizoo.com/reflowoven]]
+^ Training           | Recommended                                       |
+^ Hackable           | NO                                                              |
+^ Usage Restrictions | Members Only                     |
+^ Owner              | VHS                                          |
+^ If it Breaks       | Unplug machine, put a "broken" sign on machine, contact PacketBob.   |
+^ Loan Status        | Owned                  |
+^ Arrival Date       | Feb 2017 (New Controller July 2021)                                                                  |
+^ Location           | Soldering Bench C3                                      |
+^ Value              | $$                                                                     |
+^ Champion           | See [[tool:compendium_of_champions#tools|Compendium of Champions]]     |
-It is running v2.0 of the software that you can find here:
-[[https://github.com/engineertype/ControLeo2]]
-The only thing I added was a VHS splash screen when the controller starts up.
-While I didn't document the build of this oven, it is very similar to the one I built for myself and you can find the Instructable for it right here:
+====== Information ======
-[[http://www.instructables.com/id/Making-A-SMD-Reflow-Oven/http://www.instructables.com/id/Making-A-SMD-Reflow-Oven/|Make S SMD Reflow Oven]]
-The one feature I added to this oven was the addition of an interior light so you can see your board while it bakes. I found, that with my oven, I was often using a flashlight to watch the process. This is much more convenient.
-Hell.. While you are at it you should [[http://www.instructables.com/id/How-to-set-up-repair-adjust-and-use-a-solder-paste/|check out my Instructable on setting up and using a solder paste dispenser]]. We don't have one at the Space (yet) but it has some basic info on SMD soldering using the oven:
+VHS now has a SMD Reflow Oven that is sitting in the soldering section (looking like a mild mannered toaster oven)…
+The oven is based the design found here: https://www.whizoo.com/reflowoven
+It has recently been upgraded to a new ControLeo3 touch screen controller (https://www.whizoo.com/) that features a touch screen and allows for multiple profiles. This lets you store different profiles for using different types of solder.
+While I didn't document the build of this oven, it is very similar to the one I originally built for myself and you can find the Instructable for it right here: https://www.instructables.com/Making-A-SMD-Reflow-Oven/
+While you are at it you should also check out my Instructable for setting up a solder paste dispenser: https://www.instructables.com/How-to-set-up-repair-adjust-and-use-a-solder-paste/ We don't have one at the Space (yet) but it has some basic info on SMD soldering using the oven
+The oven currently has two profiles configured (#1 - Lead free paste 250C or Leaded Paste 225C). The oven can have 28 different profiles added using the SD card. Refer  to this page for information on creating more: https://www.whizoo.com/profiles
 ====== Basic Instructions: ======
-  - Turn on power using red POWER switch located on lower right side of oven.
+) Turn on power using the red **POWER** switch located on the lower right side of the oven.
-  - Turn on the light (if so desired) using the LIGHT switch which is located above the POWER switch.
-  - Place your ready to bake boards on the tray (hopefully located inside or near the oven)
-  - Slide the try into the oven, try to center tray in the depth of the oven
-  - Close the oven door.
-  - The LCD panel should show "Start Reflow" on the top line and the current oven temperature on the bottom line.
-  - Gently press the GREEN button located to the right of the LCD.
-  - The oven will start the bake cycle.
-  - It starts with a PRESOAK phase
-  - Then it goes through a SOAK cycle
-  - Next it run through the REFLOW cycle.
-  - Once it hits the required REFLOW temperature it holds it for 40 seconds (this is when the solder melts and the various SMD parts settle into place)
-  - Once the REFLOW cycle is complete the controller shuts off the heat and opens the door.
-  - Once the oven has cooled to 100C it is safe to remove your board (avoid touching it before this so the solder has time to harden) Note that you need to use tweezers as the boards will be hot... Really really hot... Like burn your friggin fingers even though you should know better hot....
-  - Once the oven has cooled to 50C the oven door now closes. This is a better time to remove your PCB
-  - Close the door and turn off the oven if you are done.
-  - If you have another bake to do then you need to wait till the oven temperature drops to 50C before you can start another bake cycle.
-  - If you want to cancel a running bake cycle then press the YELLOW button (or just shut off the POWER)
-===== Advanced Instructions: =====
+) The LCD touch screen should show this (if not then hit the **HOME** icon on the bottom of the screen).
+{{:tool:oven1.png?400|}}
-Adjusting Temperature - Unless you are an advanced user I suggest you stick with leaded solder paste as it is much easier to work with. For leaded solder I set the temp at 183 degrees. If you change the temperature for a non-leaded solder run please change it back to 183C when you are done.
+) To start baking your PCB select the **Profiles** button.
-Bake Mode - An added feature of this controller is the ability to bake at a set temperature for a set period of time. Handy if you need to heat stress test something or dry out components (please do not try to bake cookies unless you feel you need extra heavy metal in your diet... which you don't....)
+) Confirm you have the correct profile set (if not then hit the **Choose Profile** button and use the green arrows to select the desired profile, then use the **Back Arrow** to return to the above menu).
-==== Caveats/Stuff: ====
+{{:tool:oven2.png?400|}}
-The controller is auto calibrating in that it monitors the heating and adjusts itself if it doesn't match the reflow temperature profile. Typically once it is set for a temperature it will be good and not do any further adjustments. However if it detects the profile is not correct it will stop the bake and show an error message. I recommend you do a test bake with the oven empty before baking your boards to ensure all is good.
