homework writing machine arduino code

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Drawing Robot/Pen Plotter/Drawing Machine is an Open Hardware version of the famous machine AxiDraw which it is a pen plotter, capable of writing or drawing on almost any flat surface. It can write with pens, permanent markers, pencils, and other writing implements to handle an endless variety of applications.

Its unique design features a writing head that extends beyond the machine, making it possible to draw on objects bigger than the machine itself. The biggest advantage of the machine is that it can be placed over the book because of the core XY extending design of the machine.

This Drawing Robot/Pen Plotter/Drawing Machine is similar to the commercially available AxiDraw. It is powered by an Arduino Uno controller, uses a CNC Shield, and GRBL firmware

The cost to build the Drawing Robot is between $75 depending on where you buy your parts and whether you already own some of the parts such as the Arduino.

You can find all of my projects on https://www.diyprojectslab.com/

Maximum drawing area 24 * 30 CM.

Thank You NextPCB

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2 x Nema 17 Stepper Motors Amazon.com

2 x Linear Rod M8 x 450mm for X Axis Amazon.com

2 x Linear Rod M8 x 350mm for Y Axis Amazon.com

2 x Linear Rod 3mm for Z Axis (you can get it from old CDROM)

1 x Threaded Rod M8 x 480mm8 x LM8UU Bearings Amazon.com

1 x Servo Sg901 x Spring 5m (from ball point pen) Amazon.com

2 x GT2 Pulley, 16 teeth Amazon.com

5 x Bearing 624zz Amazon.com

1 x 2000mm GT2 belt Amazon.com

1 x Arduino Uno Amazon.com

1 x CNC Shield Amazon.com

2 x A4988 Stepper driver with heatsink Amazon.com

6 x Jumpers Amazon.com

1 x 12V 2A Power Supply Amazon.com

• 4 x 5/16in-18
• 13 x Phillips M3-0.5 x 16mm
• 4 x Phillips M3-0.5 x 6mm
• 5 x Phillips M4-0.7x 35mm
• 1 x Hex M3-0.5 x 20mm
• 4 x 5/16in washer
• 4 x M3 washers

Download the files from Thingiverse

Open the 3D models in Cura or any other slicer.

Use 75% infill on all the parts (An infill of 70 – 100% will work as well)

Printed all the parts with 0.10 – 0.20 mm layer height

Printed with PLA

Use supports on the Penholder, Slider, X_Support_L and the X_Support_R

Note: The longest part took around 10hrs and the shortest took 30 minutes to print

PLA is fine for this design. I print at 200C on BuildTak. None of the parts require rafts or brims. I suggest supports only for the pen holder and the Z axis end plate which is standing up.

Remember that you need (2) 350mm and (2) 450mm long linear rods

Take the (2) 450mm linear rods and insert them into either x-support part

• Use may need to use a round file to smooth out the holes that you insert them in
• Also, you can use a rubber mallet to help insert the rods

Now take the threaded rod and insert it in the hole below. Feed a 5/16in washer and 5/16in nut on both sides of the x-support part

Now you want to push the LM8UU bearings into their place on the top and bottom clamshell (The top and bottom clamshell take (4) bearings each)

Take (4) 624zz bearings and push them through the 3D-printed idler pulleys. Leave the 5th bearing for later when you assemble the Y-axis

Assemble the X-Axis (Carriage)

• Get (4) M3-0.5 x 20mm screws, (4) M3 nuts, (4) M3 washers and (4) 624zz bearings with the idler pulleys installed
• Take one screw and feed a washer through it, the washer will rest on the bearing. The nut will be at the bottom of the carriage, which will secure the bearing in place

Assemble the X-Axis (X-Support)

