loading
44Instructables279,246Views2,762CommentsAustralia
I like to improve myself and things I find :) Learning new things every day is next to impossible but I still try - only a working brain can work. I have no special sector to cover, electronics, electrical stuff, 3D printing, restoring old clocks and furniture. Whatever sounds interesting I try it. In my spare time I love to fly big kites, go fishing or simply go bush in 4WD to find a good fishing spot. Active spam fighter!

Achievements

1K+ Comments Earned a gold medal
10K+ Views Earned a bronze medal
  • Write an app with permissions to access the local storage, messages and Wifi.After that worry on how to display the text.

    View Topic »
  • Just get a standard drill chuck for the tool/attachment.Or if you only use one or two different tool sizes buy the chuck insert that fits.

    View Topic »
  • True 8bit photo engraving on chinese laser cutter - maybe a worlds first?

    The assignment for the display type in the configuration files.Standard procedure on Marlin firmware.

    View Instructable »
  • Downunder35m commented on Ruby Laser's forum topic Diy police siren replica2 days ago

    I don't think so and if you use tunnel diodes they will die sooner than you can the sound.

    View Topic »
  • Downunder35m commented on 10wellsmit's forum topic Where to get ammonium nitrate2 days ago

    Instant cold packs as you find them in the supermarket, survial store or camping supply store.Downside is that most don't use Ammonium nitrate in them anymore as it poses a huge shipping risk.

    View Topic »
  • Downunder35m commented on kefflon's forum topic diy welding mahine cable size?2 days ago

    Temp depends on the insulation.Enamelled wire can tolerate about 150°C without problems, normal PVC insulation about 60°.And yes you need a suitable container but the oil is an insulator, so no electrical problem here.

    View Topic »
  • You need even depth when working with a wood chisel - something a hammer drill can't offer you.And before you weld stuff consider usung an adapter in the drill chuck ;)You can also grind drown the stem than goes inside the chisel handle to make it fit into the chuck....

    What technique??The hammer goes in the direction of the machine - always.And as long as you can't get the chisel flat onto the surface you will only hammer parallel lines into the material.Ever wondered why a planer uses rotating blades instead of hammering ones ? ;)

    View Topic »
  • Downunder35m commented on kefflon's forum topic diy welding mahine cable size?3 days ago

    Should be no problem, the thicker the better in terms of getting hot - which needs to be checked during use to avoid the insulation melting away.For additional cooling, if required you can consider submerging the tansformer in mineral oil.

    View Topic »
  • Downunder35m commented on AK K298's instructable UNAVAILABLE4 days ago
    UNAVAILABLE

    Maybe a check why this ible is soooooo empty?

    View Instructable »
  • The motors in these drills are standard types, compatible with the Mabuchi heavy duty models if not identical.That means (assuming the rest of the drill is fine) you can change the motor for something suited for your voltage.Available from 6 to 48V with various speeds and torque ratings.You just need to pull the sprocket or worm drive off the old motor shaft and push it onto the new one (matching the distance from mounting points of course).

    View Topic »
  • Xiang Jin Textiles in the lower business district of Bejing.Then there is Ülibün Cotton in Instanbul, but AFIK they only do bigger orders.There are a few companies in South Africa too.....

    Sorry forgot the prices...Usually around $3 - $4 for single color, depending on shirt style and size.Between $4 and 7.50 for multi color prints.Around 8 bucks for Flouro colors.Minimum order is usually 10.000 units, but Ülibün only starts if you need 25.000 or more shirts.

    View Topic »
  • Assuming they still use standard 3.5mm jacks, I would use one of these.Of course you would need to check if the two speakers are actually wired onto the corresponding left and right channel connections on your jacks!If that is the case then a simple adapter will give power to them from a normal audio source.In case both speakers go onto he same connection ring on the jack you have to replace one of them so you can wire the channels correctly.If you need to keep them the way they are now you need to make a little adapter to avoid cutting the cables.

    View Topic »
  • Problem is the voltage drop and power draw from the battery if depleted.You need at least 13.2V on the terminals to properly charge the battery.And without knowing if the battery is really fully charged after the drive you risk damaging the battery in the long run.The only cheap "solution" that might work is if you use a step up converter right at the end of your charging cable.Adjust it to about 14V and if no current limitation included in the converter add a suitable resistor so you won't draw more than what cable and converter can supply.Not pretty but will work for a while.

    View Topic »
  • The SD goes onto a shield or is connected with a serial connection.You won't get a SD working over USB on an Arduino.

    View Topic »
  • Tell me about, but there are thing stupid people just have to try with their new toys.Now that I would recommend it though LOL

    View Topic »
  • MDF is one of the worst material you can feed your laser ;)It is more glue than wood, which makes the cutting a painful exercise, not to mention the fumes....The thickest I tried so far in MDF on my 40W laser was 5mm thick.After failing like no tomorrow I had to use a fride to make a half decent cut through it.Might be due to the fact that the stuff was rated for wetroom use though....Oh, the fridge...I salvaged the compressor, sompe copper tubing and the long capillary tube for the metering.Soldered a piece of that thin stuff onto a 5mm tube and that went into flex PVC down to the compressor.Resulted in close to 30PSI and once directed into the cutting area properly I was able to cut it in 3 passes.Still the neighbours were not happy with me about that, my exhaust system smoked out the...see more »MDF is one of the worst material you can feed your laser ;)It is more glue than wood, which makes the cutting a painful exercise, not to mention the fumes....The thickest I tried so far in MDF on my 40W laser was 5mm thick.After failing like no tomorrow I had to use a fride to make a half decent cut through it.Might be due to the fact that the stuff was rated for wetroom use though....Oh, the fridge...I salvaged the compressor, sompe copper tubing and the long capillary tube for the metering.Soldered a piece of that thin stuff onto a 5mm tube and that went into flex PVC down to the compressor.Resulted in close to 30PSI and once directed into the cutting area properly I was able to cut it in 3 passes.Still the neighbours were not happy with me about that, my exhaust system smoked out the entire block ROFLUnless you need extreme details (which would be lost due to the thickness anyway) I would use a fine bandsaw for this task.At least you would end up with a straight and even cutting edge on the MDF instead of a badly charred funnel...

