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  • zencuke commented on Color Me Blue's instructable DIY IPhone Case6 days ago
    DIY IPhone Case

    maybe it is just the iphone. I’ll try on my mac when I get home.

    OMG Instructables is so loaded with advertisements and links to other projects that I cant find the Instructable itself. Too bad. This one sounded interesting.

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  • zencuke commented on Yonatan24's instructable Build Your Own Drill Press for FREE!7 months ago
    Build Your Own Drill Press for FREE!

    Hey overreaction! Even high quality commercial tools aren't perfect. Every tool has errors. There are things it won't do but unless you have amazingly steady hands this tool is much better than freehanding with a power drill. How good a tool you need depends on the application. If you want to make professional quality furniture you probably need a commercial drill press. But there lots of less critical projects this tool will do quite well.

    This is an excellent instructable in all ways but one. I know everyone does it on instructables but I wish you hadn't called it free. That is misleading and basically dishonest. I guess everything is free if you already own everything needed. In your sense I could make a free diamond ring in a gold band if I already had a $10,000 diamond and a $600 gold band to start with but to call that free is a lie. It would still be a $10600 diamond ring. The honest cost is the cost someone reading your instructable would need to spend acquiring needed parts if they don't already have them. This is a good low cost design but it isn't free.

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  • zencuke commented on tbeseda's instructable Per-i-Sight: MacBook ISight Periscope9 months ago
    Per-i-Sight: MacBook ISight Periscope

    The single mirror results in a mirror image.

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  • Electromagnetic Fidget Spinner Accelerator

    Very clever. Thanks. I'll make one tonight. Of course you have just reinvented the electric motor.

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  • zencuke commented on 24Eng's instructable TDCS Thinking Cap1 year ago
    TDCS Thinking Cap

    However I would rename it something like "Absolutely simple but completely functional TDCS Thinking Cap." or "Anyone can make this TDCS Thinking Cap." Hopefully that would attract the people that would benefit the most. Especially since that is where you invested most of your effort. Might as well get credit for it.

    You did a great job of making it clear to anyone. If a beginner came to me for advice I would direct them here.

    Also even though I basically know how to use a soldering iron I'm no electronics wiz. Until I saw the schematic I had no idea there was such a thing as a current limiting diode. I knew about the voltage limiting zener diode. I learned something useful. Versatile these diodes. Thank you.

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  • zencuke commented on 24Eng's instructable TDCS Thinking Cap1 year ago
    TDCS Thinking Cap

    I think you mixed up two instructables:1) A nice guide to making low budget electronic circuits.2) Building a simple tDCS device.Unfortunately the title suggests it will be #2. But details of tDCS get swamped in the other Instructable. A circuit diagram would have been nice. This is a great article for anyone who doesn't own a soldering iron but a waste of time (I'm not going to read 72 steps, most of no value to me) for those who do. I suggest renaming the article to attract the reader it was written for.

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  • zencuke commented on DoyceC's instructable Arduino Drill Battery Adapter1 year ago
    Arduino Drill Battery Adapter

    Feedback. Good concept but I was a bit dissapointed. I am not much interested in pretty 3D printed cases. I wanted to see electronics. There are 8 pins on my battery. Do you have any idea what they do and how to use them. I suppose this data will come as the project progresses.As far as the box is concerned I suggest you make it smaller. I think you are using the charger as a model. The battery is large already and space is usually limited on a robot. Try to keep it within the limits of the battery itself wrapping itin fact I would probably design it as less of a box and more as a plug. I see a small white version in one picture. I think that is a better design.

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  • zencuke commented on lingib's instructable CNC Drum Plotter1 year ago
    CNC Drum Plotter

    Nice design. Some enhancement suggestions:1) Add pins for continuous feed paper and let the drum push it back and forth. Then it would draw images as long as you wanted. I used to draw images 10 feet long by 11 inches wide on a continuous feed plotter. You would need to add some rollers to hold the paper against the drum both to keep it from lifting off the pins and keep the paper tight under the pen.2) Replace the pen with an Exacto knife and you have a vinyl cutter.

