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  • Arduino Controlled Model Moon synchronizes phase changes with actual lunar calendar

    Just a note, looks like the manufacturer changed the circuit design of the Moon in My Room consolidating the control circuits directly into the LED strip.To get mine to work, I had to snip the SMD resistors connecting to each LED, and solder wires there. Also, the LEDs are now connected to +5v line on their circuit board, so I had to connect that to +5v on the Arduino, instead of GND. I then had to invert the GPIO pin logic to get the pins to go LOW to light the LEDs. (0 = on, 1 = off)void lightLeds (int L6, int L5, int L4, int L3, int L2, int L1) {// New (2016-11) "Moon in my Room" requires reverse logic)digitalWrite (led1, 1-L1);digitalWrite (led2, 1-L2);digitalWrite (led3, 1-L3);digitalWrite (led4, 1-L4);digitalWrite (led5, 1-L5);digitalWrite (led6, 1-L6);}...but it does wo...see more »Just a note, looks like the manufacturer changed the circuit design of the Moon in My Room consolidating the control circuits directly into the LED strip.To get mine to work, I had to snip the SMD resistors connecting to each LED, and solder wires there. Also, the LEDs are now connected to +5v line on their circuit board, so I had to connect that to +5v on the Arduino, instead of GND. I then had to invert the GPIO pin logic to get the pins to go LOW to light the LEDs. (0 = on, 1 = off)void lightLeds (int L6, int L5, int L4, int L3, int L2, int L1) {// New (2016-11) "Moon in my Room" requires reverse logic)digitalWrite (led1, 1-L1);digitalWrite (led2, 1-L2);digitalWrite (led3, 1-L3);digitalWrite (led4, 1-L4);digitalWrite (led5, 1-L5);digitalWrite (led6, 1-L6);}...but it does work!

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  • Benbox with Eleks Laser Engraver (GearBest /Banggood)

    If you are following the instructable at http://www.instructables.com/id/How-To-Laser-Cutter/#step5 and step 6, and cannot install the belt, you will probably have to disassemble it from the side gantries so that you can install the belt bolts.

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  • DIY 3D Printer Kits – Woes and Wonders

    Not sure if you resolved this (sounded like you have a reversed Z axis motor, going up instead of down), but here's a video that might help for normal Z axis alignment and leveling portion of the build.

    I purchased the ANET Prusa i3 from Gearbest. At the time, they offered free air freight shipping and arrived within a week. I found the YouTube videos were great for assembling. (There are 3 videos. Be sure to locate the Anet Debugging video for final work.) Assembly was about 6 hrs over 3 days, taking my time. No significant issues with the build, but it isn't for a beginner. Watch thru the videos without actually assembling, just collecting the parts. Z axis setting and bed leveling wasn't really as difficult as I first thought. Just take time to be careful. First print (and every print since) using PLA has been fine. I use CURA software and the setup guide: http://www.grokett.com/files/3dprinter/How%20to%20...Construction Video:

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