Hello, I am looking for a module that could adapt to my Wanhao D12 to do laser engraving. Do you have any modules to recommend to me? or examples of production! Thank you for your answers

Do you pour up and dip? Apply everything manually? Mount the bottle upsode down and touch the nozzle?

I’d love to embark on my first real maker project. I have a vinyl fence with a door, and I want to build a contraption which will close the door remotely.

My first thought was to have an arm (connected to a perpendicular shaft going into the ground) swing using a strong motor to push the door closed.

Trying to figure out where to begin. I guess as the simplest possible prototype, I can somehow connect a piece of wood or pvc pipe to a motor and see if conceptually I can push the door closed.

Any advice is appreciated!

Thanks!

Just as it sounds. I have cosplay for a project in December an d I want to add a fog/ mist feature. I have had my eyes out for Spoonmakes.com to restock but I haven't seen anything. With the flood of builds online. Does anyone have any that they would recommend or have used yourselves?

We are pleased to announce that our faire is scheduled to take place on June 8th in for our 7th Maker Faire ni Port Jefferson Village, New York, USA (on Long Island). We are looking for makers in the nearby areas who are willing to participate in the event by exhibiting, conducting workshops or delivering talks. If you are interested, please respond to our Call for Makers. Feel free to reach out to me if you have any questions. Have a great day!

Call for Makers: https://longisland.makerfaire.com/call-for-makers/
General Page: https://longisland.makerfaire.com/
Instagram: https://www.instagram.com/makerfaireli/

https://preview.redd.it/qr5o6towh1yc1.png?width=1654&format=png&auto=webp&s=fea54d79a4e9368dc745ab1b9c4c11a8f567b1e8

Long ago in rec.crafts.metalworking, I uploaded a sample Comma Separated Values file for a materials list that could be sorted on shape, dimensions, material, etc. The idea was that one could quickly locate a needed part in junk that is normally thrown away. One example: You might need a couple plastic domes measuring about 90 mm dia. x 45 mm H. to represent the eyeballs of a well - known cartoon Homer. McFlurry cup lids might serve, no?

Now, my good friends on the newsgroup immediately leapt to the conclusion that I wanted to inventory all their junk boxes and make their booty widely available. That never was my point. Though I agree that could be an eventual outcome. Anyways, may I please have the benefit of your opinion about 'The Circular File'?

Thank you.

Feel free to share pros and cons about your favorite glosses and glues and I'll add a link to the docs as I get started on them. :)

I'm going to make them editable google docs so they can be collaborative.

Hi folks!

I'm just learning to create my own pcb which I want to use for my BentoBox (its actually a simple fan which should scrub polluted air from my 3d printer into active charcoal und a hepa filter). But I want to do it a smarter way with a gas sensor. If the sensor detects pollution it should spin the fans on.

My project is based on this:
gallowayk/FanControlForBentoBox: VOC sensing circuit and program for automatic fan control of the Bento Box 3D printer filter system. (github.com)

Now I'm pretty happy with the result but I can't validate my approach since it's my first pcb ever. I have some experience with electronics but not with pcbs. ChatGPT helped me a lot so understand the entire process and how some of the devices work and how I should wire them up.

https://preview.redd.it/4rxfj6ierzwc1.png?width=1080&format=png&auto=webp&s=26c88381187a2a36ae13f6ce712f50f80c8b59bb

My circuit diagram:

https://preview.redd.it/tlw44epfrzwc1.png?width=1080&format=png&auto=webp&s=44bf0602219ea3446b22dc66936e9f6b249f9e2c

Essentially I want to control the 24v fans with a relay via one GPIO of the pico (actually I'm thinking of ditching the Pi and replace it with an ESP32 in the second revision). But I'm pretty unsure about the relay itself and the voltage regulator.

For the Pi or ESP32 I need to step down the 24v to 5v. Is the `LM2596GR-5.0` a good way to go and correctly wired up? IMHO the relay should be wired up correctly but I'm unsure.

Regarding the LEDs:

1. The power led `SMD-LED-1206-PACKAGE-RED` should be on when 5v is applied and the device is on. Because it's a red led I have to use a 100 ohm resistor to regulate it. Am I right?
2. The second LED is a blue one which should be on when the fan is activated. Since it's a GPIO net with 3,3v I dont have to use a resistor?

Do you have some other advices for me the improve the pcb?

Thank you in advance!

I have an old Ssscat air puffer that is supposed to scare the cats. This old one has given up the ghost -- something in the motion sensor or the circuity is no longer working, and I can't trace what it is.

Ssscat now only sells a newer version which is a piece of junk and doesn't work at all.

So I started playing with the old one and realized I could drive the solenoid that pushes down on the air spray nozzle by applying about 6V across it. It works great! So I could lie in bed and scare away the cats when they come scratching at my door in the morning by pressing a button.

The only issue is, I don't want to trail ten feet of wire between my bed and the door.

What's the very simplest way I could drive a switch or relay by a remote control? Butchering some cheap existing remote control toy would probably be preferable to doing some Arduino stuff.

