Hi, I've ordered a board from tindie, but I'm also keen to play around with the board itself.

I can see you've uploaded the schematic, but is it possible to also upload the board file as well?

Thanks for making this!

Hi @phil-barrett
I am curious about what "magjack" really is, and is it compulsory requirement for ethernet connection on teensy4.1? I am designing my custom PCB for grblHAL. Can I use regular shielded RJ45 pcb connectors?
I plan to use RJ45 mounted on PCB with tracks instead of using that popular kit with flat cable.

the build I am using is grblHAL_T41 5X qei SDCard Keypad
I am having homing issues.

when I home individual axis I am getting small movement and then alarm.
my switch is a NC

Phil, have you personally tested the breakout board with a YL620 or other similar spindles by Huanyang. Or made by somebody...they don't really put a name on the device or the documentation.

The spindle accepts a 0-10V input, which they typically show being used with an external potentiometer wired between their 10V output, 0-10V input, and ground.

I find that when I try to control spindle speed this way, there is a nice big ground bounce that resets the Teensy.

I already had to isolate the EN and DIR outputs with external relays, because those inputs on the YL620 are NOT logic level, it wants to sink something like 15 volts through the FWD and REV inputs to XGND. However I'm a bit grumbly at the prospect of having to isolate the 0-10V output somehow, it's a bit more difficult of a problem.

Just wondering if you or anyone else ran into this and have some tips. Future PCB modifications might include an optoisolated section for the spindle; one could easily tie grounds together if they wanted, but the spindle enable, opamp, and opamp supply regulator could all live in an isolated island. PWM will go through isolation just fine.

Hi, I couldn’t find the dimensions of the board in the repo. Specifically I’m interested in the mounting hole size and distances between the holes.

Thank you!

Hi Phil, are you able to upload the gerber files for the 2.09 revision (can only see the schematic at present)?

Alternatively, all I'm really after is the layout for the serial daughter board mounting holes, save me pulling my board out of the cabinet just to measure it.. Thanks in advance!

Hello

Not an issue per se, but a request for help.
I'm a bit of a noob when it comes to electonics/arduinos etc.

I have the breakout board which I've soldered up and am in the process of building an Openbuilds Sphinx type cnc, I would like to make use of grblHAL's auto square function and would like to use proximity sensors instead of limit switches.

I'm not entirely sure how they work but I assume that normally the limit switches just short the limit input to ground.
I have watched this youtube vid https://www.youtube.com/watch?v=F7BjZElStfQ so know how get the output of the inductive sensor to 5v. If I take the power for the inductive sensor from the same supply as the 12v input and using a suitable pulldown resistor on the sensor output, do I just connect the sensor output to the limit input, and when the sensor output goes low it triggers the limit input?

I don't want to damage the board or teensy by sticking 5v onto an input that might not be expecting it.

Great job with the board btw, really quick delivery to the UK.

TIA

Piers

I tried going through the instructions for building grblHAL for your breakout board from source and am having some difficulty as there's no main folder in grbl-HALmaster/drivers/IMXRT1062/main. Are there any updated instructions for building from source? I'm trying to build from a more recent grblHAL version as to try to get homing working on my machine. Had a few issues where I lost my zero position after unplugging my board and I think if I'm able to home I could record my WCS just in case I leave my workpiece on the machine to finish later again.

Hi,

I would like to link the T41U5XBB via direct ethernet to the computer (linuxlite based).
Do you think that's possible ?
Here it talks about an ethernet switch or hub (https://www.grbl.org/single-post/networking-the-t41u5xbb)
but would it be possible without ?
(I've tried, but networking configuration is a bit harsh on linux...)

