DIY Reflow Oven and why Open Source is amazing!

[@UnexpectedMaker]

Great job Colin! I'm glad you found a prob that finally worked! I can't wait to see what you reflow first :-)

[@tablatronix]

Those screw in thermocouples are used for furnaces, so they are for high heat changes, like hundreds of degrees C, if you remove the cover its just a normal k type floating in the middle, so there is an airgap, hence they are terrible for normal use, but you can just pull that off and reuse it. Those thermocouple amplifiers have no filtering, stick a 10nf cap across the thermocouple terminals and the noise (gnd) should clear up.

[@tablatronix]

might need 100nf, I forget check the datasheet I think it says it

[@Chickey]

Brilliant thanks, will try that.

[@JohnHansknecht]

Glad you enjoyed making this. I used a commercial ramp-soak controller that can be purchased for $30 and is entirely powered through the mains.

[@Chickey]

Interesting option, do you have a link. Thanks for taking the time to comment.

[@JohnHansknecht]

@@Chickey just go to AliExpress.com and search for any ramp-soak heater controller. There are a thousand variations. Then use a solid-state relay of 20Amp or higher for taking the output of the controller to pulse modulate the heaters.

[@Chickey]

@@JohnHansknecht Hi John, It's not an avenue i'll go down myself as i'm happy with my setup but thanks for the info for others.

[@AdamWelchUK]

Great adaptation Colin. Glad to hear your oven is working well.

[@KilianGosewisch]

seeing you under this video, coincedence? I THINK NOT

[@AdamWelchUK]

@@KilianGosewisch are you researching reflow ovens? I wonder why ;-)

[@KilianGosewisch]

Hehe. Usb c smd freedeck without daughterboards for the displays ;) but pssst

[@RandomTorok]

I ran into a similiar labelling problem while building a weather station. I ordered a BME280 which will do temperature, humidity and pressure. I ordered them from Amazon and they cam labeled with BME280/BMP280. When I got them I tried getting them to work on an ESP32 but could not get them to show humidity. I kept trying different scripts and one of the scripts detected the device and told me that I was using a BMP280. This sensor only does temperature and pressure. I ordered anohter set of sensors from a different supplier and this time I got BME280s. However, it's still labelled BME280/BMP280. I guess this is so they can design one PCB and configured it as they wish.

[@electronash]

I NEED to do this soon. I bought a cheap toaster oven for about £20 on eBay, but that was last summer. lol I only just bolted in the solid-state relay the other day. Just need a controller now. I'm probably going to use a JYEtech "oscilloscope" board as a controller, as it already has a fairly nice LCD on it, and STM32, and is dirt cheap.

[@electronash]

btw, with an external controller, I am a tiny bit worried about relying solely on the opto isolator in the SSR itself. I think I'll add an extra opto to mine, just to be sure. Otherwise, if something in the SSR fails (and they're not always built so well), it should give you extra protection from getting zapped while using the controller board. Best not to take any chances with mains safety. ;) I was going to try to build the controller into the side compartment of the oven too, but I'm sure it does get too hot, and is too much hassle to try to insulate the chamber etc. External controller sounds like a good option to me, especially with a DIN plug or whatever added to the oven.

[@Chickey]

Got mine last year as well lol. I had the same thoughts re putting the controller in the oven but then decided against it because of heat. I checked the temp where the SSR resides and it stays relatively cool but defo one i'll be keeping an eye on. I think that is a general rule of thumb with a reflow oven anyway in that it should never be left unattended and always monitored.

[@electronash]

@@Chickey Oh, for sure. I'd NEVER leave the oven unattended either. If the controller or SSR goes wrong for some reason (or even the thermocouple), then it could definitely cause a fire. I'll be watching it like a hawk once I get it running, and then unplugging it from the mains as soon as it's done. lol

[@electronash]

I worry whenever I hear people leaving a 3D printer running overnight while they are asleep, when it's in the same room / building, and not in it's own workshop / garage. Even then, I'd be wary of doing that, although I realise some prints can easily take more than 12 hours. I guess having a decent smoke detector near a 3D printer would be wise.

[@Chickey]

Is the JYEtech board as a base for a reflow oven already a thing or a project your going to do yourself? Just looking at the kits they are very reasonably priced. Could be tempted to try one as an actual oscilloscope lol

[@paultargett5211]

Glad I'm not the only one who's remixed one of Seon's designs! Nice vid!

[@Chickey]

Ah cool which design did you remix Paul?

