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Hey I've done the same thing! Twinsies! :) There are two new fan control products that use ESP32 being made and will be soon available on the shop page. I think you are right, you could also take 3V3 directly from the SATA connector.

Thanks Des! The OpenFAN ships pre-programmed so when you receive it you should be good to go. There are two (public) GitHub repositories on my profile that you can try. One runs OpenFAN software and there is another one dedicated for creating profiles for Unraid (HDD groups and curves based on temperature etc). I don't have any vides on how to set up the software but it's a good suggestion. Maybe I should make a "tutorial" in the future.

I would really appreciate a short video about how to set this up and get the most from it in unraid. It could really help sell these for you too I guess if folks saw a simplified way to do this. Management of heat in servers is a very important thing, but blasting fans at full speed is noisy and inefficient so this system has real potential. Thanks 👍

Thanks! I will add it to my (ever-growing) list of videos I want to do. :) Setting and using OpenFAN should be fairly straight forward, especially for technical users. But I agree that having a video guide explaining how things work and how to set-up everything would be nice. Only minor complication is that you can integrate it and use it in so many different ways, so keeping the guide concise while covering all use-cases could be an interesting challenge. :)

This version only has a desiccant, heater and fan for air extraction. Monitoring in+out humidity can also be useful to know what is you "baseline" vs what is filament sitting at.

I am working on getting these to be available on my web shop... :) In the meantime you also have the option of building one yourself if you can't want.

@@SasaKaranovic thanks! Im about to try building one. Also in my country is hard to get components like that

@@3dhustle let me know if you need any help or get stuck. I would send you a sample but I already sent out all the extras I had laying around.

Thanks bajojohn! I plan on releasing new version of the design that allows use of off-the-shelf components to build very flexible/custom dry box. Stay tuned! :)

I am on vacation right now but I might have a board laying around at home that I could send you. So send me an email to remind me to take a look when I'm back. I also might add this sensor to the web shop to make it easier for people to get one. :)

@@SasaKaranovic Thank you for your video. Please let me know if it would be possible for me to purchase this sensor for my filament extruder. I live in US.

I also really want to buy one. -Sweden

You could find any pin-to-pin compatible module and use it instead. There is also a newer version of this project coming out soon. It will have many improvements compared to this one, so stay tuned/subscribe so you don't miss when it comes out. :)

Thanks! I don't know how useful this would be to people in the community but on paper it sounds like a great idea. And it would be fairly straight-forward to add it to the filament diameter sensor. So you get the best of both worlds.

@@SasaKaranovic Let's simplify the project by stepwise execution. 1st step: build a device thats just measures the linear advance of the filament and offers an output interface. That alone would be great. 2nd step: measure the rotation of the gears of the extruder, using an optical encoder for example (which many common 2d paper printers use) for example. 3rd step: compare both and provide a digital output, an analog signal or just a lighting alarm LED as minimum when significant slippage or skipped steps are detected. Do not underestimate the importance of such a device to improve 3d print quality!

Pozdrav Cosa!

@@SasaKaranovic i tebi druže veliki poz!

Let's add it then! :)

Thanks! I'm glad you like it! I mentioned in the video that I really don't have a use for filament diameter sensor, but I made one just for fun (and also potentially help people who have the need for one). :) I don't use Klipper/Happy-Hare (yet) but I think it should be fairly straight-forward to integrate it. So I am happy to offer support if anyone wants to take a first stab at it.

Thanks! I already answered your question on Github and then saw you posted here as well. All the manufacturing files are available in the GitHub repository. You can also order preassembled boards from my shop. They would be identical except latter option comes with preassembled and tested board, preloaded with firmware and USB-to-motherboard cable included. The USB-C version would not affect the functionality of the board at all. But maybe in the future revisions I will swap the connector.

Hey @ogsandwitch! Thank you for the great feedback, I really appreciate it! The ESP32 is still be alive and globally available, so it should not be an issue. And I'm not sure about the enclosure but the general idea should be applicable to other filament driers. Maybe you missed it but I have mentioned in the comments that I am working on another revision that uses only off-the-shelf components. The hardware part is already done, it just needs a video now. :) As you noticed, this video is more about "how to mod the existing filament dryer" which helps if you have one, but it might be more helpful to show how to build one from scratch. My main concern at the moment is making sure people understand that his machine is very cool, useful and fun to build, but you need to exercise caution and common sense because it can get very hot. Same as you would not consider your oven as a "toy" (even though it's fun to make cakes in it) it can still get very hot or burn the house down.