• Slide the clamshell through the 450mm (X-axis) linear rods
• Use a rubber mallet again to attach the last X-support on the linear rods
• Make sure that the rods stick out equally on both sides
• Slide the other end of the threaded rod through the hole on the X-support
• Put on the last set of nuts and washers to hold the X-support in place
• Now that the X-axis is complete, you can use (2) Phillips M3-0.5 x 16mm screws per X-support to help keep the linear rods from sliding
• Take the (2) 350mm linear rods and insert them the Y-back piece by using a rubber mallet
• Get (1) M4-0.5 x 35 screw, (1) M4 nut and the 5th 624zz bearing
• Get (2) M3-0.5 x 16 screws to secure the linear rods
• Slide in the bearing when inserting the screw through the Y-back piece
• Slide the the linear rods/Y-back piece through the LM8UU bearings and attach the Y-front piece using a rubber mallet

Step 6: Assemble the X-Y Axis (Belt)

• Use a pair of needle nose pliers to help guide the GT2 belt more easily through the clamshell
• Take the two ends of the belt and slide them through the “teeth” on the Base Slider
• The belt should be tight and not loose
• Note that once the GT2 belt is on, it is normal for the clamshell not to move easily
• Get (2) 3mm linear rods and the following 3D printed parts (Slider, Pen Holder, Base Slide, 3MM Metric Thumb Screw)
• Get (1) Hex M3-0.5 x 20mm screw and the Metric Thumb Screw and push them together. Use superglue to keep it together.
• Get (3) M3-0.5 x 16mm screws which you will use the secure the Base Slide to the Y-Front part. You may need to use (3) M3-0.5 nuts in order to hold it in place
• Push the Slider and Pen Holder together to make one piece
• Now take that new part and the (2) 3mm linear rods and slide the rods through the holes. Place a small spring in between the two parts so there is a little bit of pressure to lift the Slider. You may need to cut the spring a bit until there is an adequate amount of pressure on the slider.

ELECTRONICS

I prefer you can use Arduino uno CNC Shield

Ready to your all circuit

1) 4pcs A4988 Stepper Motor Driver

2) Expansion Board A4988 Driver

3)Arduino UNO First of all take hit sink and stick on A4988 motor Driver.

4pcs A4988 Stepper motor driver connect on expansion board A4988 driver module, then connect the arduino with expansion board and connect all wiring The shield also has a built-in micro stepping control - meaning that instead of using full steps or half steps like a large CNC would do, we can make the motors move by 1/16 or 1/32 of a step to make the laser move with the maximal precision possible. However, the motors will consume more electricity: they will get hot quicker.

To use the micro stepping modes, short some of the mode pins together. Different combinations give different resolutions. Take a look at the chart for the different configurations possible. When the shield is programmed, add the A4988 drivers to it and wire up the rest of the electronics.

To find the coils of the stepper motors, use a multimeter. If there's resistance between the two wires, you have a coil. On the schematic, the coils are represented by two wires of the same color.

Inkscape which is the graphics design software (draw or import graphics)

Inkscape MI GRBL Extension (convert graphics to G-Code)Universal G Code Sender (sends the G-Code to the robot causing drawing motion)GRBL which is the Arduino firmware (programmed into the Arduino Uno)

Arduino: https://www.arduino.cc/en/software

Universal G-code sender: https://winder.github.io/ugs_website/...

Inkscape: https://inkscape.org/release/inkscape..

4xiDraw & km laser: https://drive.google.com/file/d/1YO8-...

Processing: https://processing.org/download/

drawing to G-code processing: https://drive.google.com/file/d/1PIFx...

watch video for full setup

hookup_QLVR1z3Ob1.jpg

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• home automation

Homework Writing Machine with Arduino and Servo Motor

Homework writing machine is an auto writing machine through which you can make your your work easy by programing your project. As per the title this is a simple project using Arduino to make Homework writing machine at your home.This machine can draw any design and write any type of fonts.You can see sharpness and perfection of writing in photos. The machine uses a gantry to move the writing tip along the X and Y axes. The flexible-nib pen is mounted on a servo motor which rotates the tip onto the writing surface, taking care of the third axis.

Mechanical Kit will be shipped to you and you can learn and build using tutorials. You can start for free today!