Thanks for your replies
Best regards
Luc

Hello,
My goal is to run T41U5XBB with a servo drive. So far I run T41U5XBB with steppers and it runs perfect. The servo drives and motors that I have available are Siemens V90 and they accept signals 24v or High-speed 5 V differential pulses. I tried driving directly with Teensy firmware and T41U5XBB but I'm missing pulses. My thought is that since I have not differential pulses it would be a good idea to amplify the 5 signals to 24v since no differential signals are needed at this drives input. My question (request) is this: what is the best way to go ?
High speed optocouplers, high speed transistors ? Any suggestions are welcomed.
Lucas

Salve, ho caricato il firmware generato da web build, tutto perfetto e velocissimo. in mente persiste una domanda: mettiamo che il firmware caricato ha bisogno di una variazione per adattarsi alla macchina, genero nuovamente il firmware e lo carico ma devo cancellare quello esistente oppure la procedura è automatica? In sostanza devo formattare il teensy 4.1 prima del nuovo flash?

I think I might use this for a laser cutter I'm building, but I might want to fork and add some features down the line. What's the license for this repository? No commercial use planned.

Hello,

I have been working through the "Networking the T41U5XBB" blog post: https://www.grbl.org/single-post/networking-the-t41u5xbb. I have got to the step

"In ioSender, open the Console tab. You should see something similar to this. Note the line circled in red. That shows the IP address of the T41U5XBB."

I have run into an issue where my IP address in the console is listed as "[IP:]" (no IP address listed). I've tried poking around in the windows network settings, but I can't see anything in particular that indicates the ethernet port is not connecting. I don't really know what I am doing in this area, though, so a network setting may indeed be the issue.

Is there anything I should try to find this IP address?

Thank you for any support,
Drummond

Hello. I have purchased development board and teensy 4.1 I would like to know how to get it running for a simple test.

I have flashed the device with the simple 3axis compat hex file.

Is it possible to connect teensy 4.1 microcontroller to the PC and run the bCNC software to change some configurations? After I try to make a connection, I get an alarm state as been discussed multiple times already, and it does not allow me to call $HELP in terminal - it does not return anything. How to overcome this issue?

Do I must connect teensy to development board and short all button inputs to prevent the alarm from happening? Is there anything else I need to do?

For my application, I only use HALT, STOP and Cycle Start buttons. The other 2 ( Probe and Door) are not used. Since they are NC, do I must short them together to prevent them from causing fake alarms? Thanks in advance hoping to hear back soon.

Hello!

I'm trying to wire your breakout board and could not figure out what buttons type to buy.

I assume they should be NC momentary? Am I right? Or they should be latching - same as safety door switch?

Also, If you can point me were and how connect encoders for feed/speed override It would be great!

Thank you for your work - amazing board!

Is it possible to buy a fully assembled board, either with or without the Teensy 4.1?

If not, is it possible to have one fabbed with the available files? What is the license for the design? I'd like to replace LinuxCNC on my PrintNC build.

Thanks.

Hi,

I'm using your breakout board as both a cnc controller and sometimes switch to laser mode for etching.
The etching itself works fine, but i'm having issues with the laser constantly enabled or flashing.
for example, i have unplugged my usb and shut down external 5V power to my board. when i power it on and plug the usb in, the laser is flashing (at full power it seems so it burns a hole in my board).
if i move in the positve X direction, the laser shuts off, but when i move in the negative X direction, it goes to full power and remains on until i move it to the positive direction again.