@@SasaKaranovic Thanks for your response! Neither JCL nor PCBWay will source the part, noting it as "unavailable;" this is after a sourcing request on the part, on the backend, they contact all distributors to find the part, when you get this response it means no distributors have stock. Another tell-tale sign of an out-of-production part is when digikey shows the "by request only" message, which is present for this part. There is only one distributor I can find with stock. I posted an issue on your repo, it seems the ESP32-WROOM-32E-H4 (note "32E" and "H4") is the successor to ESP32-WROOM-32D (4MB HIGH TEMP). I however cannot confirm the pinout because the every distributor has a broken link for the ESP32-WROOM-32D (4MB HIGH TEMP) datasheet (even the distributor with stock has a broken link). However, when matching the newer ESP32 cad to your board, the footprint aligns. I have improved your BOM in CSV format that is easier to import into JCL/PCBW and has a separate entry for each header and have a transposed pick and place CSV that is compatible with JCL/PCBW, will push a PR Also curious why in your pick and place file you have set the 3x2 programming headers for "bottom," would be easier or cheaper to manufacture if all components were top-side.

Hey @XHULIOZ! I would highly recommend if your mouse is still in warranty (or even if it isn't), maybe it's worth reaching out to Asus and explaining your issue and checking if you can upgrade to the wireless charging one? Modifying a mouse to have wireless charging is not that complicated, but at the same time you risk potentially damaging your mouse if you don't know what you are doing or make mistakes. Also depending on the coil, how you add it to the mouse, the charger etc. your range might be great or it might be charging only in one spot. So consider all of this before making the modification. And if you do end up modifying your mouse, let me know how it goes or maybe even document it and share with others who might have similar issue in the future.

@SasaKaranovic I wish I could but I live in Albania and its not available at all Will definitely let you know if I go through with it

Great question! Before I answer, I feel compelled to warn you; please make sure you understand what you are building and how it works. Heaters are potentially very dangerous. Not only can they burn items around them and cause fire. They can also cause nearby materials to melt and produce toxic gases. Be smart and stay safe! With that said. There has been some interest in this project so I am working on a new revision that uses all off-the-shelf components. There are a lot of options for heater element. You can look at 12V/24V heaters. You can use 12/24V polyimide heaters and attach them to piece of metal. There are heater+blower options... Obviously each one comes with cons/pros. And again, I can't say this enough, make sure you know what you are doing!

@@SasaKaranovic Thank you for the thorough explanation!

Let me know how it goes! I assembled it myself. It's a very simple design so it's pretty easy to do.

Hey @Magut-gj6wr! Do you mind creating an issue for this on GitHub and attach PlatformIO output? It's easier to collaborate there.

@@SasaKaranovic thanks, I'll try it

Just to clarify, these units are already manufactured and ready to go. You can order them from a web shop. The fan controller chip has several valuable features like rpm/pwm drive, PID tuning, integrated push-pull stage etc. The Pico2040 should have enough PWM outputs. I might consider this for some of the future revision. Although Pico-only design would require a lot more development and testing. And at volume savings of those two ICs compared to development time; especially if you consider that most people will buy one or two, not 20 of these, the price delta becomes negligible.

You should be able to build something similar with any microcontroller assuming you have enough PWM outputs and GPIOs for input.

Thanks! Filament extruder sounds like a very interesting project! The PCB in the video is designed from scratch. At the moment it is not available on the web shop, mainly because I thought nobody would want to buy one. :) The design is open-source open-hardware so you should be able to just order a batch from any of the online PCB shops. Let me know if you need any help :)

You could do that but I'm planning on building an even better (optical) sensor for this purpose. Stay tuned! :)

​@@SasaKaranovichey sasa with methode will you prefer to mesurment optical? Laser, linear photo arrays, AI camera dia dedection?