    View Topic »
  • Get a dual battery charging system as used in most 4WD's or caravans.You want to charge from the alternator or existing battery - for either option you need a dual battery isolator and charger.Look it up on Ebay, some are quite cheap.If you wire it like you plan there is a great risk that nothing works or that something goes up in smoke.For the long distance you also need really thick wires to prevent the voltage drop.Might be easier and cheaper to put a solar panel on the trailer.And you should use deep cycle batteries as a starter battery is designed to give a lot of juice for a very short time but otherwise it does nothing while the car is running.A deep cycle battery can be discharged much further without damaging the battery.

    View Topic »
  • With little to no time left you won't have a chance to get a dongle working.Serial communication through BT or Wifi is not a big problem, we had a topic about that a few days ago.A user needed to send long numbers and failed, basically the same as sending Gcode...Using a WiFi enabled SD card might be an option too....

    View Topic »
  • Had a similar problem with images in one of my ibles, maybe other are affected too, not sure.Image were hosted externally and although the actual link works fine in all browsers the Ible only showed a blank space.Had to upload the images to my collection here to make it work.As for the links, change to HTML mode and do a text search with the browser for "HTTP" "youtube" or whatever is certainly included in all your video links.The HTML editor is messy and it is very easy to overlook links there.If you see a blank space with a frame around it then there will be a link in the HTML view for sure.I guess it is a problem with HTTPS here and linking to external HTTPS sources for links.

    View Topic »
  • Downunder35m commented on bnnorman's forum topic Irritating Site PopUps1 week ago

    Are you talking about advertisements?If so the best option would be a pro account...

    View Topic »
  • Downunder35m commented on Purple Chez's forum topic messing with a clock1 week ago

    Easiest would be with a little DC motor and the right sprocket to match the gears of the clock.

    View Topic »
  • Downunder35m commented on Downunder35m's instructable The Repulsine Project1 week ago
    The Repulsine Project

    At the moment not really that good.Had to move house and now I am missing the space for my workshop.Right now neither the 3D rpinter, nor the laser cutter is set up due to the lack of space :(But I am working on getting a bigger place to stay.

    View Instructable »
  • The Forever Light - a better Joule Thief to recycle your old batteries

    Thanks for the heads up!Seems to be a problem with Tinypic and how images are embedded here now.I have uploaded them now directy into my image library here and added one too, so all should be back working now.

    View Instructable »
  • Did you bother to check Google?The Arduino playground?I guess not as otherwise you would noticed the existing Arduino shields and circuit boards with this IC and found the corresponding shematics for them on the Arduino pages already....

    View Topic »
  • Certainly not on 8bit as you need to process the camera image for the tracking.Even the sound location can be tricky as at short distances exact timing is really critical.But even if it would be possible on a little Arduino the programming would be a nightmare....

    View Topic »
  • Downunder35m commented on crazyg's forum topic Continued rejection1 week ago

    When it comes to contests you need to be careful.Sometimes the entry requirements are quite specific and although your intention might be the best the actual project might still be outside the contest criteria.But as with everything these days, errors happen - even at Instructables.If, after double checking the criteria are matched, you still think your rejection might be wrong then contact the support by Email.Or better still send a nice PM to our helpful Seamster so he can check and might be able to explain why it was rejected.Sometimes an Instructable is rejected because it is just a remake of an older one to be able to enter a contest - I did not check yours for dates and possible contest entries, so no offence!!But for example your electric igniter IMHO would have been correct to b...see more »When it comes to contests you need to be careful.Sometimes the entry requirements are quite specific and although your intention might be the best the actual project might still be outside the contest criteria.But as with everything these days, errors happen - even at Instructables.If, after double checking the criteria are matched, you still think your rejection might be wrong then contact the support by Email.Or better still send a nice PM to our helpful Seamster so he can check and might be able to explain why it was rejected.Sometimes an Instructable is rejected because it is just a remake of an older one to be able to enter a contest - I did not check yours for dates and possible contest entries, so no offence!!But for example your electric igniter IMHO would have been correct to be rejected as it is not created to make something else and just lights a flame.Sometimes the fineprint is the culprit for not being clear enough, sometimes we are to blame for not reading it all or misinterpreting it.

    View Topic »
  • If in doubt you should find switch symbols on your new switch.Next to each dot, representing a contact point there should be a number.Near each contact on the switch you will find these numbers.What you see on the switch symbol is the normal state of the switch, so if a contact is shown closed it means in the neutral position this contact will have a short.The open contact will have the short when you move the switch in the corresponding direction while the other contact of this block will open at the same time.

    View Topic »
  • Last time I did it it went like this:Start a new collection, add existing Instructables to it, sort if required and post an image and some meaningful text for the description.When clicking on publish I got a preview and from there I could click on "Yes, publish my...."

    View Topic »
  • Should work the same way if you get the right type with two integrated switches.

    Check for rotary cam selector switches in the industrial supply area.Something like this for example:http://www.ebay.com.au/itm/Kraus-Naimer-Style-Rota...If you go to a real shop they can show you different models.Some come with "drums" in 1, 2, 4 or even 8 poles, others come in 1 or pole by means of push in switch blocks that are replaceable, meaning you can use NO or NC blocks.