1. 3D Printer

2. Automobile Prototyping

3. CNC Machine using Arduino

4. Project Management with Primavera

Homework writing machine project description:

• Servo Motor: A servomotor is a rotary actuator or linear actuator that allows for precise control of angular or linear position, velocity and acceleration.It consists of a suitable motor coupled to a sensor for position feedback. It also requires a relatively sophisticated controller, often a dedicated module designed specifically for use with servomotors. 1 threaded rod
• Wood: Wood is a porous and fibrous structural tissue found in the stems and roots of trees and other woody plants. It is an organic material, a natural composite of cellulose fibers that are strong in tension and embedded in a matrix of lignin that resists compression.

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• Arduno uno: Arduino is an open source computer hardware and software company, project, and user community that designs and manufactures single-board microcontrollers and microcontroller kits for building digital devices and interactive objects that can sense and control objects in the physical and digital world. The project's products are distributed as open-source hardware and software, which are licensed under the GNU Lesser General Public License (LGPL) or the GNU General Public License (GPL),permitting the manufacture of Arduino boards and software distribution by anyone. Arduino boards are available commercially in preassembled form, or as do-it-yourself (DIY) kits.
• Grbl shield: =The Arduino grblShield is a complete hardware solution for Dank's CNC motion control system called grbl. Compatible with the Uno and other 328p versions of the Arduino development platform. (Note: grbl 0.6 is not compatible with 168-based Arduinos (nor will it ever be), and currently grbl does not support the Arduino Megas).
• Driver motors : = motor driver is a little current amplifier; the function of motor drivers is to take a low-current control signal and then turn it into a higher-current signal that can drive a motor.
• 9 gram servo : = A servomotor is a rotary actuator or linear actuator that allows for precise control of angular or linear position, velocity and acceleration.[1] It consists of a suitable motor coupled to a sensor for position feedback. It also requires a relatively sophisticated controller, often a dedicated module designed specifically for use with servomotors. Benbox software

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Homework Writing Machine

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• Engineering

Make a Homemade Homework Writing Machine

Drawing Robot/Pen Plotter/Drawing Machine is an Open Hardware version of the well-known AxiDraw pen plotter.

Drawing Robot/Pen Plotter/Drawing Machine is an Open Hardware version of the well-known AxiDraw pen plotter, which can write or draw on nearly any flat surface.

It can handle a wide range of applications by writing with pens, permanent markers, pencils, and other writing utensils.

Its one-of-a-kind design includes a writing head that extends outside the machine, allowing it to draw on items that are larger than the machine.

Because of the machine’s core XY extending design, it can be put over the book, which is its major benefit.

This Drawing Robot/Pen Plotter/Drawing Machine looks a lot like the AxiDraw, which is a commercially available product.

It’s controlled by an Arduino Uno, has a CNC Shield, and runs on GRBL firmware.

The cost of building the Drawing Robot varies between $75 and $150, depending on where you buy your parts and whether you already have some, such as the Arduino.

24 * 30 cm is the maximum sketching area.

Step 1: Gather the necessary parts and materials

Nema 17 stepper motors (two) 2 × M8 x 450mm Linear Rods for X Axis 2 × M8 x 350mm Linear Rods for Y Axis 2 x 3mm Linear Rods for the Z Axis (you can get it from old CDROM) 1 × Threaded Rod M8 x 480mm8 x LM8UU Bearings 1 x Sg901 x Spring 5m Servo (from ball point pen) 2 x GT2 Pulley, 16 teeth Bearing 624zz (Set of 5) 1 × 2000mm GT2 belt 1 × Arduino Uno 1 x CNC Shield 2 x A4988 stepper drivers, each with its own heatsink 6 x Jumpers 1 × 12V 2A Power Supply

M3-0.5 x M4-0.7 x M3-0.5 x M4-0.7 x M3-0.5 x M4-0.7 18 x 4 x 5/16in

Amazon\sScrews

13 × M3-0.5 x 16mm Phillips 4 pcs M3-0.5 x 6mm Phillips 5 pcs M4-0.7x 35mm Phillips 1 × M3-0.5 x 20mm Hex Washers washer, 4 x 5/16in M3 washers (four)

Step 2: 3D Printing

Thingiverse is where you can get the files.