here are my config settings:
GrblHAL 1.1f ['$' for help]
client> $$
$0=10 (Step pulse time, microseconds)
$1=255 (Step idle delay, milliseconds)
$2=0 (Step pulse invert, mask)
$3=1 (Step direction invert, mask)
$4=7 (Invert step enable pin, boolean)
$5=0 (Invert limit pins, boolean)
$6=1 (Invert probe pin, boolean)
$10=510 (Status report options, mask)
$11=0.010 (Junction deviation, millimeters)
$12=0.002 (Arc tolerance, millimeters)
$13=0 (Report in inches, boolean)
$14=14
$15=0
$16=0
$17=0
$18=0
$19=0
$20=0 (Soft limits enable, boolean)
$21=0 (Hard limits enable, boolean)
$22=0 (Homing cycle enable, boolean)
$23=0 (Homing direction invert, mask)
$24=25.000 (Homing locate feed rate, mm/min)
$25=500.000 (Homing search seek rate, mm/min)
$26=250 (Homing switch debounce delay, milliseconds)
$27=1.000 (Homing switch pull-off distance, millimeters)
$28=0.100
$29=0
$30=1000. (Maximum spindle speed, RPM)
$31=0. (Minimum spindle speed, RPM)
$32=1 (Laser-mode enable, boolean)
$33=5000.000
$34=0.000
$35=0.000
$36=100.000
$37=0
$39=1
$40=0
$41=0
$42=2
$43=1
$44=0
$45=0
$46=0
$56=5.000
$57=100.000
$58=-5.000
$59=500.000
$60=0
$61=0
$62=0
$63=3
$64=0
$65=0
$100=6400.000 (X-axis travel resolution, step/mm)
$101=6400.000 (Y-axis travel resolution, step/mm)
$102=1607.000 (Z-axis travel resolution, step/mm)
$110=750.000 (X-axis maximum rate, mm/min)
$111=550.000 (Y-axis maximum rate, mm/min)
$112=600.000 (Z-axis maximum rate, mm/min)
$120=25.000 (X-axis acceleration, mm/sec^2)
$121=25.000 (Y-axis acceleration, mm/sec^2)
$122=200.000 (Z-axis acceleration, mm/sec^2)
$130=200.000 (X-axis maximum travel, millimeters)
$131=200.000 (Y-axis maximum travel, millimeters)
$132=200.000 (Z-axis maximum travel, millimeters)
ok
Below the commands being sent. X -100 triggers the laser to be on after about -20 X +100 seems to disable the laser around the same mark.

note that if the laser is in the negative X direction, i cannot disable the laser with M5S0 (if the laser is in the positive direction i can turn it off and on)

client> $X
ok
feeder> G91
ok
feeder> G0 Y10
feeder> G90
ok
ok
feeder> G91
ok
feeder> G0 Y10
feeder> G90
ok
ok
feeder> G91
ok
feeder> G0 Y10
feeder> G90
ok
ok
feeder> G91
ok
feeder> G0 X-100
feeder> G90
ok
ok
feeder> G91
ok
feeder> G0 X100
ok
feeder> G90
ok
feeder> G1F1
ok
feeder> M3S1000
ok
feeder> M5S0
ok
feeder> G91
ok
feeder> G0 X-100
feeder> G90
ok
ok
feeder> M5S0
ok
feeder> M5S0
ok
feeder> M5S0
ok
feeder> M5S0
ok
feeder> M5S0
ok
feeder> G91
ok
feeder> G0 X100
feeder> G90

the laser is wired to the +12v and G input and the signal is connected to the PWM port on the board.
i'm running around in circles trying to figure this out, so i'm reaching out for help here.

thanks,

Stef

Using the increased planned buffer hexes that were shared on LB forums. Getting what seems to be no-so-random freezing on the controller.

terjeio/grblHAL#243
and
possibly related
terjeio/grblHAL#261

Can test anything, just not sure where to start.

Regarding T41U5XBB. v2.09
And the documentation here.
https://github.com/phil-barrett/grblHAL-teensy-4.x/blob/master/T41U5XBB%20v207.pdf
Page16

I was planning on using the USB from the Teensy so it appears I need to cut the trace.
I also plan on using the 12 relay option and the jumper is set.

I tested that there is no continuity, but the LED next to the +5V screw terminal still lights up when I plug the USB into the Teensy.
Nothing else is plugged into the board yet.
I have built two of these and they behave the same.
What could I be missing?

Salve, ho intenzione di passare da mks dlc32 esp32 a Teensy 4.1 DEV-16771 e usare grblhal...posso continuare ad usare la licenza gcode di lightburn oppure devo aggiornare la licenza?

Phil, great work on this. I know very little when it comes to this type of ports, but my realization of how cheap M4 boards have become, are leading me down the path to upgrade me co2 laser to a proper (freshly written) 32-bit port of GRBL.

First: Sorry for an issue report, I know this isn't the proper route.

