Continue to write time on the whiteboard with a marker "Whiteboard Clock"

Writing it is erased, erasing is continuously writing and writing a clock on the white board endlessly "Whiteboard Clock"is.

Whiteboard Clock
https://docs.google.com/document/u/2/d/197pwFltWL2HPnOAmC840sPHhjxqxiOnNVOuI_dnLLb4/pub

The movie which roughly understands how to move by just looking at the figure is here. It shows quite a tasteful movement.

Whiteboard Clock - YouTube


The currently displayed time is 13:50. It's time to rewrite to the next time soon. The two arms are designed to expand and contract with the same mechanism as the marker hand, with markers for whiteboards and whiteboard erasers attached to yellow parts attached at the tip.


The two arms move and tight, first it takes time to erase the original time.


The original character has been erased completely. There is something like eraser on the far right side, but this swing does not look blissfully here.


The marker is pulled out as "spot" from the whiteboard erase, and the number is written. The situation is a movement full of "handwriting" why while it is a machine.


Entering the last one letter ...


Return to the home position, put the "spot" and marker in the cap to the standby state so that the tip does not dry. It is as rough as a person wrote, but is it that machines have only two "5" shaped like surprisingly the same shape?


Although it is "Whiteboard Clock" which showed quite interesting movement, it is surprisingly handy to create it. Two red arms are finely controlled with a servo motor. The third servo motor is also used for the yellow foundation part in order to lift the arm up and down and remove the marker from the cap.


Both the red arm part and the yellow base part are original products outputted by 3D printers.


"Well, it's fashionable for controlArduinoIt is predicted that it is being used ", but in reality it has been used for microcomputers that have been used for a long timePIC(Pick) is used and the chip used isPIC 16 F 1454And that. PIC has the merit that it is easier to compact the whole system compactly. Black wire is an antenna for wirelessly receiving control signals.


And a transmitter which is pasted in a casual way on the TV. I transmit a signal with a radio wave of 433 MHz and it seems that PIC 16F 1454 is also used for a chip here.


Maurice Bos who created this Whiteboard Clock.GitHub repositoryMany different codes are released.


The font of characters to be written is actually original. The lines of letters are controlled by coordinates like this.


This pageNow, communication protocols etc. are described in detail, so interested people may be interesting.