Cura or another slicer may be used to open the 3D models.

Use a 75 percent infill on all portions (a 70 to 100 percent infill would suffice).

All pieces were printed with a layer height of 0.10–0.20 mm.

PLA was used to print this.

Use the Penholder, Slider, X Support L, and X Support R as supports.

Note: The longest component took around 10 hours to print, while the shortest took only 30 minutes.

PLA is suitable for this project.

On BuildTak, I print at 200°C.

There are no rafts or brims required for any of the sections.

Only the pen holder and the upright Z axis end plate should be supported, in my opinion.

Step 3: Put the X-Axis together

Keep in mind that you’ll need two 350mm and two 450mm linear rods.

Insert the (2) 450mm linear rods into one of the x-support parts.

You may need to smooth up the holes with a round file before inserting the rods. You may also use a rubber mallet to assist insert the rods.

The threaded rod should now be inserted into the hole below.

On both sides of the x-support section, feed a 5/16in washer and 5/16in nut.

Step 4: Put the X-Axis Bearing Together

Slide the clamshell through the 450mm linear rods (X-axis).

Attach the final X-support on the linear rods with a rubber mallet once again.

Make sure the rods are evenly spaced on both sides.

Thread the opposite end of the threaded rod through the X-hole. support’s To keep the X-support in place, add the last set of nuts and washers.

You may now add (2) Phillips M3-0.5 x 16mm screws per X-support to assist keep the linear rods from slipping now that the X-axis is complete.

Now you must push the LM8UU bearings into their proper positions on the top and bottom clamshells (each clamshell requires four bearings).

Push four 624zz bearings through the idler pulleys that were 3D-printed. When assembling the Y-axis, save the fifth bearing for later.

Construct the X-Axis (Carriage)

With the idler pulleys fitted, get (4) M3-0.5 x 20mm screws, (4) M3 nuts, (4) M3 washers, and (4) 624zz bearings.

Feed a washer through one screw; the washer will rest on the bearing.

The bearing will be secured in place by a nut at the bottom of the carriage.

You may now use (2) Phillips M3-0.5 x 16mm screws to complete the X-axis.

each X-support, screws to protect the linear rods from slipping

Step 5: Put the Y-Axis together

Using a rubber mallet, insert the (2) 350mm linear rods into the Y-back piece.

Obtain one M4-0.5 x 35 screw, one M4 nut, and the fifth 624zz bearing.

To fasten the linear rods, get two M3-0.5 x 16 screws.

When screwing the Y-back piece together, slide the bearing in.

Slide the linear rods/Y-back piece through the LM8UU bearings and use a rubber mallet to secure the Y-front piece.

Step 6: Put the X-Y Axis Together (Belt)

To make it easier to guide the GT2 belt through the clamshell, use a set of needle nose pliers.

Take the two ends of the belt and thread them through the Base Slider’s “teeth.”

The belt should be snug, not slack.

It is common for the clamshell to not move freely after the GT2 belt is installed.

Step 7: Put the Z-Axis together.

2 3mm linear rods and the 3D printed items listed below (Slider, Pen Holder, Base Slide, 3MM Metric Thumb Screw)

Take one Hex M3-0.5 x 20mm screw and one Metric Thumb Screw and combine them.

To hold things together, use superglue.

You’ll need three M3-0.5 x 16mm screws to fasten the Base Slide to the Y-Front portion.

To keep it in place, you might need to use three M3-0.5 nuts.

To make one piece, push the Slider and Pen Holder together.

Step 8: ELECTRONICS

ELECTRONICS

I recommend that you utilise the Arduino uno CNC Shield.

Prepared for your whole circuit

1) A4988 Stepper Motor Driver, 4 pcs 2) A4988 Expansion Board Driver 3)Arduino UNO (Arduino Uno)

To begin, take the hit sink and place it on the A4988 motor driver.