Second: I am currently running GRBL-LPC for my laser, I get stuttering on high dpi, fast movements (254dpi/300mm/s). I am hoping to get some increased speeds out of my machine, as it is capable of 500mm/s (with out imploding :) )

Per Oz of the project Lightburn:

An image at 254 dpi means 0.1mm dots, or 10 dots per mm. If you run 100 mm/sec, that’s 1000 dots per second, and each dot takes a gcode instruction to produce.

Stock Smoothieware hits 800 instructions/second, or 80mm/sec with 254dpi.
8-bit GRBL is about 400, or 40mm/sec with 254 dpi

If you’re running GRBL-LPC or the new cluster Smoothieware (available on C3D’s forum) you can hit about 250mm/sec at 254 dpi.

After doing extensive research, it led me to your project, and some of the work you did with the gnea fork.

I guess, my question is, would upgrading to the teensy 4.x and the board you have produced on tindie, get me the speeds I am looking for?

Thank you!

While working on an enclosure design for the board I noticed the screw terminals spacing is not consistent. Some are more than 3.5mm apart and some are less. Also the upper left hole doesn't have enough space around it for an M3 SHCS.

Is the .brd file current or is this something which has been fixed in a later version?

Hi,

I've been using the breakout board with Ethernet and bCNC - its running very well. I currently run it on Linux with a dedicated NIC to the teensy breakout board. I used the prebuilt firmware "3 axis eth quad enc.hex"

If I trigger $$ it doesn't return any $160/$161/$162 values, so I assume backlash compensation isn't enabled in this firmware build. Is that correct?

I want to try backlash compensation - however I feel its a little out of my depth in compiling a custom firmware that matches the 3 axis eth quad enc.hex firmware and includes backlash compensation. As everything already running so well, I'm concerned there maybe some specific options enabled which I might miss if I were to compile something myself.

I need some guidance, or if someone can build me the hex that matches the "3 axis eth quad enc.hex" + backlash compensation, that would be great.

I'm getting ready to start a couple of projects (MPCNC and a mini-lathe CNC conversion). I have some questions:

1. The Tindie store just ran out of the boards. When do you expect the next batch to be available?
2. I've been reading about some of the work on grblHAL about lathe spindle sync but I'm not clear on where it currently stands. It sounds like this board will support sync through the ST0-3 inputs (index and encoder). I'm wondering if that's still the plan or do you foresee a hardware change in the future?
3. Will this board support a MPCNC auto-squaring with dual end stops? Assuming dual NC limit switches on both X and Y, can I just wire each pair in series and connect to the X and Y limit inputs? And the steppers would be connected to X/A for the X axis, and Y/B for the Y axis?
4. Does the e-stop switch connect to the Halt input? And a momentary, NO switch to the Fd//Hld input? What's the practical difference between these signals? Once halted, can the program be resumed by a momentary NO switch on the Cyc/St input in either case?
5. What's the purpose of the Probe input? Is that a switch input to trigger a probe cycle, or is that the probe input itself? If it's not the probe input itself, where does the probe input connect? On a "typical" MPCNC, probe input connected to the Z-min limit, but the limit inputs on this board don't distinguish between min and max.
6. I'm planning on someday adding a MPG, probably building it myself from buttons, an encoder, and microcontroller (perhaps a Teensy 2.x). There was some discussion of being able to connect something like that via USB to the Teensy 4.1's USB host port. Would you anticipate any problems doing that with this board? I assume there wouldn't need to be any hardware changes to the board?

Thanks for any help that can be provided. I apologize if this isn't the correct place to post questions like these.

Hello. I have previously used the grblhal firmware on the esp32 device. I was able to write $help in terminal and it would respond with all the possible settings. For example $help limits would return:

Is there such possibility with teensy 4.1 grblhal? I have flashed the teensy with 3axis compat firmware but $help does not return setting list.

Hi, does the breakout board support the inductive sensors? I am currently running some 6-30V PNP NC ones with my current arduino setup and would like to continue using them as I find them very reliable. I see you have some boards in stock on tindie and want to get one, but this is something I have not found in your documentation and I am not sure they are supported. Can they be powered by an external PSU and plugged in your board. You say the inputs are optoisolated, so I think it should be fine, can you please confirm this? Also are all 5 endstop inputs isolated?

