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  • Plotclock DIY Robot with Arduino Uno Drawing Robot
  • Plotclock DIY Robot with Arduino Uno Drawing Robot
  • Plotclock DIY Robot with Arduino Uno Drawing Robot
  • Plotclock DIY Robot with Arduino Uno Drawing Robot

Plotclock DIY Robot with Arduino Uno Drawing Robot

Brand: LinkSprite
$36.50
SKU:
BOT_PLOTCLOCK]
Weight:
0.20 LBS
Shipping:
Calculated at checkout
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Product Description

Plot0408.jpg

Plot0409.jpg

Plot0410.jpg

Plot0411.jpg

Plot0413.jpg

Installation instructions

Plotclock1.png

Plotclock2.png

Plotclock3.png

Plotclock4.png

Plotclock5.png

Plotclock6.png

Plotclock7.png

Plotclock8.png

Plotclock9.png

Plotclock10.png

Plotclock11.png

Plotclock12.png

Plotclock13.png

Plotclock14.png

Summary

800px-plotclock (1).jpg

A clock that plots time. Designed with makeability in a fablab/makerspace/hackerspace in mind.

You need:

 

1 Arduino

3 servos

1 dry wipe pen

M3 nuts, bolts, thread tap

Update to V1.01:

added calibration routine and documentation to arduino code

see the instruction tab above for building instructions

http://wiki.fablab-nuernberg.de/w/Ding:Plotclock(german)

http://www.youtube.com/watch?v=iOLFP90DneY

https://github.com/9a/plotclock(not maintained!)

Instructions

Classical plotclock.jpg

Update 08/15: You might want to take a look at http://www.thingiverse.com/thing:931498/#instructions for a more detailed documentation

Update 10/15: You should also check out http://www.instructables.com/id/Plot-Clock-for-dummies/?ALLSTEPS Thanks to Kjetil Egeland!

Materials I used:

  • Arduino uno
  • Tower Pro 9g servos (those cheap ones from ebay)
  • WB SL DRYWIPE MARKER, bullet tip
  • A small custom servo adapter, there are shields or servo-arduinos that also can be used. You can also just use jumper wires: 5V to red servo wire, GND to brown or black servo wire and the arduino servopins connected to the yellow or orange servo wire

Building instructions:

(for version 1.01!)

1.Lasercut plotclock_beta1.pdf from 3mm material or 3D print plotclock_SUP7.skp

  • the black areas in the pdf on the servo arms should be used to engrave some material away, so the servohorns settle in

2.3D print swee.stl or reuse some other cylindrical part for the sweeper

3.Tap 2.5mm holes with M3 thread

4.Assemble arms with M3 screws, gently adjust the counternuts so that the joints under the screw heads just have enough play for smooth movement (see joint picture).

5.load Arduino sketch plotclock_V1, see code comments for further information http://playground.arduino.cc/Code/time library is needed

6.Add some sort of cloth with double sided tape to sweeper

7.Attach servos to digital pin 2, 3 and 4, according to arduino sketch, test them without anything attached by plugging in the arduino (the photos show it being connected to 1, 2 and 3, which isn't optimal since 1 is also the TX pin, so during arduino startup the lifting servo jumps around)

8.Put everything together

  • You may have to redrill the holes that are used for securing the servos, since some servo screws are a tight fit.
  • Acrylic is brittle and easily breaks wen the mounting holes are to small. Only push the servo arms onto their hubs, don't secure them with screws! For initial calibration do not mount the resting clip for the wiper (danger of collision with the pen). Glue or screw the servo arms to the acrylic parts.

9.When attaching the servo arms, make sure they can turn enough to reach every point on the drawing surface by manually turning them

10.Power the arduino, it should start a calibration cycle where every second the position of both servos changes by rotating exactly 90 degrees (see last image in gallery)

11.Change the SERVOFAKTOR, SERVOLEFTNULL and SERVORIGHTNULL values until everything matches up (see code for more information)

12.Attach the pen and the sweeper holder only after testing everything else

400px-circuit.jpg

600px-lifting.jpg

600px-m3 slot.jpg

600px-plotclock.jpg

600px-calibration.jpg

600px-erklaerung.jpg

600px-pile o prototypes.JPG

Documents

Plotclock Code.rar

Plotclock Instroduction

libraries.rar

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