Attach four A4988 stepper motor drivers to the A4988 driver module on the extension board, then connect the arduino to the expansion board and connect all wire.

The shield also includes built-in micro stepping control, which means that instead of utilising full or half steps like a huge CNC, we can have the motors move by 1/16 or 1/32 of a step to move the laser with the greatest accuracy.

The motors, on the other hand, will use more electricity and become hotter more quickly.

Short several of the mode pins together to use the micro stepping modes.

Various combinations result in various resolutions.

Take a look at the diagram to see the many combinations that are available.

After the shield has been configured, connect the A4988 drivers and the rest of the electronics.

Use a multimeter to locate the stepper motor coils.

You have a coil if there is resistance between the two wires.

The coils are represented on the diagram by two wires of the same colour.

Step 9: APPLICATION SOFTWARE

Inkscape is a graphics design software programme (draw or import graphics)

MI GRBL Extension for Inkscape (convert graphics to G-Code)

G Code Sender (Universal) (sends the G-Code to the robot causing drawing motion)

The Arduino firmware is GRBL (programmed into the Arduino Uno)

Be Confident, Have Positive Gesture, Convincing Body Language, Disciplined Actions, Dedicated Approach, Be Determined, Be Transparent KP

“Update your mindset with time to improve your growth and business, Have a timely pivot” – KP

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Ik was op zoek naar dit project van lange tijd, ik ben je echt dankbaar heel erg bedankt 🙂

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• Artificial Intelligence
• Data Science
• Ethical Hacking

Writing Machine

This machine write any sentence or image, provided by ben box software..

Sep 4, 2018

18656 views

Components and supplies

Servos (Tower Pro MG996R)

Arduino UNO

Stepper motor driver board A4988

Project description

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Arduino CNC writing machine with a pen and a DVD player

alessandrokonrad/Arduino-writing-machine

Folders and files.

Repository files navigation

Arduino writing machine.

The following project is a CNC machine with a polar coordinate system build on an Arduino.

• Arduino UNO R3 - The Most Complete Starter Kit
• 1 DVD - Player
• H-Bridge (with L293D: https://lastminuteengineers.com/stepper-motor-l293d-arduino-tutorial/ )
• Tape and some screws

How it works

I am using the stepper motor and the servo motor of the Arduino Kit and the stepper motor of the DVD player. The DVD stepper motor controls the radius and the the Arduino stepper motor the angle (polar coordinates). On the DVD stepper I put some piece of wood, which I attached the servo motor and the pen on. The steppers and the servo are controled by some Arduino libraries. On top of these libraries I built my own functions in order to use the system properly.

print(String string, int font_size) -> takes a string of only uppercase letters, which I had to define by myself (see code); it automatically jumps into the next line, if written text >= 2 PI - some threshold

movePos(int radius, int angle) -> moves position relative to its currentPos

moveAt(int radius, int angle) -> moves absolute to the position

draw(int radius, int angle) -> draws and moves position relative to its currentPos

drawAt(int radius, int angle) -> draws and moves absolute to the position

getDifference(int radius, int angle, String direction) -> updates x_diff and y_diff by the difference of the currentPos, targetPos and the direction, so either clockwise or counter clockwise

isRotated() -> checks if angle >= 2 PI

DIY CNC Writing Machine Using GRBL

Introduction: DIY CNC Writing Machine Using GRBL

In this project, I will show you how to easily build your own low-cost Arduino CNC Plotter Using Free and Open-Source Software!

I’ve come across a lot of tutorials explaining how to build your own CNC plotter, but not a single one that explains in detail about all the details and software required to make it happen. I had to cross-refer with a hell lot of tutorials to make this project happen. Everything including the details of the software used are mentioned in this tutorial. Thus, I wanted to share this with the society for anyone who wishes to create this Project.