[@paultargett5211]

Colin Hickey I did a remix of the samdMangler. I already had a clip case for the chip so took the designs but had that instead of his qfp footprint.

[@cormacjames5579]

Hi Colin, absolutely love your work! I was hoping that you had loaded your pcb design and BOM on the github repository for the reflow master. Ive looked and can't seem to find it there. If possible are you able to upload it as I'd very much like to follow in your footsteps and have already orded the dev board and screen.

[@Chickey]

Thank you for the kind words and yes i fully intend to publish it and pop it onto github along with a bom as well. Been meaning to for ages so shall make sure do get it done this week :-)

@@Chickey I'm also looking fireward to it. Did you upload it already? 😁Great job, love it!

[@paulbyerlee2529]

I was also hoping you had a gerber for the wemos

I bought an "Adler AD 6003" with 9L and 1000W. Let's see how it performs.

[@Chickey]

How did you get on with your oven?

@@Chickey Need to finish some other stuff first, but the parts are there at least. 😉 I will do a short video when I'm done. In some weeks I think. photos.app.goo.gl/NWT6DhHpWLvJUdnBA

[@BrianLough]

Awesome work!

[@maxwellrobin9324]

Hi! I wanted to see if you uploaded any of the code or project files anywhere for us to take a look at. Thanks!

[@TheDrdoom666]

Nice work Colin, It would be nice to see some sort of temperature mapping of the oven in operation. I would like to know is what type of fumes you will you be exposed to from this activity. Great post, always so interesting,,,,,Keep them coming dude.

[@Chickey]

Hi Doom, There are different profiles available on the software depending on the solder paste being used. I shall have to post a video of the oven in operation to show the mapping of how close it gets. Re the fumes i'd actually not given it a load of thought, it's something i'm conscious of with normal soldering as the fumes are a lot more visible. Will have to make sure it's being used in a well ventilated room just to be sure, maybe not the kitchen lol

[@ChunkySteveo]

Awesome work! Let's see what you can bake?!!

[@Vod-b4n]

thank you!

[@Chickey]

You're welcome!

[@happyIMB]

Hi, very interesting video. What is your oven model? I am looking for something similar

[@Chickey]

Hi it was from aldi in the UK, called an ambiano www.aldi.co.uk/ambiano-black-mini-oven-with-hob/p/081978202531502

[@photo-art-thomas-klee]

Hi Colin, very interesting work, can the circuit also be built with an ESP-WROOM-32?

[@CrankyCoder]

Nice work :) Im going to be following in this same vein soon. Right now, mine is very dodgy. I have to hook my laptop to the arduino to get the temp (aka, no screen yet) lol

[@Chickey]

The weird thing I need is an m8 nut but with a thin machine screw type thread so I can secure the thermocouple. Looking at what others have used I’m curious if I should have just used the one from my multimeter and tape it to the wire shelf inside.

[@CrankyCoder]

@@Chickey I ended up with a diff thermistor like you did. mine doesn't have the threaded piece like yours, but it's exposed like the tip on yours is. Detects the changes in heat WAY better.

[@dph9885]

Dude you sound like you're making excuses because you're using someone else's code... "why reinvent the wheel?" "xxx is a way better programmer than me anyway" - the absolute best coder knows when to code nothing at all ;) Lovely job.

[@abidibrahim]

Is your version of PCB publicly available on github?

[@Chickey]

Sorry not at the moment, need to get a few things tidied up.

[@joshuafleitell5186]

@@Chickey poke. put it up even if its broken. beautiful thing about git is that someone else can fork, fix, and merge :)

[@Magic-Smoke]

Nice Job! I’m in the middle of doing the same thing!

[@amtpdb1]

How did you get the chip programmed? I purchased a j-link mini and must have the settings wrong in the software as I can not get it working to the software. Also the software in arduino will not compile. I found that some of the libraries called out have been changed and or deleted since new arduino software software has been changed. I have also found 3 different bootloaders that adafruit called out, which one did you use? When you added the program on to the chip with the arduino ide, what board did you call it and what did you call out as the programmer. Thanks for any help. Great video.

[@Chickey]

The module i used has a usb connection so i used that via the arduino IDE. It's nice that it's all built in.

[@triton7333]

Hello, after a long Time, do you want to share your Project on GIT ??

[@Chickey]

Hi Yes i shall put it up very soon.

[@triton7333]

@@Chickey that sounds very good, thank you

[@seanocansey2956]

Reflow a grilled cheese

[@Chickey]

It would work, precision toasting lol

[@edwins2595]

Is he speaking English?