There are obviously a couple of different ways I could do this... Since I plan on releasing it as open-source open-hardware project (same as this one), I'm still considering which one would be the most useful to the 3D printing community. There is no point in making a sensor that is extremely expensive or very difficult to make, because at that point someone could just buy an industrial/commercial sensor and call it a day. :) If you have suggestions or something you would like to see, feel free to let me know! Also subscribe if you don't want to miss when the video goes live. :)

Thank you! :)

Thank you! :)

Thanks for asking! I am not sure if there is any demand for such "product"? Maybe because I don't really have the need for this sensor... But if there is enough interest I can find a manufacturer to build a small batch and add them to the store.

Honestly I have no idea. I have not looked at it. I know there are some other companies that copied the design and are selling it as their filament drier. :) But in the end, I'm just happy that the average filament dryer got a bit better... I can't take credit for it but I like to think that I helped a little. :)

@@SasaKaranovic Anyways great videos. I watched almost 4-5 videos last night before sleeping. All of them were well paced, informative and edited nicely. Thanks for making them and sharing with us. Also, i drive (subscribed).

Hey! I'm glad you found it!

Hey! This is a pretty simple design so any PCB manufacturing shop would be able to manufacture it without any issues. A couple of people posted on GitHub which PCB vendor they used and how much it cost them.

I agree. It could be very useful for demanding/challenging filaments or if you really want to "chase microns" on your prints. So far my experience is that most of my filaments are relatively dimensionally accurate, or maybe I'm not printing designs that are that demanding. Or maybe my standards are low. :)

I am not a huge PC RGB user so I had to Google that. :) The hardware is definitely capable of driving these. I would just need to add a header. :) At the same time, it may be better to adhere to the Linux philosophy of "Make each program do one thing well. To do a new job, build afresh rather than complicate old programs by adding new "features". So maybe an OpenLED driver? :)

@@SasaKaranovic I am not a computer expert like you're but I have an asus motherboard that uses Aura software that controls the lights I have plugged in using my Argb slot on my mobo. My fans are all different sizes in my case so I was looking for a controller hub that used PWM slots and Argb so I can have all my fans/lights for them plugged in and able to control each of the fan's speeds separately. Which I didn't think would be a big deal in 2024 but having trouble finding something like that except the controller you made here, since most things for sale appear to be "hubs" for people who have multiple of the same kind of fan.

This should not be a problem since I have 80mm, 120mm and 140mm fans in one of my setups and as long as they are 12V PWM fans, you can easily control them. For the ARGB lights; it might make more sense to create a separate project that controls the ARGB lights (and other common ones) so we don't cross-contaminate products with unnecessary features. At least in my mind it's better to have a really good fan controller and really good LED controller, rather than mix both of them in one product and have bloated HW/FW/SW. :)

Thank you! Your voice has been heard! I make no promise other than I will try to make an optical filament sensor as well at some point. :) I feel that making it "price competitive" to WInFiDEL/InFiDEL would be potentially a hard thing to do. But maybe that's part of the challenge. :)

Hey! Thank you for asking! OpenFAN supports only 4-Pin (PWM) fans. Mainly because the price difference between the 3-pin and 4-pin fans has become pretty negligible. Also the cost/complexity of driving 3-pin fans compared to 4-pin fans is relatively high.

Thank you! Absolutely! I use it with FanControl on my desktop PC (there is an OpenFAN plugin). And for my server machines (Unraid, Proxmox etc) I use the provided OpenFAN docker image.

Thank you! I am glad you liked it! Let me know those two turn out!

Thank you! I am glad you liked it! :) There are two temperature sensor connector on the board (that were designed in but they are not populated by default). I would suggest maybe re-evaluating if you really need this approach. For example if your sensor is in the middle of the case and saying "Temperature is 28C", that does not really help because your CPU/GPU/HDD could also be at 28C or it could be at 60C. I think it's far better approach to use the actual CPU/GPU/HDD temperature reading and based on that adjust the fan(s) curve.

