27th June & 1st July, 2:00PM, Making & Tinkering Lab
Shawn, Kang Hao, Xinhui
We managed to get Inkscape to work properly with the Ender3, changing the settings so that the pen goes up before moving to a new point. We also changed the origin according to the position of the tip of the pen and shifted the Z-axis clicker up to fit the height of the pen. With that, we successfully drew out the 1st perfect edition of the Mona Lisa, and we managed to scale the size of the canvas down to the size of our Rubik’s cube.
27th June, 2:00PM, Making & Tinkering Lab
Shawn
The first idea of our flipper is shown in this video. However, we tried to 3D print the object and it doesn’t work as expected.
Image 1: First Flipper Prototype
There is a slider between the pointer of the motor and the horizontal flipper as shown in Image 1. The friction of the pointer and horizontal flipper is pretty high which causes it not to work as expected in the video.
30th June, 12:00PM, Making & Tinkering Lab
Shawn, Hung
The purpose of using an electromagnet is to act as a switch to grab and release the pen.
The electromagnet we tested has an operating voltage of 5 Volts. However, we have realized that the ramp 1.4 we used was operating at 12 Volts which is way much higher than the operating voltage of the electromagnet. We tried to use the MOSFET in RAMP 1.4 by inputting PWM (pulse width modulation)) to the electromagnet, however, the 12 Volts supply might have damaged the electromagnet.
Hence, we are now trying to buy another electromagnet with an operating voltage of 12 Volts.
1st July, 3:00PM, Making & Tinkering Lab
Shawn
Another idea of the flipper is pretty straight forward by having holes on the Rubik cube holder and a motor flips through the hole to flip the Rubik cube as shown below:
Video 1: Flipper Prototype 2
Aside from that, there is a Nema Motor under the Rubik’s cube holder to have a rotation at the z-direction. We have printed out the model in video 1 shown below:
Mainly 2 problems exist in this model:
- The height of the whole model is around 12 cm tall. There is not much space left for the Ender 3 Printer to work properly
- The Rubik Cube is stuck in the Rubik Cube Holder without turning properly as shown in the video below: