Hi.I don't have any problems with scaling when printing it. The Design should print fine with 100% scale option. Right now I don't have a time to convert sketch up files to CAD compatible format. Thnx for your interest.
Nice job ! Your frame design is simple but effective. I really like that.
Your motor mount fits nicely and integrating terminal block to the frame is good idea. ABS is a bit harder material to play with :). Thnx for sharing your progress.
Yes it's a bit noisy :). Maybe different types of gears and tighter tolerances between gears might help to reduce sound. Can you post your result ? I really like to see your print quality and that "U clamp" you did.
I made couple changes to the shaft. Download "gearbox_shaft_v2" file and try that one. I removed some polygon lines from that problem area. Let me know if that helped.
Firts I clean all surfaces with oil and dirt cleaner. Then I add 1 layer of primer, 2 layers of surface paint and 2 layers of clear laquer. Im using acrylic spray paints.
Good point. When I designed this gearbox I actually studied servos and how the gears are arranged inside it.
yes it's press fitted. Press fit if common way to attach gear to the motor shaft (small dc motors) High friction keep it in place.
3d Printed Gearbox for Smal...View Instructable »
It's a reflecting cover for 5mm leds.http://www.partco.fi/fi/ledit/ledikehykset/2738-led-5-heijas-k.html?search_query=led&results=365
Yes it is a regular 4pin RGB led. If you take a look at the schematic you will see how its connected to the arduino.
Wooden toycraneView Instructable »
Good job Martin ! It's nice to see that people are making improvements to this guide and helping others. Open source FTW :)
I only have eagle schematics available. File name "control.sch"
Just download all *.ino files under step 8.
Thanks for tip !
The Foam is from my old tool box. Original plan was to make custom foam cutouts but my local hardware stores doesn't have that stuff.
I like to do simple joints with screws and glue. With good handsaw you can do pretty long and straight cuts too.
Mobile WorkbenchView Instructable »
HiThose numbers are pulse width in microseconds. Check link for more information.https://www.arduino.cc/en/Reference/ServoAttach
The code that I uploaded is final version. Check your connections and compare them to arduino and code.
Resistors for leds are 270 ohms and for buttons 10k pulldown resistors. I only have those drawings in original format.
aah, its 10k, but anything in k ohm range is fine.