@@SasaKaranovic So... can the board access to those temperature readings from the mainboard? That's interesting

Great question! OpenFAN is a fan controller but it also has an API which allows it to integrate easily with other applications. For example you can take a look at FanControl software that does fan curves and temperature readings etc. and then there is OpenFAN plugin for it which allows you to use OpenFAN with your existing FanControl setup. Or another example, if you have a server/virtual machine/hypervisor, you can easily integrate OpenFAN and allow any piece of software to control each individual fan through the API.

@@SasaKaranovic Fantastic! Thanks!

@@SasaKaranovic If it could still have the function to work off its own temperature sensors, it would be ideal for watercooled PCs where the only useful control variable for the fans is the water temperature. the controller could basically run completely autonomously once the fan curve is set wich would be great

Thank you!

Thank you! I'm glad you like it! You could use two OpenFANs to control up to 20 fans. The board does not support flow sensor but with modified firmware it could. Although I would strongly recommend using a dedicated flow/temp sensor and then using OpenFAN to individually control as many fans as you need.

Thanks for the feedback! I really appreciate it! Sorry to hear your uUSB header tore off during cable management... that sucks. Feel free to send me an email and maybe we can salvage it. :) I will look for a better solution for the next revision. USB-C and through-hole connectors were an option but for some reason at the time when I designed it, the pricing of "custom" cables and the connector was almost 2-3x compared to the uUSB. But maybe it's worth it...

@@SasaKaranovic Thanks for the assistance on this! To future people looking at this product and considering purchasing it, know that your not just looking at a really unique product, but a great team behind it! So often we see stories about companies being horrible, so here I want to shout out to a company that is awesome, standing behind their product and customers! We need more people like you! Cheers

Thanks for sharing your setup/tip! I wish my server MBO was that fancy... Mine has only one extra fan header. But I basically have a very similar setup with the OpenFAN except I have 10 zones that I can individually control. For me it helps a lot to separate individual cpu/gpu/hdd/ssd cooling fans so I can keep my media server silent (which is in my living room, at least for now :) Also there is now an official Unraid plugin for OpenFAN. So you could use some fancy automation or just good old batch/cron scripts to keep things cool. :)

@@SasaKaranovic - Congrats on the project! Great to know OpenFAN has been realeased on unraid. Is there anyway of utilizing the software with the standard PWM headers on a motherboard?

Thanks! The idea is that you can use OpenFAN with a PC that has any number or no PWM headers at all.

Thanks! To be fair, everything is a smoke machine if you operate it wrong enough. So no arguments there. All connectors are keyed and polarized so it would be very very hard to reverse polarity. But polyfuse is not a bad idea. At the same time keep in mind that polyfuse would not magically protect against all user errors, especially if you take into consideration the scenario where each fan can draw 0.3-0.5A and you have 10 of them, at which point you are drawing 3-5A in normal operation.

@@SasaKaranovicSometimes bad things just happen and it is unfortunate that such events could also destroy the whole fan controller which could also cause other issues down the line. Just for inspiration you can read about Noctua NA-FH1 fan controller in their home page (search for "NA-FH1 technical backgrounds"). They write about some dangers with fan controllers in general and how most fan controllers are not safe especially when they are powered via SATA power connector. This may give you some ideas what could be improved in the future versions

Thanks! I did not use a thermistor, I used a digital sensor. But whatever your sensor is, you want it to be in contact/touching the heater so your reading is more accurate. My heater is running off 12V but I don't recall the peak current.

Ok, thx

You *can* individually set PWM or RPM for each of the ten fans.

Thank you! I used Fusion360.

ESP8266 is not compatible out of the box but obviously the firmware could be modified to work on ESP8266. Although I would highly recommend using ESP32. Thank you for the suggestion. I am working on new version of the camera slider and I will focus on the firmware loading part to make sure it's well documented.

I was able to install PlatformIO and get the firmware loaded. I can even connect to Wi-Fi, but I suspect I am missing something about getting the web page loaded in. I just get a page not responding. I can see the IP and port 80 is open. Thanks for the help

Thank you! If you have the time and steady hand, I would recommend sticking to wires and jigs to make the cube. You can come to the PCB approach at any time.

Thank you! I appreciate the kind words! I guess the project was not a complete failure, the cube works and it looks decent. It's just, I know it can be much much better. But that will have to be another project for one of the future videos! :)