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  • Timekeeping on ESP8266 & Arduino Uno WITHOUT an RTC (Real Time CLock)?

    @Eric Brouwer The 4th method for a network device like esp8266 is to look up the time on the network. There are a bunch of ways to do that but the most common way is to use NTP (Network Time Protocol) and ask the ntp server pool (pool.ntp.org.) That is what your desktop computer does. I'm sure there is an instructable for it. Google "esp8266 ntp time) certainly shows lots of examples.It is a simple piece of code.

    For example I made a simple digital clock with the Adafruit Feather Huzzah (their fancy esp8266) and a 4 digit 7 segment display feather wing. No RTC, no battery. Just a little software to make NTP requests. It is ALWAYS right. The only problem is that NTP returns UTC time. Timezone correction needs to be added to the software (using the Timezone library) but only if you want to display the time to a human in their own timezone. Most devices use UTC internally and only convert to local time if/when a human needs it. UTC is always correct everywhere in the world. A common variation is to primarily use your method (millis() with a correction factor) but automatically re-calibrate current time and correction factor once in a while with NTP.

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  • zencuke commented on dave5201's instructable How To Hide a Wall Wart Transformer1 year ago
    How To Hide a Wall Wart Transformer

    Here is a wifi switch that is a nice example of the proposed design strategy. The design has an esp8266, a power relay and a USB charger all on one one compact board all packaged inside a sturdy ABS case. The only change I would make is to pot it or glue it shut in manufacturing. ttp://i.ebayimg.com/images/g/w-QAAOSwHMJYEEU4/s-l...

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  • zencuke commented on MadScienceHacks's instructable $2 vacuum sealer Life hack1 year ago
    $2 vacuum sealer Life hack

    Very nice. Simple, cheap and easy to do. Perfect instructable. I'll definitely try it.Another way you can use it for small things is to install this on a bigger bag, maybe permanentlly with glue or something. Then put the item in a smaller ziplock bag. Close thecseal partly and put it inside the big bag. After pumping the big one finish sealing the inside bag through the sides of the big one. When you release the seal on the outside one the inside one will stay sealed. This way there is no tape covered hole in the small bag to accidentally pop open if something goes wrong.I mostly use this trick for things I want reseal after using some of it. I don't trust tape in the freezer.

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  • An inexpensive IoT enabler using ESP8266

    Nice project. I have been doing something similar which is of course why i like it. Great minds think alike. ;-) I prefer MicroPython on the esp8266 but that is a matter of style. Rather that use an external USB charger I added a 5v power supply which is basically the guts of a USB charger without case or connectors. You can get them for a couple of bucks each on ebay, BangGood and the like. That will be my new standard for powering my projects. I'm tired of a gazillion wall worts all over the house and want everything in one box, especially the wifi switch because 110 was already going to the relay anyway. I didn't want two power cables for a single wifi switch.I have my first model working but my strategy has changed. I just discovered the Itead Sonoff product line. They have several ...