Hai Phil....I ask permission to order boards from jlcpcb. I live in Indonesia, it seems impossible to buy at tindie considering shipping costs, thank you.

I'm looking to use the XYZ Probe Plus by OpenBuilds as a touch probe? I see they're site says it is compatible with GRBL and was looking for more information on how to wire the optional V+ input.

Spec

Wiring Docs

Should I be using an external voltage source?

Hi Phill,
I obtained Eth. kit for Teensy (MagJack) and tried with a "naked T4.1 with no success. My hex file was build from: http://svn.io-engineering.com:8080/ with tall the network options. After reading some articles I was confused and decide to ask for some help.
P.S. With ## Teensy 4.1 ethernet :: https://forum.pjrc.com/threads/59776-Ethernet-and-lwip , and an example I can see that hardware is in order and I have feedback to my serial monitor.
Your help is appreciated.
Lucas

Discussed in #51

Salve, ho provato ad aumentare il planner del pianificatore a $398=1000 e un'immagine in scala di grigi eseguita a 40000/min veniva eseguita ad una velocità maggiore (molto maggiore) rispetto a 40000/min e $398=35, ma ottengo un'immagine (in scala di grigi) molto confusa, come se il laser rimanesse acceso più a lungo e sincronizzato (impulso e passi) male. Utilizzo anche il plugin LB cluster. Con quali altri parametri potrei giocare per avere un'immagine migliore?

Does anyone know if there is any standard mapping for the use of the Aux 0, 1, & 2 relay outputs in GRBL on the breakout board?

Hello.
Could you please help me with right hex for ethernet board. My cnc has 2 motors on Y so I want to use auto square Y when homing. On a board itself I cut 2 connections and bridge other 2 based on manual for ganged Y. Tried to use "3 axis gangY eth quad enc.hex" but homing not working in this configuration at all. Now I flashed "4 axis gangY eth quad enc.hex" and homing working but looks like not squaring - homing sequence ends on Y limit switch, "A" looks like ignored.

Should I change something in HW or flash another hex?

Thank you!

I have no experience with PCB fabrication and shipping from Tindie is too expensive to my country.
Is there a way I can take these files and upload them to a service like JLCPCB.com to complete the fab and SMT assembly?

I've attempted to import the complete "4 x 100" files into EAGLE and merge it with the latest "4. 1x209" schematic with little success. I suspect some components are missing but happy to be proven wrong.

Any suggestions appreciated.

I've been fighting with this for a few weeks, and wonder if you could just make a precompiled version of the 3axis for lasers. I need the buffer changed to 1024 so I can move faster I have a 60W laser so I can move a bit faster than the LED lasers. Ive tried everything to compile, Ive used your guide but ran into the same thing as others with different/missing folders. I tried compiling using the most current Grblhal build and instructions and get an error ( no IOport.h file) but can't find where or what is even calling for it. I just need a 3 axis with homing switches (No Z tho) and the buffer set to 1024 and the 30k step limit removed.

Thanks

Hello Phil,

I have one of your Teensy boards and want to use TMC drives. have you thought about this as a project i know so many people would jump on it

"Hello in trying to use TMC drives with a Mini CNC mill. the control simply has step and dir output. I know i can run them in standalone mode but wonder if there is a project out there where an Arduino could be set up to just configure the drive and show status on a mini OLED. but the step and dir signal come from the CNC control I know 3d printer software is an all-in-one solution, but Mach3/GRBL/UCCNC/LinuxCNC/Acorn(CNC mill software) has no or little support. if there was a way to simply have a separate Arduino plug into the UART/SPI and handle the config only that would enable CNC mills to take advantage of more features such as setting stall guard and using the Diag pinout for homing switch input etc. Has this been done? If not I would be willing to pay for help to make this a reality. i Imagine a small box with OLED that can simply plug into the Uart/spi and a few menu buttons and leave the step/dir to the CNC motion controller. Some features I would like to use would be sensorless homing, spread cycle threshold, current, micro-stepping resolution. Thanks for any help and input.