Step 1: WHAT YOU’LL NEED

• Nema 17 Stepper Motor (4-Wire) x 2
• Arduino Uno R3
• CNC Shield V3 For Arduino Uno
• A4988 Stepper Motor Driver x 2
• Threaded Rods x 2 (Sized according to your needs)
• Plain Aluminium Rods x 2
• 5mm Acrylic sheet
• CNC Milling/Laser Cutter/3D Printer
• Micro Servo

Step 2: BASIC OVERVIEW

The heart of this machine is the Arduino working

with the CNC Shield and the Stepper Motors. The stepper motors are used to actuate the X and Y axes. Two gantries each consisting of one stepper motor is made and constructed using acrylic. Each axis is controlled separately by the Arduino running the GRBL Firmware which is free and open-source. The pen attached on the Z-Axis is controlled using a servo.

Step 3: MAKING THE FRAME

Download the given Illustrator file and use your respective Mill/LaserCutter/3D Printer to make the pieces for the frame. Also cut out the supports for the Stepper motor.

Attachments

Step 4: creating the adapter for the motor.

I 3D modeled the adapter for the model in Fusion 360 according to the dimensions of my rod and motor shaft. The stl and fusion files are linked down below. It can also be found on my TinkerCAD profile. Download the files and 3D print the Adapter.

Click here for the TinkerCAD file.

Step 5: ASSEMBLING THE GANTRIES

• Assemble the CNC’d Acrylic pieces to match the shown image by mounting the vertical motor and rod supports as shown in the picture. Similarly, assemble the Y gantry using the acrylic pieces.

Step 6: MOUNTING THE GANTRIES ON TOP OF EACH OTHER

Slide-in nuts on both the threaded rods and the plain rods and fix them in place. Glue a piece of acrylic spaning over both the rods.

Glue the Y axis gantry to this piece of acrylic,

Step 7: MAKING THE PEN HOLDER

CNC out the required parts and put them together to form the mechanism shown in the images. Attach the Servo in the given spot using glue.

Step 8: WIRING THE MACHINE

Connect the male jumpers in between the Driver holders to enable micro-stepping.

connect the rest of the parts as mentioned in the wiring diagram.

Power the parts using a 12v supply

Step 9: REFER THE VIDEO BY CREATTIVE BUZZ FOR CLEARER DETAILS ON THE MECHANICAL CONSTRUCTION

I've done my Mechanical construction all in reference to this video, all credits to the owner.

Step 10: SOFTWARE

Step 11: flashing grbl to the arduino.

The main Software running on the Arduino that controls the Motors is GRBL. TO flash it :

• Download the Given Library
• Add the Library to Arduino IDE
• Under MIGRBL
• open grblupload
• Upload the sketch to your arduino.

Step 12: INKSCAPE FOR SENDING THE GCODE

Download Inkscape Version 0.47 from here . and install it.

Step 13: DOWNLOADING AND ADDING THE GRBL EXTENTION TO INKSCAPE

Download the below-given files

Refer to this video for details on how to install the extension in Inkscape.

Step 14: UNIVERSAL G CODE SENDER

Download the Universal G Code sender and unzip it.

FROM HERE .

Step 15: CALIBRATING THE STEPS PER MM FOR G CODE SENDER

Open the G-Code Sender aplication.

• Connect the Arduino to the Computer
• Select the right communication port
• Hit Open to establish a connection with the arduino.
• Enter Machine Control Mode
• Make sure your machine runs in the right directions using the x y motions.
• give each axis a motion of 1 inch and measure the actual distance travelle
• Move to Command tab
• note down values of $100 and $101 for steps per mm of x and y axis respectively.
• Use “$100 =” to adjust the steps per mm on the x axis and “$101 = ” for the y axis respectively.
• Repeat this untill the distance travelled is exactly equal to the command given.

Step 16: Creating the GCODE FILE

• Open Inkscape
• Import the desired image and convert it to path
• In Extensions, Use the MI GRBL EXTENSION.
• Press apply and create the GCODE FILE.
• Open File mode in GCODE Sender
• choose the file

SIT BACK AND LET THE MACHINE DRAW.