    View Topic »
  • Downunder35m commented on MrB12's forum topic Microphone to speaker amplifiers1 week ago

    Assuming you use an electrec mic:Google some simple microphone circuits, most only need one or two resistors a few resistors and tiny capacitors.Connect the output to an amplifier that is of similar simple design.

    View Topic »
  • Stuff like this is usually spring steel and next to impossible to bend without a proper vice and a blow torch.A good salvage for example comes from these pop up camping beds, clthes dryer or these electric fencing posts that you stick in the ground.Heat until glowing red, bed as desired and then cool down in old oil or water.

    View Topic »
  • Might be true but does not change the fact that it is not really these days to make an app that actually works as intended on all platforms and devices.You would want the look to be optimised to the capabilities of the device in question, same for features...I have no real clue about Android or IOS programming but I doubt it would be an easy task and end up in an app of massive size.Considering devopment costs for such a task comapared to just using a good browser that gives the content optimised for the device already....Even if you would make it a paid app to cover the costs: Why would anyone pay for it if the browser works for free?And a free app would need to pester you with pop ups as a free user and most likely as a paid user too at some extend.Translating the database contents of...see more »Might be true but does not change the fact that it is not really these days to make an app that actually works as intended on all platforms and devices.You would want the look to be optimised to the capabilities of the device in question, same for features...I have no real clue about Android or IOS programming but I doubt it would be an easy task and end up in an app of massive size.Considering devopment costs for such a task comapared to just using a good browser that gives the content optimised for the device already....Even if you would make it a paid app to cover the costs: Why would anyone pay for it if the browser works for free?And a free app would need to pester you with pop ups as a free user and most likely as a paid user too at some extend.Translating the database contents of all that Instructables has to offer to something that can be used through an app with the same ease as the browser is IMHO next to impossible....

    Did you consider to just use the browser?I guess one of the many reasons to abandone the app was that modern phones usually already hires screens and fullsize web browsing.After all, the app would not do more than redirecting the HTTP/HTTPS to your screen....

    View Topic »
  • Downunder35m commented on degrooty's forum topic Electroactive Polymers1 week ago

    Well, all is explained with enough detail there....

    View Topic »
  • Not worth the time.Everything WII is encrypted and need certificates, the drive itself is not meant to be used as a standard drive either.Means you not only need to create the required hardware but also a suitable driver.Considering what is involved I highly doubt any 8bit CPU will handle that task.Far cheaper to buy a normal USB or SATA drive.If in doubt one of the old Hitachi ones with RAW reading and writing capabilities assuming you have the software and drivers to use such features.

    View Topic »
  • Downunder35m commented on degrooty's forum topic Electroactive Polymers2 weeks ago

    On what exactly?The list of EAP's is quite long....

    View Topic »
  • 1. Write in proper sentences as i simply refuse to read this mess.2. Include all relevant details as noone here is fully clairvoyant.

    View Topic »
  • Downunder35m commented on ChristopherC297's forum topic Capacitor Pin Extention2 weeks ago

    Solder two wires in the holes.Make sure you bend them on both sides of the board.Solder the capacitor onto the wires.You can also wind some wire onto the capacitor legs and then solder all in...

    View Topic »
  • Downunder35m commented on ambientvoid's forum topic Help picking DC on/off switches2 weeks ago

    If you want to see bad than check those mains adapters that come with chinese devices on a regular base.There is a reason thy are added for free ;)The contact between the actual prongs for your power point and the adapter springs on the other side is made by touch!No screw, no clip, no spring mount...Once the top and bottom are screwed together you might be lucky enough to get contact for a few weeks, or until you are dumb enough to try something above 1000W with them LOOOOLAround Xmas we had 5 house fires in town.Four of them were caused by asian adapters the last by a dumb house owner using over 20 chinese extension boards for the xmas lights.To be safe from the rain he "installed" them all under the roof....When it comes to electronics or electrics that actually need to ope...see more »If you want to see bad than check those mains adapters that come with chinese devices on a regular base.There is a reason thy are added for free ;)The contact between the actual prongs for your power point and the adapter springs on the other side is made by touch!No screw, no clip, no spring mount...Once the top and bottom are screwed together you might be lucky enough to get contact for a few weeks, or until you are dumb enough to try something above 1000W with them LOOOOLAround Xmas we had 5 house fires in town.Four of them were caused by asian adapters the last by a dumb house owner using over 20 chinese extension boards for the xmas lights.To be safe from the rain he "installed" them all under the roof....When it comes to electronics or electrics that actually need to operate properly at all times I won't buy cheap imports.I mean why save 2 bucks on a switch from china if the long term problems cost much more.....

    View Topic »
  • Should be the same image as in your first step.If you change it there the title image should change as well.In any case you can change it (again) when publishing and select a different pic at that time by replacing it.

    View Topic »
  • Downunder35m commented on bretrick's forum topic Mosaics and Lead lighting.2 weeks ago

    I hope you have more luck than I had when I tried some years ago.Main problem is that noone keeps broken things anymore and most places have no clue about stained glass and they bin it anyway.One thing you can still try is to visit the big catholic churches in your area.No, not to pray or get a blessing - ask them who they contact if some of their stained glass windows would need a repair.There are only a few guys left in AU doing these jobs but if you are lucky one is close enough for a visit.You need lots of tiny pieces - what would be junk to them.If you ask nice you might be able to get a few kg in different colors for a slab of beer ;)

    Mosaics are usually done flat and once glued on and the grouting is in they go vertical....If you make the tile adhesive quite runny you can use a drop of hot glue to keep a piece in place and level it, once done (or partially) fill the void with the adhesive.For the lamps you might have a problem as colored, flat glass is often hard to find down here.An old neighbour of mine did it years ago for lamps and such but he already ordered the glass sheets from asia....

