![]() ![]() That said, I tried to put everything inside the structure. One of the goals I set for myself was to have an object without a lot of files coming out, transformers or external drivers, but with only the 220 V wire coming out. The power supply supplies power to the CNC shield at Nema 17° and (via a voltage reducer with USB output) to the Raspberry and the servomotor.Īrduino is powered directly from the Raspberry via a usb cable and to simplify some things I have installed the Arduino IDE on Raspberry so I can make the sketch on the fly directly from the Raspberry desktop interface even remotely via VNC. In addition to these basic components there is a 12 Volt power supply, a voltage reducer, a relay some electric cable. Raspberry is the main heart because it manages all the operations and the input and output signals, Arduino manages the current flowing into the motors and actuates a servo to move the pen and the eraser, the CNC shield aboard the Pololu drivers A4988 they operate the Nema 17. The electronic components I adopted are mainly a Raspberry Pi 3, an Arduino Uno and a CNC Shield. Just to make the idea the head I had to reprint 5 times and still is not the optimal situation (but it does its duty). In addition to this I found myself having to remodel some pieces because once printed they did not fit well or just forgot something (a hole, a pin, etc.) I realized that designing a prototype involves having to rework and review every single piece and re-adapt it because it works as it should, so you have to be ready to put everything into play if you encounter obstacles or obstacles. This trick forced me to modify all 3D piece measurements with the consequent loss of time. I solved the question by printing before the sample pieces and measuring the final size, then by making proportions I obtained a shrinkage percentage. When do the pieces shrink? boh! I've read that the shrinkage percentage may change from the brand of filament used and even the color. The unpleasant thing is that, for example, the holes shrink and the outer parts shrink. 6 mm when printing the final measurements will never be those of the original design because the printing material (ABS in my case) tends to shrink during the cooling phase. įor example, if I have a 3D model of a 20x20x20 cube with a central hole diam. Modeling the pieces was easy and if we wanted it too fast but the thing that made me lose a bit of time was to be able to print them respecting the final measures, I try to explain better. To help you read this article I organized the contents in macro-sections: The iBoardbot project is very nice that it is based on the same principle with the difference that I am controlling the machine. I was strongly inspired by an existing project (iBoardbot). ![]() though to think about it well though an idea I would have it! I would like (but I must have the consent of my wife) to place the whiteboard in a kitchen-like place hanging from the wall and automate the printing of automated messages such as some news via the web or today's weather, the days of the day recovered from Google Calendar, a handmade design, written notes when I'm in the car and so much more. ![]() What do I need? I do not know! I do this more than that for study and research, who knows if I will ever find a use. The idea is to create a erasable whiteboard that could write and draw in real time via a web interface and therefore also from a smartphone. ![]()
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