I think it would work well with these holders.

https://www.amazon.com/gp/product/B08LMSYXVF/ref=ppx_yo_dt_b_asin_title_o02_s00?ie=UTF8&psc=1

There is a TMC library for Arduino already I just have zero code skills.

https://github.com/teemuatlut/TMCStepper

I came across your blog once and I thought I bookmarked it, but apparently I didn't and now I can't find my way back. I remember it has some interesting content that I want to look at again. Where can I find it? Is there a way for you to include the URL in some of your (applicable) repos?

Hey Phil
I bought a few of your boards for my CNC and pleased with the results. I also own a pair of Charmhigh pick-n-place machines and I think I saw you on one of the PnP groups. Did you ever get a pnp solution working? I was planning a reflash of the stock Charmhigh boards with a smoothie port, but the operation is irreversible. I would like instead to replace the main boards, but havnt found a working offering. Interested if you have a grblhal application for pnp.

Hi Phil,
I'm attempting to connect myT41U5XBB board to my network.
Have generated and loaded firmware as per your instructions: https://www.grbl.org/single-post/networking-the-t41u5xbb, with Ethernet/telnet/Websocket all checked, and attempted to connect to the board via the network, unfortunately unsuccessfully. As far as I can tell USB connection is working OK. (machine homes and can move with gcode)
The board is connected to the network, and the network connector led is flashing. It successfully obtains an IP address, but there is no message indicating a NETCON connection. I can ping the ip address from my Windows laptop, but am unable to open a connection using telnet from the laptop.
When starting ioSender, the program shows the message "Unable to open connection (ws://192.168.XXX.XXX:80)" showing the correct IP address.
Could you be able to either point me in the right direction or suggest any further diagnostic moves?
Thanks,
Dave.

If possible, the complete Gerber files for the V2.09 board would be appreciated.

Salve, oggi stavo facendo una lavorazione su 3 livelli colore di lightburn, 1° livello foto modalità stucki, 2° riempimento di contorni e 3° taglio. Il problema si presenta dopo aver fatto perfettamente la foto, finisce la foto e passa al riempimento. Effettua si e no 20 linee di riempimento, impostato a 8000mm/min 20% 0.08 linee per millimetro, e all'improvviso mi accorgo che il laser si muove ma non ho emissione di fascio, l'amperometro da 0-30mA segna forse 2 e nel plexiglass si vede che il riempimento non c'è. Blocco tutto, rifaccio l'homing, seleziono soltanto 2° livello-riempimento e 3° livello-taglio e porto a termine il lavoro. Utilizzo teensy4.1+T41U5XBB. Non riesco a capire da cosa può dipendere tutto questo, la macchina funzionava prima e funzionava anche dopo, è come se il controller abbassa, ma non azzera, l'uscita pwm, dopo l'homing (senza toccare altro, tipo spegnere e rieccendere ecc...) tutto funziona come prima. Anche la temperatura era nel range valido e segnava 13.4 °C

The capability of this board has motivated me to incorporate dust collection onto my machine. I added a relay to control a small shop vac and attached the relay to the TTL/SSR Relay pins labeled VAC/DC. The vacuum cycles on and off with the spindle as intended.

I then attached a switch to the Vac/DC Trigger pins and that is where my trouble begins. The vacuum does not turn on when the switch is toggled. I have done the following to find the problem.

1. Check the switch is working correctly.
2. Checked pin 1 of JP8 for 3V.
3. Checked pin 2 of JP8 to ground for 100K resistance.
4. Checked continuity between pin 2 of JP8 to IC16.

My assumption is that because spindle enable also feeds into IC16 that everything from this point on is working correctly.

Is that assumption fair?
What additional checks should I perform to trouble shoot this issue or is the problem accurately assessed to be within IC16?

Hi phil-barrett,

Just a quick question regarding the wire pairs used in the schematic for ethernet connectivity.

I noticed you are using pairs 2 (Green) & 4 (Brown) but I suspect it should be pairs 2 (Green) & 3 (Orange).

This is based on T-568a.

Cheers
George

Hey,
Are you planning on making the eagle files opensource for version 2.09 too?