    View Topic »
  • Downunder35m commented on ambientvoid's forum topic Help picking DC on/off switches2 weeks ago

    If you buy from china without any certificates or real safety tests than of course you get what you paid for.That is why some countries still operate shops for electrical supplies that sell stuff tested to the countries regulations - and with warranty.

    As said: a higher rated switch won't harm you.A too low rated switch can fail and overheat.

    View Topic »
  • Downunder35m commented on azizmak's forum topic 5 KW Permanent magnetic generator2 weeks ago

    Any motor will do as long as you don't have any load on the motor.If you need the 5KW output than I suggest to use a 24V / 8kW DC motor.Good luck finding thick enough cables for it....

    View Topic »
  • Downunder35m commented on BaptisteL8's forum topic Is Zipper the right name?2 weeks ago

    Considering they are called zip lock bags in many parts of the world....Working pricinple is the same, one side latches on the other and it is not velcro - so....

    View Topic »
  • Downunder35m commented on ambientvoid's forum topic Help picking DC on/off switches2 weeks ago

    Just take any mains power rated switch that is capable of the amps you need.The voltage does not really matter - it is the AMPS that kill contacts.Biggest difference between good 12V and good 240V switches is the distance between the contacts to prevent arcing at high voltages.

    View Topic »
  • Downunder35m commented on Jason357's forum topic Remote Lockbox2 weeks ago

    One way could work like this:Microcontroller with GSM shield so you can use a SIM card.Digital keypad for code entry.Battery pack for power supply.Small relay style locking bar (like on most cheap safes from home depot).Electronics are in standby mode until a SMS is received.SMS is read and the content used as the match for the code entered on the keypad.If correct code is entered locking bar will be activated to open for a specific period of time.Once the key is put back and box closed a switch in the door will reset the code, so one time use only.In case of network problems or general GSM failure a default code of suffient length should be added to your program to allow access for battery replacement and such things.If that is not secure enough than leave the default code out and use ...see more »One way could work like this:Microcontroller with GSM shield so you can use a SIM card.Digital keypad for code entry.Battery pack for power supply.Small relay style locking bar (like on most cheap safes from home depot).Electronics are in standby mode until a SMS is received.SMS is read and the content used as the match for the code entered on the keypad.If correct code is entered locking bar will be activated to open for a specific period of time.Once the key is put back and box closed a switch in the door will reset the code, so one time use only.In case of network problems or general GSM failure a default code of suffient length should be added to your program to allow access for battery replacement and such things.If that is not secure enough than leave the default code out and use a manual override for the lock bolt with a key.I suggest using an Abloy lock for this purpose and the box to be made from stainless steel of at least 3mm thickness.GSM antenna needs to be on the outside so a proper polycarbonate cover for it is recommended.

    View Topic »
  • Why not use clear silicone instead?Especially in dry cold wether it takes like forever to cure.As for the epoxy, you can cheat : ;)The activator needs to be present with a certain amount to fully cure.But if you thin down the activator with a few ml of acetone or MEK (PVC plumbing primer) the curing time can be doubled.Downside is that the mix becomes a bit thinner but for some applications that can be of benefit.Another option that works really well is LOKA glue as used for repairs on smartphone displays or clear UV curing glue.Put on the lines and place the sheet, once all looks good place in the sun for 10 to 15 minutes to cure it.

    View Topic »
  • How can we help if you don't provide info on the actual problem?You are not expecting that someone here builds your setup and uses a crystal ball to make sure all is correct? ;)

    View Topic »
  • Downunder35m commented on MelPhleg's forum topic Bicycle & Folding Shopping Cart2 weeks ago

    Air hose quick connector and and eye bolt makes for a good coupling.The coupler does the twisting, the eybolt makes it flexible enough for turning and bumps on the road.

    View Topic »
  • Downunder35m commented on bhuvankumar_rbk's forum topic Motors3 weeks ago

    You think correctly as everyone else would have just converted an old mobility scooter....

    View Topic »
  • Downunder35m commented on DavidO242's forum topic Arduino automatic barrier3 weeks ago

    Check the Arduino Playground, plenty of examples for everything there - including code samples.Start with the servo programming then check for inputs, like sensors, switches and so on.Motion sensors work by detecting temperature changes, so I doubt it will work for a toy car, especially if the sensor is not designed for miniature use.

    View Topic »
  • You wouldn't have enough pics of the entire process to make an Instructable out of it? ;)^^ Hint ^^

    View Topic »
  • There is no sensor for detecting screens, so please more meaningful info as otherwise it will be impossible give proper answers.

    View Topic »
  • Downunder35m commented on UsmanK14's forum topic SS8550 D331 Transistor 3 weeks ago

    Next time try to use a more suitable section and you might get get more/better answers ;)

    View Topic »
  • Downunder35m commented on zeepjes's forum topic USB type C3 weeks ago