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    Nice project. I have been doing something similar which is of course why i like it. Great minds think alike. ;-) I prefer MicroPython on the esp8266 but that is a matter of style. Rather that use an external USB charger I added a 5v power supply which is basically the guts of a USB charger without case or connectors. You can get them for a couple of bucks each on ebay, BangGood and the like. That will be my new standard for powering my projects. I'm tired of a gazillion wall worts all over the house and want everything in one box, especially the wifi switch because 110 was already going to the relay anyway. I didn't want two power cables for a single wifi switch.I have my first model working but my strategy has changed. I just discovered the Itead Sonoff product line. They have several versions. I'm using the "relay switch only" version which I got for $5 each. At that price it was 1/3 the cost of all the individual parts I put together and it was already assembled in its own custom box so I didn't have to worry about the risk of dealing with 110V in design or build. If you are impatient you can buy one of these from Amazon for $12 with two day delivery.The Sonoff is almost exactly the same as my design: esp8266, relay to control 110V and with the digital power powered internally from the 110v; except it is all on a single small PC board with a nice compact and strong custom case. Of course they have their own software which connects to their own cloud service. I didn't even try it. I immediately downloaded microPython. The PC board has connection points for the ESP8266 serial which gives you complete control. I discovered that there are a bunch of open source projects that support MQTT on the Sonoff. Now that I know how to search for it I notice a bunch of Instructables doing various things with the Sonoff, Of course there is one from Itead which might be biased but there are others. The original version I bought didn't have a temperature sensor but the two most recent TH versions do. They'll do humidity as well so the humidifier is another device that will get MQTT control in my house. I haven gotten the new versions yet but I will. At the low cost for the Sonoff, the ability to use open source software and the ability to leave 110V issues in someone else's hands I will no longer be building these myself. I have plenty of other projects to do. It wasn't a waste doing it the hard way first though. I learned a lot about the ESP8266 and MQTT etc. so now I know how to use the Sonoff effectively. I run the same software on both. The only change is the relay is on a different pin.

    One other comment. My current strategy is one computer per application and then use MQTT to connect everything together. That means I will probably not need more pins so I probably won't add an Arduino to the mix. Smaller is better. If I connect two devices I will use one ESP-<??> board for each sensor and/or switch unless they obviously work together closely. Once MQTT is up and reliable that changes the way I think about most of my home projects. MQTT can service completely independent threads in different topics. It is more like LEGO with mix and match parts. I'm running mosquito on my Mac but that will probably move to a Raspberry PI eventually. My next Mac will be a laptop so it won't be available 24/7 like my current Mac.

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  • ESP8266 WiFi temperature and humidity sensor

    Nice project. By the way ESP8266 does support SSL. Why do you say it doesn't? Maybe it has been added since you posted this? Maybe it is the firmware on the esp8266 serial boards you use that don't support it? Lua and Micropython firmware both support SSL on esp8266.If I do this I will likely use an I2C sensor instead. Then you don't need the Arduino. I'll probably use an MQTT server. It is rapidly becoming the standard for simple sensors. I wouldn't be surprised if EasyIot isn't based on MQTT anyway. They are a little short on technical data on their web pages so it is hard to tell. Anyway thanks for the Instructable..

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  • zencuke commented on Constructed's instructable Cheap and Easy Micro Quadcopter1 year ago
    Cheap and Easy Micro Quadcopter

    Unfortunately this has become the new standard for Instructables. "I paid only $X bucks plus what I had on hand. Of course I'm a pro so I have an unbelievable amount of stuff in my junk box that I don't have to buy but will cost you plenty big bucks."Just ignore the cost promises. For all Instructables! Assume they are garbage and move on. It is not worth the hassle. After all it is not a lie. That's probably what he spent. And it is about what someone else would spend if they have been doing quads for a while. He didn't promise that's what it would cost a beginner. Besides he spent his own time and effort to post this. Instructables are free and provided by volunteers. Maybe you think his salary should be cut or something?It is a great Instructable otherwise. The "cheap&...

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    Unfortunately this has become the new standard for Instructables. "I paid only $X bucks plus what I had on hand. Of course I'm a pro so I have an unbelievable amount of stuff in my junk box that I don't have to buy but will cost you plenty big bucks."Just ignore the cost promises. For all Instructables! Assume they are garbage and move on. It is not worth the hassle. After all it is not a lie. That's probably what he spent. And it is about what someone else would spend if they have been doing quads for a while. He didn't promise that's what it would cost a beginner. Besides he spent his own time and effort to post this. Instructables are free and provided by volunteers. Maybe you think his salary should be cut or something?It is a great Instructable otherwise. The "cheap" and the "easy" parts are both right, compared to a full size quad anyway. And we benefit from his experience. Even with his experience he had to try twice before he got it right so we don't have to, It would have probably taken me at least 3 or 4 builds to get it right so it is a winner for me.