Edit: Or! (maybe I should have started with this...) What's the easiest way I could close the circuit with a new motion sensor?

https://preview.redd.it/bloz0yj4zwwc1.jpg?width=4032&format=pjpg&auto=webp&s=809fdd3701938a88aa94463bffd8de32240bfa43

Hallo Zusammen Ich würde gerne bei einem Microsoft surface go 3 das Display ersetzen, ausgebaut ist es bereits. Nur ist es leider kaum möglich ein neues zu kaufen. Ich frage mich ob es eventuell möglich ist ein Go2 Display zu verwenden. Kennt sich da jemand aus? Danke für die Hilfe

Hello, where can I find extension for this type of wires ? Thanks in advance

Looking for high-tack foam tape. I have yet to find one that will stick under real tension. The last tape I tried to hold my Roku on the bottom of my TV let go even after being clamped in place for twelve hours.

I’d like to control my KVM using my raspberry pi, so I am looking to reverse engineer the control board my KVM came with. It plugs into a dedicated usb port on the switch using a USB connection. I’m thinking I’ll try to read from it using a serial console, but for all I know it’s just shorting data cables or something simple. Any tips before I start experimenting?

My backup plan is to just solder jumpers onto the button leads and simulate button presses using GIOP but I’d like to try the more elegant approach first.

Years ago (possibly in Maker magazine, but a search can’t find it again.) I saw a DIY how to make smaller ones converting old record turntables and coffee cans. Can anyone point us to a tutorial? Needed for an upcoming community event

I have an automatic coop door that swings open/closed on a timer or light sensor. Its motion in the closing direction is limited by a metal stop but all that prevents it from being pulled open is the friction from the motor. It takes a little effort but a determined raccoon could do it. What I'm looking for is a good automatic way to secure the thing when it shuts and release as the hinge actuates to open. I would rather find a way to do it mechanically but I could probably splice something into the power supply for the motor too. Either way this kind of hardware isn't really my area so I was hoping for some ideas.

I want to make Proto-Putty but everywhere they specify that it should be Silicone 1 and here in Sweden they don't use the 1 and 2 labeling so I have a hard time figuring out what silicone to buy. I've found a lot of information that contradict each other so any help is highly appreciated.

Hi all, hoping someone here can offer some advice. I’m trying to make my own version of the Grovemade Matte Desk Pad, which is natural linoleum backed with cork. So I have a sheet of linoleum (natural, not PVC) and a sheet of cork, and I need to bind them. I am looking for an adhesive that I can apply at home that will hold strong in the long term, and I’d like it to be flexible enough that I can roll up the desk pad like a poster if I ever need to move (or, as I hope to do in the future, when I make more of them for friends). In an ideal world it would also be as non-toxic, eco-friendly, and low odor as possible.

The option I’m most strongly considering right now is Tufting Nation’s TN-100 natural latex rug glue, which based on the description sounds strong, durable, flexible, and eco-friendly. However, I’m wondering if others have better suggestions? I have very little experience with adhesives and want to make sure I’m not missing something that would be markedly better for the job.

I really appreciate any & all input! Thank you!

I remember on YouTube seeing someone who made a desk with two different tops, similar to this murphy bed. You could fold the top table down, and the bottom one with all your stuff stays horizontal, so you can leave stuff on it, and get a whole seperate new work area.

Does anyone know of anything like this? I believe it was many years ago, so idk what the odds are, but it was so cool, now I want to make one.

I'm looking for a stiff wire I can use for making my pinball spiral lift. It has to be rigid enough to hold up to the constant weight of pinballs traveling up it. It also should be soft enough for me to form with hand tools.

I know it's a tough ask but I'm wondering if there's a good wire for that. Specifically what material and what diameter is the sweet spot?

Hello all, I am looking for a source of HDPE (or UHMWPE) sheet (25-50 mm thick) in Europe. All of the sources I can find are in the US or China. Any suggestions?

https://reddit.com/link/1c6vr28/video/vaklg9lzd6vc1/player

Wasn't positive if this was the right subreddit for this, but I could use some advice for getting this motorized blinds system to work. I designed it in Fusion 360, but I'm mostly a software guy so a bit novice with the mechanical stuff. It'll ultimately get mounted to the wall once I get it working consistently but right now I'm having this issue in the video where the gears are slipping a ton.

For context I've tried the following:

• making everything have a tight, secure fit (helped a ton, though it's possible the servo gear's attachment could be improved)

• changing gear ratio from 60/24 to 66/18 to increase torque (helped a little)

• lengthening the teeth on the gears (helped a little)

• giving the servo a separate power supply and increasing the voltage on it to 6V (helped a little)

Any other advice would be greatly appreciated. Happy to share any and all model files as well if interested, especially once it's dialed in. Also please ignore how poorly printed the back enclosure plate is, I was in a hurry and need to tune my PETG settings

I need some smallish containers for storing acetone and paint thinner etc.

Plastic is fine, but I would like a screw top lid so it doesn't leak.

Anything from 4 to 8 oz would work. I'm having trouble verifying that a. It won't leak and b. that it is hdpe so it won't dissolve.

I was going to just get plastic lids for mason jars but ran into the same problem.

Any suggestions? I need like four.

I just got out of my home and on my own and I used to always watch the maker channel. I first found it on Pluto and then watched it on my Samsung TV plus. Now that I am on my own, I can’t find the channel because I don’t have a Samsung TV.