    1. You can just replace the resistors on the LED strip with smaller ones to make it work on 5V.2. If you need USB than usually it involves a computer - a computer also has 12V available on the Molex connectors.3. USB-C is not really widely available anywhere so I doubt people jump on in just to use it to power a 12V LED strip.No offence but have you considered just using a 12V power supply?If you struggle to solder a few LED's onto resistors to do it manually on 5V I fail to see how you would work it out with USB-C...Don't know where you found you informations but USB-C only provides 5V and a max of 3A.USB-PD is capable of 5V, 12V and 20V with a max of 100W.But if you would have found the correct informations than you would also know that you need some additional electronics to tell the...see more »1. You can just replace the resistors on the LED strip with smaller ones to make it work on 5V.2. If you need USB than usually it involves a computer - a computer also has 12V available on the Molex connectors.3. USB-C is not really widely available anywhere so I doubt people jump on in just to use it to power a 12V LED strip.No offence but have you considered just using a 12V power supply?If you struggle to solder a few LED's onto resistors to do it manually on 5V I fail to see how you would work it out with USB-C...Don't know where you found you informations but USB-C only provides 5V and a max of 3A.USB-PD is capable of 5V, 12V and 20V with a max of 100W.But if you would have found the correct informations than you would also know that you need some additional electronics to tell the port the connected device is actually a battery charger....All this trouble when a Molex connector or power adapter would be soooooo much easier ;)

    View Topic »
  • Downunder35m commented on KenKlos's forum topic low voltage lighting problem3 weeks ago

    Was it working before?Is it charged?

    View Topic »
  • Already half way dead thanks to the big C, and already tried stop using oxygen but it is really hard to train your lungs to ignore it.

    View Topic »
  • Why not use a cheap and standard stepper driver for 4 wires?After all most of these 6 and 8 wire models can be wired to tun as a 4 wire motor.http://digital.ni.com/public.nsf/allkb/C4A024DA9F1...

    View Topic »
  • You need to Google more yourself it seems ;)In terms of toxidiy humanity create far worse than Vinyl-chloride molecules, just check what comes out of old cars at the rear end.Cigarettes are another example but still people buy them.Modern countries banned PVC for certain products years ago, so unless you buy from a cheap importer kids toys for example are no longer allowed to use it.Same story for most of the additives and softener used.Without them you would not have flexible vinyl floor covers and we would still use tapes as noone would have bought vinyl to listen to music.PVC won't burn by itself, only with an external flame present to keep it burning.Above about 160°C it start to release some acetates and chlorides as the material starts to break down.So for quite obvious reason...see more »You need to Google more yourself it seems ;)In terms of toxidiy humanity create far worse than Vinyl-chloride molecules, just check what comes out of old cars at the rear end.Cigarettes are another example but still people buy them.Modern countries banned PVC for certain products years ago, so unless you buy from a cheap importer kids toys for example are no longer allowed to use it.Same story for most of the additives and softener used.Without them you would not have flexible vinyl floor covers and we would still use tapes as noone would have bought vinyl to listen to music.PVC won't burn by itself, only with an external flame present to keep it burning.Above about 160°C it start to release some acetates and chlorides as the material starts to break down.So for quite obvious reasons usage of PVC products if limited to lower temperatures and things that won't come into contact with food.Your guttering and downpipes, drains for your kitchen sink, conduit pipes for cables....If you want to compare the danger when stuff burns check what else you have in your house before screaming that we can't use PVC.I bet your fridge is foam insulated, your wooden furniture covered with varnish and your walls might be painted too, if not than wallpaper is glued on - you think these materials are less dangerous?? LOLThinking this way also means you have no MDF, particle board or any laminated furniture and of course no mattress for your bed....

    View Topic »
  • Downunder35m commented on DDallen's forum topic PVC Post3 weeks ago

    Safety bollards including the rubber bottom plate go for under 20 bucks here new, might be an idea to visit your local work safety shop?

    View Topic »
  • As with the other similar topics:The code monkeys are busy trying to get HTTPS working properly.So check some of them as I doubt they will reply to every single topic already created.For the code monkeys: Maybe someone can combine all these related topics into one or make an announcement to prevent even more of them popping up?

    View Topic »
  • Downunder35m commented on TheWaterDog's forum topic Not able to Publish3 weeks ago

    Is anyone actually checking the latest postings before creating yet another one for exactly the same?This is now number 3 and counting....

    View Topic »
  • You need a suitable LED driver, everything else won't be good enough in the long run.Without a "costant current driver" the temp changes during usage will cause the LED to get a lower resistance.That means more current is drawn, heats up more, more current....

    View Topic »
  • Downunder35m commented on gluckc's forum topic Arduino to control 3V remote3 weeks ago

    I replied to show that your way of doing it won't work so others won't make the same mistake.Check the Arduino playground how to use transistors to switch and control loads.And if you also check Google how to use a 3V voltage regulator you might even get the idea to combine both to make it work.People these days often think a microcontroller will always do what they want them to do, the reality is often far from it.If you really want to learn more then spend some time in the Arduino playground, I still go there to get example code and ideas....

    View Topic »
  • Downunder35m commented on hacknmake's forum topic cant submit an instructable3 weeks ago

    Check the topic above yours (or under yours if someone replied)...Code monkeys are working on the system.

    View Topic »
  • Consider another thing for mobile use on a stick:Aluminium handles are often wide enough to allow to be misused for some Li Ion batteries.You can use their weight to balance the system ;)If you also use a dampened hinge system to seperate handle, lamp and "battery pack" you can swing and move around with it without any weight shifting problems.Check out how these harness systems for the cameras work they use for camera men in rough terrain.Harness takes the weight and the counter weight below the handle keeps the cam stable in almost all conditions.Since you are not dealing with several kg a wrist system as used for powerful sligshots should to the work of the harness.