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  • zencuke commented on bangnhipham's instructable Book Press From Scratch1 year ago
    Book Press From Scratch

    Obviously an insider only Instructable. From the pictures I have no clue how this is used. It is probably quite useful if you already know how to do bookbinding.

    This may be partly a web page error. The last image that shows it in use didn't appear until I posted my comment. It could still use a few more pictures of the different steps. For example it is not clear which edge has glue.

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  • zencuke followed makjosher1 year ago
      • Rocket Boat
      • Simple Sheet Metal Brake: No Welding
      • Cardboard Kitchen Cupboard Organizer
  • zencuke commented on makjosher's instructable Rocket Boat1 year ago
    Rocket Boat

    Hydrofoils would be fun but I suspect they wouldn't get you much. The point of hydrofoils is to get a fat old displacement hull up out of the water instead of pushing through it. A flat bottomed planing hull like yours pretty much skips on the surface already. Most of the displacement drag is gone. It would sure look cool though. Just the idea of a rocket powered hydrofoil gives me chills.

    I noticed you mention keels in the video. On a sailboat keels are in the center because their job is to keep the boat from sliding sideways without changing the direction the boat is pointing. Different problem. Especially when sails are pretty flat (going up wind) they push sideways as well as forewords. The keels job is to fight that. Without it a sailboat would point one way and slide another. On the other hand the rudder's job is to control direction so it is all the way in the back. To keep your boat going straight you want a rudder that points straight. A rudder is not just for turning.

    Beautiful job. It encompasses two of my favorires, boats and rockets. I love the family tradition part as well. Minor suggestion: if you are looking for straight line stability from fins they should be as far back as possible, behind the center if drag for the rest of the boat. That is why rocket fins are way at the back, often mounted at an angle so they can trail behind the body. Think about arrows. The feathers are at the back. If fins are too far forward they can make it more unstable instead of less. Of course in your design the fins are now dual purpose so that complicates things. The hold-down force needs to be up front. I never needed fins on my boats but I never tried to rocket power them either. ;-) I put propeller engines on a rear mounted pylon, like a Florida swamp buggy. M...

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    Beautiful job. It encompasses two of my favorires, boats and rockets. I love the family tradition part as well. Minor suggestion: if you are looking for straight line stability from fins they should be as far back as possible, behind the center if drag for the rest of the boat. That is why rocket fins are way at the back, often mounted at an angle so they can trail behind the body. Think about arrows. The feathers are at the back. If fins are too far forward they can make it more unstable instead of less. Of course in your design the fins are now dual purpose so that complicates things. The hold-down force needs to be up front. I never needed fins on my boats but I never tried to rocket power them either. ;-) I put propeller engines on a rear mounted pylon, like a Florida swamp buggy. Mounting the engine up in the air helped keep the bow down as well. I'd be afraid to try that with those powerful rockets engines though. Something to think about.

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  • How To Make Cheap PVC Project Enclosures and Boxes

    Anyone that makes things with PVC should know this link http://makezine.com/projects/make-30/stain-pvc-any...for a fantastic finishing option.

    Thank you, thank you, thank you. What a great idea. Even better than the low price is the ability to make exactly the size I want.I make things with PVC but didn't know square PVC existed.

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  • zencuke commented on makeblock2016's instructable Make a XY-plotter With Makeblock1 year ago
    Make a XY-plotter With Makeblock

    No matter how many times I read this it just looks like a cut and paste from the MakeBlock instructions that come with the kit. This is just a glorified advertisement pretending to be an Instructable. Author makeblock2016 is wasting our time.

