Category: Hardware


I recently got ahold of one of these NEJE DK-8-KZ 1000mW Laser engravers and have been spending the weekend playing with it.

I haven’t got it to cut paper yet (haven’t got any spare paper) but have been engraving thin plywood.

While the working area is 36x36mm a resolution of 512x512mm it is still a lot of space to work on.

Being that it also runs on 5v means that once an image is uploaded to it, the laptop can be unplugged and the engraver run from a duel output phone charger (I have it running on an Anker)

the only slight issue a lot of people are getting is that it requires an un-signed driver and both Windows and OSX have trouble with it. This is down to the fact that it uses a CH340 USB to serial interface, which are becoming more common with Chinese “Knock-off” electronics.

Signed drivers do exist and a search of the internet will show them and they work well on OSX 10.11.06 (El Capitain). I haven’t upgraded to sierra yet even though it’s been out for ages so can’t say if it works on that.

While the software is a little simple, it means that a child of 12 years old can understand it. (yes I have tested a 12-year-old child with it!)

I have tested it with text and have been able to produce clear text readable at 2-3mm high.

This isn’t a full review and it needs a few mods to make it safe (the included glasses work but are rubbish) to make it safer for people who would like to watch it.

Well that is all I have for now as I have a few items to review and a few recycled tools to design for others to try and build.

So long for now.

 

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So after nearly a year of not being used due to magic smoke and melted parts, my Ooznest Prusa I3 is alive again and reproducing.

After a problem with a tensioner braking and a real of ABS refusing to stick, I have now started printing new part for both the printer and my own custom Pi3 printer.

I have a list of parts I need to print for the printer and there is something else I should be printing to repair something in the house but I can’t remember what.

I’m sure it will come to me at some point.

I have been looking around for a new headunit for my car and not been able to find one that does what I need. Having Raspberry Pi’s and a Prusa i3 printer sitting around, I thought it should try building one.

For this I am using  Raspberry pi2 (yeh, old hat now) and a 7″ Waveshare touchscreen with 1024×600 resolution.

After 2 days of updates I have just found out that my distro is out of date!

Oh well time to upgrade.

Well, after 4 failed attempts to clone the old OSX HDD to the new 1TB seagate SSHD I finally got it to work using OSX‘s built in Disk Utility.

In the end user theratter gave me the answer

Clone El Capitan to a New Disk

  1. Restart the computer. Immediately after the chime hold down the Command–R keys until the Apple logo and progress bar appear.

  2. When the Utility Menu appears select Disk Utility and click on the Continue button.

  3. When Disk Utility loads select the disk (usually, the out-dented entry) from the side list.

  4. Click on the Partition tab in Disk Utility‘s main window. A panel will drop down.

  5. Set the partition scheme to GUID.

  6. Set the Format type to Mac OS Extended (Journaled.)

  7. Click on the Apply button, then click on the Done button when it activates.

  8. Select the new Seagate drive then select Restore from the Disk Utility’s Edit menu.

  9. From the dropdown menu select the volume you want to clone.

  10. Click on the Apply button to start the process.

 

After some struggle to remove the old drive the new drive works and after resetting the PRAM, the MackBooPro now boots super fast.

Thank you forum member theratter

So for 3 nights I have attempted to clone my old 512 GB hd to a new 1TB Seagate SSHD hybrid drive and for 3 night I have failed. I keep finding that it randomly disconnects with the “Drive incorrectly removed” message from OSX.

I have deactivated all the autolog out/shutdown setting but still getting this issue and its driving me crazy.

My 2011 IX35 didn’t have the reverse camera or dvd head unit. These things are wonderful when there are small cars around. Because I was missing the dvd navigator head unit needed for the cameras display I needed another option.

I ordered this kit for ebay seller Bostrala (recomended by a few Hyundai owners) Reverse camera and monitor

This kit is the easiest way to install a reverse camera. consisting of a camera, transmitter, receiver and monitor for only £32, this is cheep.

Once the kit arrived I set about attacking my car, this turned out to be a simple affair. All I needed for this was

  • Screwdriver (flathead)
  • Crimp tool,
  • Draw Tape
  • Side cutters
  • Knife
  • Insulation Tape,
  • Red crimp ferrels

All I did was pop the tail gate trim pannel, and popped out the existing number plate lights (both sides). I then removed the fitting from the bulb mount and pushed the cable through to the second light before pushing the new module into the slot.

Pull out the rubber gland and cut a slot. push the cameras wiring through the gland and wrap in tape. replace gland and second numberplate light. Now find somewhere to secure the transmitter and wrap in tape. Connect the transmitter and camera together and run the power lead over to the tailgates lights. On the UK model IX35 the drivers side rear/reverse light has 3 wires (Black, yellow and red) the red goes to the reverse light and the yellow to the rear light. Cut and crimp the transmitter to the black and red, tape up the excess wire and check the wiring works by popping the car into reverse (someone will need to look at the transmitter to see if the blue led lights up. Once that works it time for the receiver and monitor. I am intending to get the dvd navigator headunit at some point so only made a temp adapter for the aux socket (ciggy lighter for the smokers)I connected the monitor and transmitter leads together, ran them down between the Headunit and passenger air vent.

Once everything was connected together and working (YAY!) i replaced the tailgate trim and with some effort (you need to push down the trim while pushing it towards the wind screen) put centre console top cover back.

SMreversecamera1 smreversecamera2

ESP8266 -12 NOT beginner friendly

I brought this model because I wanted more GPIO’s and couldn’t find the 12a or 13 version. Man I wish I had ordered the -1 model first as this model is a pain in the ass to get working.
Using the provided wiring diagram and the arduino ide, I get the sync warnings and then the ide freezes during the upload stage (uploading stays in the progress bar!)

Have ordered a -1 model and will try playing with that before going back to the -12.

Printer broke again!

Smheaterbroke1 Smheaterbroke2

Yup hot end cables snagged on the object being printed and snapped the heater.

After all the hassle and grief the printer is now back up and running with the new hot end and 0.3mm nozzle.

Still a lot to learn concerning the way the setting work but at least I can print again.

Well after a week where I nearly smashed it, the printer is up and running in a fashion. I haven’t calibrated the extruder steps as I’m having issue with the Bulldog lite Clicking when pushing filament through.

Thank you to the community to have given there help and support and to Ryan @ Ooznest for giving technical support and preventing me from braking it.

I may give up on converting this to duel and may use the parts instead to build a second.

Anyone know if I will have issues using the Arduino Mega 2560 adk instead of the mega 2560 as the heart of the new printer?