    View Topic »
  • Downunder35m commented on dandaman1950's forum topic diy pool heater4 weeks ago

    We just tried or better better tried to build a costfree pool heater for a friend of mine.Only a small, round pool, approx 80cm heigh and 1.5m in diameter.List of materials:3 condensers from old friges/freezers, matched in size to the next part3 old windows, still in the frame1 coil of copper tubing, inside diameter to match outside diameter of the condenser coils1 caravan water pump rated for continous use (12V)1 small solar panel with controller to provide about twice the required power for the water pumpSome home made connectors to get the pump onto the copper coil - simple, flexible PVC tubing and cable ties ;)Some old wooden panels or wet room rated plywoodWhatever is missing along the way, like nails, glue, screws...General Idea:Pool heating for free by utilizing solar power to bo...see more »We just tried or better better tried to build a costfree pool heater for a friend of mine.Only a small, round pool, approx 80cm heigh and 1.5m in diameter.List of materials:3 condensers from old friges/freezers, matched in size to the next part3 old windows, still in the frame1 coil of copper tubing, inside diameter to match outside diameter of the condenser coils1 caravan water pump rated for continous use (12V)1 small solar panel with controller to provide about twice the required power for the water pumpSome home made connectors to get the pump onto the copper coil - simple, flexible PVC tubing and cable ties ;)Some old wooden panels or wet room rated plywoodWhatever is missing along the way, like nails, glue, screws...General Idea:Pool heating for free by utilizing solar power to both heat the water and pump it around.How to:The window frames are covered on one side with the plywood or panels.We choose the "outside" as it only left a few mm of free space between glass, condenser and back panel.Holes were drilled to connect the coils and window frames with each other.For ease of later removal we included some quick connectors between them.After placing them in a really sunny spot and connecting them with the PVC tubing we used the remaining copper tubing to make the connections to the pool and pump.It is just easier to work with somthing solid if you want to keep in one place and prevent kinking along the way.The solar panel was placed right next to the former windows and sonnected via a charge controller to the pump as the load.Problems we found along the way that you could avoid:We simply forgot to paint the inside of our window boxes black before putting the condensers in.This meant we had to remove all the screws holding it as well as waiting another day for the paint to dry - thank god they were sliding windows...Pressure and pump....We decided on a caravan water pump or better a 12V water pump rated for continous use and with just 6mm pipe connectors.Was advertised for caravan use when "high demand" is a priority.You want the pump to be able to provide enough pressure so the water actually makes it through the thin pipes without loosing too much flow rate.Without anything connected the pump made a nice 2.5m heigh fountain.Connected to everything the fountain was only about 40cm heigh but still enough for a good flow.Aquarium pumps are basically useless here as they are not designed to provide any proper water pressure, you would need much thicker piping and the pump from and external filter system for this to work.Intake and outlet....For obvious reasons you want to get the water in from the bottom of the pool as it will be coldest down there, especially if you don't have any insulation on the ground.The same is true for the warm water coming back, but here we can simply place it near the outlet of the normal water filter pump.How good does it work?We filled the pool from the tap, so the water was quite cold.Last year and in similar conditions but without the solar heating it took over a week for the water to warm up above 20°C.The concrete underneath is certainly not helping...Three days with good sun and the pool was at a nice 24°C - enough to disconnect the solar panel for a while as noone wanted a hot bath on a hot day LOL

    View Topic »
  • Downunder35m commented on gluckc's forum topic Arduino to control 3V remote1 month ago

    My best idea is that you have no clue what you are doing.Using 5V for a device that runs on only 3V - WHY??Using logic output that might be good for a LED to drive a load directly that might use far more power than even multiple LED`s - WHY??A motor driver as a switch/power supply for a normal load - WHY?There is a reason why people use transistors on the outputs or connect a motor to a motor driver, think about it and you might see why...

    View Topic »
  • That is why people usually start with easier projects and work their way up to more complex programming.And what you want to do is quite complex, even for me if I should start it from scratch.I am almost certain similar thing already exist in 3D printer or CNC programs for the Arduino in one way or another, just need to find it and adapt it to your needs.If you take a standard 3D or CNC setup than the axis home to initialise.From there you can run at any speed you like and the program makes sure the motor won't miss a step.That is the basic start routine you need.From there you need to track the distance or use sensors for it.The speed control can be as easy as a loop checking the distance or steps and limiting the speed with a simple table containing fixed speed values for a certain am...see more »That is why people usually start with easier projects and work their way up to more complex programming.And what you want to do is quite complex, even for me if I should start it from scratch.I am almost certain similar thing already exist in 3D printer or CNC programs for the Arduino in one way or another, just need to find it and adapt it to your needs.If you take a standard 3D or CNC setup than the axis home to initialise.From there you can run at any speed you like and the program makes sure the motor won't miss a step.That is the basic start routine you need.From there you need to track the distance or use sensors for it.The speed control can be as easy as a loop checking the distance or steps and limiting the speed with a simple table containing fixed speed values for a certain amount of travelled steps - or read distance from the sensor.Acceleration control if required could again be borrowed from Marlin, GRBL or Sprinter depending on what suits best.But I doubt anyone here will take the time to do all this for you unless there is a need for it.

    View Topic »
  • Sounds fun, especially considering I have no clue what you mean.I don't get videos to show up when browsing here....Do you have a free account or a pro one?With a free account you get the usual amount of ads and other things....

    View Topic »
  • How do you think this price estimate would work with people from all the world?If you are somewhere in a well populated area in the US or EU you won't have much trouble finding electronics for cheap.Try the same from India, south america or just Australia and you can be lost from the start.If I state the list of materials will be around $30 AU then you can be sure someone in the US can get it for haf the price while someone in Mexico might not even get all the parts required.IMHO the est option is that everyone does some homework first, checking local suppliers and such to get and compare prices.

    View Topic »
  • If you go be the number of steps required you won't need an incoder, just a reliable way of powering the motor without loosing steps.Calculating distance based on the steps and resolution is no problem either.I think the 3D printer stuff for Arduino should give some useful examples about the speed control.Acceleration control and other things are normal procedure here, so it should be possible to find some code and libraries in Marlin or other other projects.

