Printrbot CNC Manuel utilisateur

Printrbot CNC Operation

Manual

Printrbot Operation Manual 1

Table of Contents

Introduction .................................................................................................................................... 2

Technical Specifications.................................................................................................................. 3

Regular Operation........................................................................................................................... 4

Software Required .......................................................................................................................... 5

Software Operation ........................................................................................................................ 6

Gcode Software....................................................................................................................... 6

Serial Port JSON Server ........................................................................................................... 6

Chillipeppr.com....................................................................................................................... 7

Software Installation Steps............................................................................................................. 8

Hardware Operation..................................................................................................................... 10

Troubleshooting............................................................................................................................ 11

Chillipeppr..................................................................................................................................... 12

Serial Port JSON .................................................................................................................... 12

NEMA 23 Stepper Motors..................................................................................................... 12

Stepper Motor Limit Switches .............................................................................................. 12

TinyGv9 ................................................................................................................................. 13

TinyG Motor Configuration........................................................................................................... 14

Original Settings.................................................................................................................... 14

Updated Settings *Changes Highlighted in Green*.............................................................. 14

Revision History ............................................................................................................................ 15

References .................................................................................................................................... 16

Printrbot Operation Manual 2

Introduction

The CNC router that will be used in this manual is a limited run (only 19 made) CNC created

by the now out of business company known as Printrbot. While there is a lot of information on

the internet about Printrbot and their machines, much knowledge was lost when the company

and their website were shut down. This manual is a collection of information about this

particular machine that was either found on the internet or put together during the machine’s

operation with Professor Simon Penny.

In this manual, we will discuss the Technical Specifications of the Printrbot CNC, Regular

Operation of the machine and compatible software, and various different Troubleshooting

methods that have been proven to solve issues relating to this particular machine and its

software. There will also be a Revision History page that will act as a record of all changes made

to this document. If you are interested in updating this document, please fill out a row on the

Revision History table when you have completed the necessary changes, save the updated word

document, and replace the current PDF version in the CNC folder.

Because this machine was built in such a small quantity, there may be issues that have not

been discovered or do not have a solution yet, but this manual will hopefully be able to assist in

both the operation and troubleshooting process.

Printrbot Operation Manual 3

Technical Specifications

The Printrbot CNC features the following:

Item

Quantity

NEMA 23 stepper motors

5 [1 x-axis, 2 y-axis, 2 z-axis]

TinyGv9 Board

Stepper motor Limit Switch

5 [2 x-axis, 2 y-axis, 1 z-axis]

USB 2.0 A to USB 2.0 B Cable

100-240V AC to 24V DC XP Power Adapter

Stepper Belt Drive

4 [2 x-axis, 2 y-axis]

Stepper Linear Rail

4 [2 x-axis, 2 y-axis]

Stepper Lead Screws

2 [2 z-axis]

Printrbot Operation Manual 4

Regular Operation

Printrbot Operation Manual 5

Software Required

In order to run the CNC, we will need some software downloaded first. The following is a list of

the required software:

A program to create the gcode for our part

Software to connect to the tinyg v9 board on the Printrbot (serial-port-json-server.exe)

A program to interpret the gcode (in our case, we will use a website: chillipeppr.com/tinyg)

All listed software is free to download or use and will be simple to operate once we have a basic

understanding on how each program works.

Printrbot Operation Manual 6

Software Operation

Gcode Software

Serial Port JSON Server

Now that the part is ready, we need to send it to the CNC to print. The first things that need

to be checked are that the USB cable that connects the computer to the CNC is plugged in and

the CNC is powered on. When powered on, the Printrbot CNC will temporarily power all

motors (an audible noise will come from the motors but they should not move) and the

TinyGv9 board will power on (indicated by blue and blinking red LED lights on the TinyG board

located underneath the CNC). If both of these are true, we are ready to connect to the TinyGv9

on the CNC. In the included CNC folder, open the program called serial-port-json-server.exe.

The program will then run for around 3 to 5 seconds before it has completed searching for the

connected USB cable. If the program is able to find the USB cable and connect to the TinyG

board, the following will be shown:

Printrbot Operation Manual 7

Note that the date visible on each line on the left side of the screen will match the current

calendar date and time that the program is run.

The most important lines needed in order to continue are the last two:

COM4 and COM5 indicate that the USB cable is connected and functioning properly. If these

lines are not showing, see Troubleshooting for JSON. If these lines are showing, we can proceed

to Chillipeppr. Note: Do not close JSON while operating the CNC.

Chillipeppr.com

Now that we have a gcode part and are connected to the TinyG board with JSON, we can

proceed to chillipeppr.com/tinyg

Printrbot Operation Manual 8

Software Installation Steps

Setting up Chilipeppr:

Step 1: Download the Serial Port JSON Server

Step 2: Extract the zip file and open up the folder

* We tested the latest version already (Jul 27th, 2019), but be sure the boards.txt file has the

string "tinyg" in it and that a bossac folder exists

Step 3: Run the Serial Port.exe; Be sure to allow it through your firewall

*You should see in the command line window that popped up COM# showing up; that

means your ports are available to be used!

Step 4: Go to Your Servers, and Proceed to Connect to localhost.

The TinyG board should be detected by now

Step 5: Head to Port List; Check off the TinyG G2 Board (it'll have a PNG)

Printrbot Operation Manual 9

Step 6: Drag in your gcode into the browser, and start!

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