VanGogh

thingiverse

VanGogh is a vehicle that uses 3D printing technology, Microbit microcomputer, and lots of other components like servos and stepper motors. The final product can draw together with the <a href="https://github.com/microbit-cz/pxt-vangogh-extension" target="_blank">VanGogh extension library.</a> Hence the name VanGogh (The van that paints). Also it can be used as a quick and easy demonstration of programming. # What do I need? ## Components <ul> <li><a href="./STL" target="_blank">VanGogh construction + penholder.</a></li> <li><a href="https://www.printables.com/cs/model/459596-connection-hub-for-28byj-48-stepper" target="_blank">2x Adapter 6514TT 65mm lego wheel for 28BYJ-48 5V DC stepper motor.</a></li> <li>Micro:bit board.</li> <li><a href="https://www.aliexpress.com/item/1005004959920270.html" target="_blank">Motor:bit expansion board.</a></li> <li>2x Stepper motor 28BYJ-48 5V DC.</li> <li>Micro servo 9g SG90 with a lifting arm (Usually packed with servo).</li> <li>2x 6514TT 65mm lego wheel.</li> <li>9x M3 Insert with outer diameter 5mm.</li> <li>4x M3 screw up to 6mm, 4x up to 4mm, 2x self drilling up to 6mm and 1x at least 14mm long.</li> <li>Support wheel.</li> <li>12x Lego pin 2780.</li> <li><a href="https://github.com/microbit-cz/pxt-vangogh-extension" target="_blank">VanGogh extension library.</a></li> </ul> ## Prerequisites <li>3D printer with minmal 15x15 cm printing space.</li> <li>22 meters of your favorite filament (Tested on PLA).</li> <li>Solder for easy installation of inserts.</li> Before printing, I would recommend measuring the diameter of the writing utensil you want to use (I recommend a marker) and lengthen or shorten the insert "VanGoghPenHolderInsert" accordingly. # Assembly <ol> <li>Insert the inserts with a solder into the holes provided for them (they are on the sides next to the holes for the stepper motors and 4 from the bottom on the platform for the board. One insert also belongs to the penholder, you can see in the picture)</li> <li>Together with the penholder insert the servo motor with lifting arm into the construction and screw the motor with self-drilling screws M3.</li> <li>Insert the stepper motors into the structure and screw them with longer M3 screws (up to 6mm).</li> <li>Attach the adapters to the wheels with Lego pins and then fit in the stepper motors.</li> <li>Screw the support wheel into the structure with shorter M3 screws (up to 4mm).</li> <li>Insert the Lego pins into the structure and mount the board (I recommend to squeeze the cables under the board).</li> <li>Connect the servo to the pins marked S1 <b>(brown wire to the black pin).</b></li> <li>Connect the steppers to their connectors on the same side (right stepper to the connector on the right side).</li> <li>Insert the printed insert into the penholder, insert pen and attach with the longest M3 screw (at least 14mm).</li> </ol> <p>Oringinal repo <a href="https://github.com/microbit-cz/Vangogh-painter" target="_blank">here,</a> sld files included.</p>