    View Topic »
  • Here is a little tip you can try, maybe it helps you as good as it does me:Most people only use their local Ebay when looking for things.It is convinient as this way all items unavailable in your country are filtered out.Also because most people are unaware that they can use other Ebay sites ;)Especially electronics these days come from China, Korea or Taiwan.Some of their local sellers also work on Ebay and offer products.But of course most won't show up when you do an Ebay search on Ebay sites in restircted countries.Going to an ebay site in the US, Europe or even Australia can provide alternatives you otherwise miss.Small things like a PI are often shipped for free by asian sellers on Ebay, worldwide through their prefered snail mail system.So if you would find a lot these PI's on th...see more »Here is a little tip you can try, maybe it helps you as good as it does me:Most people only use their local Ebay when looking for things.It is convinient as this way all items unavailable in your country are filtered out.Also because most people are unaware that they can use other Ebay sites ;)Especially electronics these days come from China, Korea or Taiwan.Some of their local sellers also work on Ebay and offer products.But of course most won't show up when you do an Ebay search on Ebay sites in restircted countries.Going to an ebay site in the US, Europe or even Australia can provide alternatives you otherwise miss.Small things like a PI are often shipped for free by asian sellers on Ebay, worldwide through their prefered snail mail system.So if you would find a lot these PI's on the Ebay UK site for example then you check for "free international shipping" and in the shipping details (the button next to the item description) for any excemptions to India.If there are none listed you could just buy the thing if the price converted into local currency is a good one but I recommend to double check with the seller.Sometimes they only list in a certain country and don't include shipping exceptions as they don't expect anyone from a different country to order.Checking with elctronics suppliers for shipping options to India might help too as some might offer a solution.

    View Topic »
  • Check if you can source th PI by other means like Ebay.If so then offer the gift card here for someone else to use (after they paid you).I guess Adafruit is using a standard postal service with little connection to India, so import and export costs are pushed up.Don't think they will agree on other services but might be worth a try.

    View Topic »
  • Did you consider a "selfie stick" ?You can even go overboard and add a gimbal system to keep the lamp always in the same orientation....

    View Topic »
  • Downunder35m commented on liquidhandwash's forum topic I made it1 month ago

    Too bad is only used by a few people...

    View Topic »
  • Downunder35m commented on gabon's forum topic Arduino1 month ago

    Google is your friend, same for the Arduino Playground on the official Arduino websites.Once you finnished your research you might be able to formulate your question with the required details.

    View Topic »
  • Downunder35m commented on iceng's forum topic Answers are in arears by 6 or 7 years.1 month ago

    No such problem here, might be your combo of outdated OS and browser?

    View Topic »
  • Ready to use solutions are available for years.Some based on simple IR detectors, other use radar, some fixed installation induction loops in the road.Transmitting and images can be done with a simple addon sending the data from the SD card at fixed intervals.Seems your company needs someone who knows how to use Google and contact companies supplying this tech for years ;)

    View Topic »
  • Downunder35m commented on Waldemar Sha's forum topic WHERE CAN I PATTENT THIS???1 month ago

    Is it for oral use?Is it for cleaning the grout in the tiles?Is it a sex toy???Have the design regstered first, get a good lawyer and let him write the patent stuff - it is impossible for a normal brain to think in patent ways to formulate the sentences correctly.

    View Topic »
  • Downunder35m commented on AviF3's forum topic where to buy acrylic1 month ago

    You would need a suitable sized vacuum chamber to do it really good.As you can only use quite low volumes you need to cast in stages, the next always shortly before the previous cures fully.Only extrem expensive resins cure with next to no shrinking - all normal casting resings shrink when curing!It takes a lot of know how and experience to create a big cast like yours without ruining the entire thing towards the end.Heat is also an issue in such big volumes.In this size you might have better chances with a "fish tank".Glass and water have very similar refraction properties, same for some oils and plastics.If you find the right liquid where your wall material seems to disappear when you submerge it then it will be very hard to tell that the cube is not solid.Of course it needs...see more »You would need a suitable sized vacuum chamber to do it really good.As you can only use quite low volumes you need to cast in stages, the next always shortly before the previous cures fully.Only extrem expensive resins cure with next to no shrinking - all normal casting resings shrink when curing!It takes a lot of know how and experience to create a big cast like yours without ruining the entire thing towards the end.Heat is also an issue in such big volumes.In this size you might have better chances with a "fish tank".Glass and water have very similar refraction properties, same for some oils and plastics.If you find the right liquid where your wall material seems to disappear when you submerge it then it will be very hard to tell that the cube is not solid.Of course it needs to be airtight and free of air - or the last bubbles need to be covered with rim on the top.

    View Topic »
  • You would need an ongoing connection where the flash changes a pulse, bit or similar to be fest enough.That is where RF remote options are better than Wifi as you only have to fight with the time it takes to process the signal and activate the flash.Same story for IR.Some cameras allow for a set delay for the triggering.This allows to have everything done the cam needs to do to get the perfect picture and the pulse for the external flash has a "negative" delay.So the pulse for the external flash is send out slightly before the shutter of the cam.But not sure if your cam has that option available for compensation....

    View Topic »
  • Every half decent camera allows for the connection of an addition flash.Either by top mount or by a headphone like plug.All you need is to read the datasheet or technical specs (the detailed ones) for your camera.If in doubt measure the impuls with an oscilloscope or very fast multimeter that has a lock function for the highest value recorded.From there you only need a suitable transistor for the input and a suitable remote on the other end.Options are endless from going overboard with a little arduino and WiFi or RF shield to simple with discreet components and a bit of wire.