+) Open the oven door.
-If you change the temperature setting it will go through a recalibration. This can take several cycles till it dials things in so be aware that you must go through this process.
+) Place your PCB on the metal tray (in the center).
-The unit will not let you do another bake till the oven cools to below 50C. Once the oven cools to 100C you can remove your board (with tweezers or something cuz it will burn you) and then aim a fan into the oven to aid in cooling it down.
+) Make sure you are happy with the parts placement.
-Do not use this oven for heating food. It is full of lead and other heavy metal residue.
+) Slide the tray into the oven.
-Do not lick the inside of this oven (see above). In general I recommend copious hand washing when dealing with solder paste.
+) Close the oven door.
-If the LCD panel does not show "START REFLOW" then use the YELLOW button (Located to the right of the LCD) to cycle through the options till you get to the STARt REFLOW screen. Do not enter the TEST OUTPUTS or SETUP menus as you risk making the device inoperable or worse.
+) Select the **Run Profile** button and the oven will start the reflow cycle. The screen will show the progress on a small graph.
-Do not leave the oven running unattended. While I did install a high temperature cutout (to shut off power should the oven get too hot) this will not stop a fire should your board decide to shoot out flames.
+{{:tool:oven3.png?400|}}
-If you need to cancel a bake cycle just press the YELLOW button.
+) Once the reflow cycle is completed the oven will open the door to allow the oven to cool.
-The oven requires the aluminum tray to sit your PCBs on. If the tray is missing you cannot use the oven. The tray is 1/32" aluminum cut to approx. 6-1/4" x 10-5/8". I have scribbed "VHS Reflow Oven Tray" on it to hopefully avoid it getting used for something else. Make sure you put the tray back in the oven when you are done.
+) Once the oven has cooled to 100C the oven screen will say it is OK to remove your PCB Note that you need to use tweezers as the boards will be hot… Really really hot… Like burn your friggin fingers even though you should know better hot...
-If you find the tray getting sticky (with flux) then use some Isopropyl Alcohol and a cloth to clean it. Make sure the alcohol has dried before using the oven.
+{{:tool:oven4.png?400|}}
-=== More Stuff: ===
+) Once the oven has cooled to 50C the oven door closes. This is a better time to remove your PCB.
-Unfortunately the current software version does not let you store several temperature settings (and associated calibration data). It is open source (Arduino Leonardo based) should anyone feel like getting involved. This would avoid the re-calibration the oven will go through when you change the temperature.
+{{:tool:oven5.png?400|}}
-I rigged up the oven light using an old glass fuse and a bright LED. I'm not 100% sure it will be able to take the heat so let me know if you have noticed it no longer working.
+) Close the door and turn off the oven if you are done.
-There are various thoughts on thermocouple placement. While having it contacting the board may be ideal this doesn't work very well in practice. Having it in free air near the board seems to work fine. Try not to muck with it.
+) If you have another bake to do then you need to wait till the oven temperature drops to 50C before you can start another bake cycle.
+===== Advanced Instructions: =====
+**Bake Mode** - An added feature of this controller is the ability to bake at a set temperature for a set period of time. Handy if you need to heat stress test something or dry out components (please do not try to bake cookies unless you feel you need extra heavy metal in your diet… which you don't….) Use the Bake button to open a menu that lets you select a temperature and duration
+==== Caveats/Stuff: ====
+Touch on the temperature reading to change it from C to F (or back again)
+The unit will not let you do another bake till the oven cools to below 50C. Once the oven cools to 100C you can remove your board (with tweezers or something cuz it will burn you) and then aim a fan into the oven to aid in cooling it down.
+Do not use this oven for heating food. It is full of lead and other heavy metal residue.
+Do not lick the inside of this oven (see above). In general I recommend copious hand washing when dealing with solder paste.
+Do not leave the oven running unattended while baking. While I did install a high temperature cutout (to shut off power should the oven get too hot) this will not stop a fire should your board decide to shoot out flames.
+If you need to cancel a bake cycle just press the **STOP** button on the display
+If you find the tray getting sticky (with flux) then use some Isopropyl Alcohol and a cloth to clean it. Make sure the alcohol has dried before using the oven.
 Feel free to contact me if you have any questions/comments/complaints/whatever.
@@ Line 80: / Line 98: @@
 Here are some tech pictures should you have your geek on (and really, why would you be reading a thread on a reflow oven if you didn't)
-{{http://vanhack.ca/doku.php?ns=tool%3A&image=tool%3Areflowoven1.jpg&do=media}}
+**Inside Wiring:**
+{{{{:tool:reflowoven1.jpg?nolink|}}
-http://vanhack.ca/doku.php?ns=tool%3A&image=tool%3Areflowoven2.jpg&do=media
+Some IR Views Showing Heat Dissipation (cuz I had access to a FLIR camera)...
+Front:
+{{:tool:reflowoven2.jpg?nolink|}}
-http://vanhack.ca/doku.php?ns=tool%3A&image=tool%3Areflowoven3.jpg&do=media
+Back:
+{{:tool:reflowoven3.jpg?nolink|}}
-http://vanhack.ca/doku.php?ns=tool%3A&image=tool%3Areflowoven4.jpg&do=media
+Tray (door was opened after a bake cycle showing pretty even heating):
+{{:tool:reflowoven4.jpg?nolink|}}