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  • MAX CUT 2 Circular Saw Crosscut & Miter Jig

    Very nice. Thank you. A simple to use safe and fast cross cut tool is one of the most important tools in a shop. 90% of the cuts most people make are 90 degree cut offs on long boards. This Instructable puts a good quality one within reach of beginners. I'm not a beginner and have both a miter/chop saw and two cross cut sleds for the table saw but I plan to make one of these for when I'm not in the shop. The chop saw can be moved but it is heavy. I'll probably follow @DinoD5 lead and use clear acrylic for the saw track. I always like to see what I am cutting mostly to make sure the wood is flush against the fence. It is so easy to get a bit of sawdust behind it and make a slightly un-square cut. I'm also looking to make a track saw so I might use the same tracking mechanism for both get...

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    Very nice. Thank you. A simple to use safe and fast cross cut tool is one of the most important tools in a shop. 90% of the cuts most people make are 90 degree cut offs on long boards. This Instructable puts a good quality one within reach of beginners. I'm not a beginner and have both a miter/chop saw and two cross cut sleds for the table saw but I plan to make one of these for when I'm not in the shop. The chop saw can be moved but it is heavy. I'll probably follow @DinoD5 lead and use clear acrylic for the saw track. I always like to see what I am cutting mostly to make sure the wood is flush against the fence. It is so easy to get a bit of sawdust behind it and make a slightly un-square cut. I'm also looking to make a track saw so I might use the same tracking mechanism for both getting an accurate cross-cut and rip saw from the same circular saw.

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  • zencuke commented on reglisse44's instructable The Drone Pi2 years ago
    The Drone Pi

    Dude. Do some research. That question has very little to do with this Instructable. It is reasonable to expect the author to help with people doing his project but if you want to do your own version there are better resources. Tru a multiwii forum.

    It tells the MultiWii which direction is up by detecting the acceleration of gravity.

    For a raspberry pi 2 vs 3 issue you should probably find a raspberry pi forum. The people that could help may see this but may not. In a raspberry pi forum everyone will know about pi issues. Try googling hostapd.conf if that is your problem. That should get you to a forum where it is discussed.

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  • zencuke commented on David_Dragino's instructable Dragino LoRa GPS Tracker2 years ago
    Dragino LoRa GPS Tracker

    This is really cool. I really appreciate the Google Maps integration. That could be useful for lots of things. But could you gives us a hint about how "long" long range is. "long" is sort of vague. Order of magnitude is close enough. I followed the "Scarlet Knight" which did the first trans Atlantic crossing by an untended underwater glider and they did daily tracking maps with google maps and I always wondered how they did it. I know they used a satellite phone modem for communications but never understood the Google Maps part. Thanks.The following are all long range to someone.a) > 100 ftb) > 1000 ftc) > 1 miled) > 100 milese) > 1,000 milesf) > 10,000 milesg) > 10 light years gets you out of the local group.a) Lo111

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  • Change a Mountain Bike Tube Without Tools

    This is great. Just one thing to add. If you coat the inside of the tire with baby powder this method gets much easier, even for street bikes. The tire doesn't stick as aggressively to the rim. It also allows the tube to slip more freely reducing the chance of a fold which can cause leaks. I've been doing this on my street and touring bikes for years. I hate using tools because they always pinch the tube often causing a second (or third or...) flat.

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  • Get Cleaner, Better Cuts With This Circular Saw Tracking Guide

    It doesn't have all the features of an expensive Festool Track saw but you don;t have to trade your first born to own one either.

    This is such a good idea. Thanks. I have a "cheap $20 guide" as bobthemoron suggests and it is quite tedious to use. First it is too flimsy. Besides tear out the biggest problem for me is keeping the cut clean as you awkwardly reach across the 4 foot width. I hate cutting plywood sheets. Doing it on a table saw with minimum side tables is worse. Having a guide which fits my saw and keeps it snugly on track will be perfect. Beautiful.

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