    View Topic »
  • I would check first if you are allowed to do it.When it comes to cars most countries have quite strict rules for "homemade additions".There is a reason for it...If you can still continue check the weight of everything first.Wood can be heavier than you think, especially with hundreds of screws in it and several thick coats of varnish.A very neat way to cut the weight down and get best stability would be to make the ouside from sheets of chipboard or wood laminate, whatever is cheaper to obtain.A frame, some boiling water or steam and glue is all you need.There are several Ibles about bending wood and making furniture, check a few ;)

    No sarcasm here...The fact is that in most modern countries anything you add to your car must comply with certain design criteria and be legal to use in terms of being safe in an accident.Let's face it: The last thing you want is your wooden top to desintegrate in an accident and injuring people nearby.And again without any sarcasm: The best place to ask is quite obvious:The place that gives the registration to your vehicle or the one required to inspect a used car so the ownership can be transfered for road use.Basically the same as building your own trailer from scratch.In a lot of cases a certain size does not even require own numberplates.But if it does it will be checked for compliance with road safety and structural safety.I know in certain parts of the US it does not matter what ...see more »No sarcasm here...The fact is that in most modern countries anything you add to your car must comply with certain design criteria and be legal to use in terms of being safe in an accident.Let's face it: The last thing you want is your wooden top to desintegrate in an accident and injuring people nearby.And again without any sarcasm: The best place to ask is quite obvious:The place that gives the registration to your vehicle or the one required to inspect a used car so the ownership can be transfered for road use.Basically the same as building your own trailer from scratch.In a lot of cases a certain size does not even require own numberplates.But if it does it will be checked for compliance with road safety and structural safety.I know in certain parts of the US it does not matter what you do to your car in terms of canopies or truck tops but that does not mean every design someone created in his backyard is actuall safe on the road.Can you imagine why they abondoned wooden exteriors for cars and most trailer ages ago?Your design might certainly look great when finnished but unless you happen to be a structural engeneer I still advise t double check the legal side first and than go for a design with as much "solid" wood as possible.Panel designs with hundreds of screws are a thing I would not want to have permanently connected to my car.

    I hope you have more luck with your searches for other parts of your project, seems Google is not yet your friend.Try this for example, includes links to Instructables as well.Not really that hard is it? ;)

    Forgot to mention:Using single sheets that are not laminated is the best option.Multilayers thicker than 3mm can be a real pain to bend.The single ones often only need a good soak in warm water to make them flexible enough to go around bends like you would have.If there is any furniture makin store near you or your hardware store is well stocked you can use something more special than birch or pine for the last layer.Or just use a nice stain if you want to stay on a budget.Make sure to create enough layers to get proper stability.8-10mm are usually sufficient unless you want the final piece without any internal support frames on the wood.For a clean inside look with enough strength and thickness to use proper screws I recommend going to 12 or up to 15mm.You won't get a better look than ...see more »Forgot to mention:Using single sheets that are not laminated is the best option.Multilayers thicker than 3mm can be a real pain to bend.The single ones often only need a good soak in warm water to make them flexible enough to go around bends like you would have.If there is any furniture makin store near you or your hardware store is well stocked you can use something more special than birch or pine for the last layer.Or just use a nice stain if you want to stay on a budget.Make sure to create enough layers to get proper stability.8-10mm are usually sufficient unless you want the final piece without any internal support frames on the wood.For a clean inside look with enough strength and thickness to use proper screws I recommend going to 12 or up to 15mm.You won't get a better look than something that looks like one solid piece of wood ;)If you get big enough sheets you can even cut the door walls so they would would match the grain of the last sheet used for the outside - makes it look like you carved it out of wood (if you are no expert).

    View Topic »
  • Downunder35m commented on jarcher12's forum topic WImeo is censored in Indonesia1 month ago

    If your internet speed is half decent you can try a free VPN service but from my knowledge internet is slow for most people in your region already and a free VPN makes it a bit slower again.Your country "blocks" websites by returning wrong DNS packets to you.If you are lucky then you ISP has not already blocked DNS services like Google or OpenDNS, worth a check.The last alternative I know that works for such simple censorchip is a service like DNSCrypt.Once setup it will literally encrypt all DNS traffic so your ISP is unable to see what is going on.Should also free a lot of other blocked websites for you.Use it with caution and only where and when required!Once too many people use these "backdoors" the gouvernment will notice and try to find ways to block it too.Whe...see more »If your internet speed is half decent you can try a free VPN service but from my knowledge internet is slow for most people in your region already and a free VPN makes it a bit slower again.Your country "blocks" websites by returning wrong DNS packets to you.If you are lucky then you ISP has not already blocked DNS services like Google or OpenDNS, worth a check.The last alternative I know that works for such simple censorchip is a service like DNSCrypt.Once setup it will literally encrypt all DNS traffic so your ISP is unable to see what is going on.Should also free a lot of other blocked websites for you.Use it with caution and only where and when required!Once too many people use these "backdoors" the gouvernment will notice and try to find ways to block it too.When that happens your only way out is a paid VPN server to get the data you need.Question is if you are willing (able) to spent money on such services and if you have enough use for it to justify the costs.

    View Topic »
  • PWM control and good filters...

    View Topic »
  • You can get broom stick or handles for a squeegee that extent, same for replacement tend poles.It is basically just a screw collar that pulls a bock itght into the pipe to lock it.Should be simple enough to either modify this or to get some checp handles to cut to the length you need.Squeegee heads for these system also come with a "swivel", only goes sideway though.Check your favourite hardware store and visist their cleaning section.If in doubt do the same for some cheap dollar shops as well ;)

    View Topic »
  • Downunder35m commented on cyberogre's forum topic Instructables App1 month ago

    Just a bit down the page where your posting appeared is all explained.Hint: Retirement

    View Topic »
  • More Activities